Taking Great TPLO Radiographs
TPLO
X min read
Owners
Learn how to take great TPLO radiographs with proper positioning, imaging tips, & techniques. Watch videos to improve accuracy for better surgical planning
This article is for informational purposes only and is not a substitute for professional veterinary advice. Every case is unique, so always consult your veterinarian for guidance specific to your pet.
This content is intended for veterinary professionals for educational purposes. It does not replace clinical judgment or tailored advice. Always rely on your training, expertise, and the specific context of your patients.

High-quality radiographs are the foundation of TPLO planning and post-operative assessment. The tibial plateau angle (TPA) measurement that determines plate size, osteotomy arc, and rotation amount depends entirely on image quality.
A poorly positioned radiograph produces inaccurate TPA measurements, which can lead to undercorrection, overcorrection, or incorrect implant selection.
Understanding what makes a TPLO radiograph diagnostically reliable is essential for any veterinary professional involved in TPLO cases.
Quick answer: A diagnostic TPLO lateral radiograph requires: stifle and hock at approximately 90 degrees; tibia and fibula superimposed throughout; femoral condyles superimposed; the entire tibia visible; and the beam centered over the stifle. Femoral condyle non-superimposition is the most common cause of TPA measurement error.
Key takeaways
- Limb positioning is the single most important variable for TPA accuracy: limb positioning affects the appearance of anatomic landmarks used for TPA determination
- The femoral condyles must be superimposed on the lateral view: MDPI research confirms 3 mm non-superimposition produces 90.6% of measurements within 1 degree of true TPA; error increases substantially beyond 3 mm
- The stifle and hock should both be at approximately 90 degrees for the lateral view: this is required for accurate tibial plateau angle measurement
- Sedation is recommended: a sedated dog allows accurate limb placement without motion artifact; an unsedated dog in pain cannot maintain the required positioning
- The TPA averages 23 to 29 degrees in most dogs: some small breeds average higher; dogs with TPA over 30 degrees may be poor candidates for extracapsular repair or TTA
- Post-operative TPA target is 5 to 6.5 degrees: achieving this angle eliminates cranial tibial thrust; post-operative radiographs confirm whether the target was achieved
Why radiograph quality matters for TPLO
TPLO planning is based entirely on the pre-operative lateral stifle radiograph. From this image, the surgeon:
- Measures the TPA (tibial plateau angle)
- Selects the appropriate osteotomy saw blade radius
- Plans the rotation amount needed to achieve the target post-operative TPA (5 to 6.5 degrees)
- Selects the implant size (plate and screw dimensions)
A 2-degree error in TPA measurement from a poorly positioned radiograph can result in a plate one size too small or large, or an osteotomy rotation that undercorrects or overcorrects the joint.
Today's Veterinary Practice confirms: a well-positioned lateral stifle radiograph is essential for accurate diagnostic interpretation and TPA measurement; correct tibial alignment is most important for TPA measurement.
The lateral (mediolateral) projection
This is the critical image for TPA measurement.
Patient positioning
Body position: the dog is placed in lateral recumbency with the limb of interest (affected stifle) closest to the table. The limb is extended slightly away from the body.
Stifle angle: the stifle is positioned at approximately 90 degrees of flexion.
Hock angle: the hock (tarsus) is positioned at approximately 90 degrees of flexion.
Cave Vet Specialists confirms: ensure the stifle and hock are collimated into the area of interest; keep the leg in a natural position; place an appropriate-sized plate under the limb.
Femoral condyles: both femoral hemicondyles should be precisely superimposed. This is the most technically demanding aspect of lateral stifle radiography. To achieve superimposition, the opposite limb is elevated with foam wedges or a triangular positioning aid to allow the limb of interest to lie flat and parallel to the table.
Cave Vet Specialists confirms: place the non-interest limb onto wedges to tilt the limb of interest centrally; place a triangular wedge or sandbag on the opposite side.
Tibia-fibula superimposition: the tibia and fibula should be superimposed throughout their full length. If the tibia and fibula are not superimposed, the tibia is rotated relative to the plate -- and this same rotation is captured in the TPA measurement.
What to include
The radiograph must include the entire tibia from the tibial plateau (top) to at least the distal metaphysis (ideally the entire bone).
Today's Veterinary Practice confirms: the x-ray beam should be centered over the stifle joint with collimation to include the entire tibia.
The most common positioning errors
Femoral condyle non-superimposition: the most frequent and most impactful error. Caused by the hindquarters tilting, the contralateral limb not elevated sufficiently, or the dog being unsedated and shifting position.
The MDPI Animals research quantified the impact: 3 mm of non-superimposition produces about 1 degree of TPA error; errors increase substantially beyond 3 mm.
Tibial rotation: the tibia is internally or externally rotated relative to the true mediolateral plane. This occurs when the hock is not held in a natural position. Rotation changes the apparent slope of the tibial plateau and produces a falsely high or low TPA.
Today's Veterinary Practice confirms: the tibia can easily be rotated with CCL injury even when the femur appears straight.
Incomplete tibia: if the distal tibia is cut off by collimation, the surgeon cannot assess the full tibial axis -- which is required for TPA measurement.
The caudocranial (CrCd or AP) projection
The caudocranial view assesses limb alignment, varus and valgus deformity, and tibial torsion. It is a standard part of the pre-operative TPLO radiograph set.
Patient positioning
The dog is placed in sternal recumbency or dorsal recumbency with the affected limb extended caudally (toward the x-ray plate). The stifle and hock should be visible.
Rita Leibinger confirms: the AP projection must have the stifle and tarsus included for the attending surgeon to assess limb alignment.
DVM360 confirms: on the caudocranial view, the medial margin of the tuber calcis should align with the center of the distal tibia, confirming the absence of tibial torsion.
Calibration for surgical planning
When radiographs will be used for surgical planning (plate size selection), a calibration marker must be placed at the same level as the stifle joint.
This allows the surgeon to scale the digital image to real-world measurements.
Rita Leibinger confirms: image calibration does not alter TPA measurement (the angle is size-independent), but it enables radiographs to be used for surgical plate-size planning.
Post-operative radiographs
After TPLO, radiographs are taken:
- Immediately post-surgery: to confirm osteotomy position, plate position, screw placement, and achieved post-operative TPA
- At 6 to 8 weeks: to assess early bone healing and callus formation
- At 12 weeks: to confirm bone union before lifting activity restrictions
What a good post-operative radiograph shows
- Post-operative TPA of approximately 5 to 6.5 degrees
- No screws violating the joint space
- Plate in correct medial position on the tibia
- Osteotomy gap that is progressively narrowing on follow-up films (callus formation)
Warning signs on post-operative radiographs
- Screw tip in the joint space (requires removal of that screw)
- Plate migration from original position
- Peri-implant radiolucent halos (suggests implant loosening or infection)
- Osteotomy gap not narrowing by 8 weeks (suggests delayed union or infection)
For the TPA measurement guide, see what causes TPLO surgery in dogs. For post-operative complications, see 15 common complications after TPLO surgery.
For the plate infection guide, see TPLO plate infection signs and treatment. For bone healing information, see TPLO bone healing time in dogs.
Frequently asked questions
Does the dog need to be sedated for TPLO radiographs?
Sedation is strongly recommended and preferred. An unsedated dog -- particularly one in pain from CCL disease -- cannot maintain the precise positioning required for accurate TPA measurement.
Even minor position changes between preparation and exposure produce significant error. Sedation allows the technician to position the limb correctly and hold it in place without the dog shifting.
Why does the hock position matter for the lateral view?
The hock angle affects the position of the tibia relative to the table and the imaging plate.
When the hock deviates from approximately 90 degrees, the tibia is either elevated or depressed at the distal end, which changes the apparent angle of the tibial plateau.
This error is captured in the TPA measurement.
What is a normal TPA range and when should TPLO be recommended?
Today's Veterinary Practice confirms the average TPA in most dogs is 23 to 29 degrees. Some small breeds have higher averages.
Dogs with TPA greater than 30 degrees may be poor candidates for extracapsular repair or TTA.
TPLO is appropriate for dogs of all TPA values -- the procedure specifically corrects whatever TPA angle the dog presents with.
Can the same radiograph be used for both diagnosis and surgical planning?
Yes, if it is of adequate quality and includes a calibration marker.
Diagnostic-only radiographs taken without a calibration marker can confirm CCL disease and measure TPA, but cannot be used for plate-size surgical planning.
Including a calibration marker at the time of acquisition allows a single radiograph to serve both purposes.
What happens if the TPA is measured incorrectly pre-operatively?
If the pre-operative TPA is underestimated, the surgeon may under-rotate the osteotomy and fail to reach the target 5 to 6.5 degree post-operative TPA.
This results in residual cranial tibial thrust and potentially ongoing instability. If overestimated, overcorrection is possible.
This underscores why positioning accuracy at the time of radiography is critical -- errors propagate through the entire surgical plan.
Resources
- Cave Vet Specialists. Tips for TPLO Radiographs. cave-vet-specialists.co.uk
- Today's Veterinary Practice. Cruciate Disease: How and Why to Measure Tibial Plateau Angle. todaysveterinarypractice.com
- MDPI Animals. The Effect of Femur Positioning on Measurement of Tibial Plateau Angle. ncbi.nlm.nih.gov
- Rita Leibinger. TPLO Surgical Technique. leibinger.vet
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Things to know

Post-Surgery Recovery After TPLO in Dogs
TPLO recovery is a structured, staged process. The surgery corrects the mechanical cause of CCL instability, but the bone, soft tissue, and muscle need weeks to months to rebuild around that correction.
Understanding what is required at each stage -- and what signs require prompt veterinary contact -- is as important as the surgery itself.
Quick answer: Post-TPLO recovery requires 8 to 12 weeks of structured activity restriction for bone healing, followed by progressive rehabilitation. Key milestones: 2-week incision recheck; 6-week radiographic assessment; 12-week final radiograph and activity clearance. Warning signs requiring same-day contact: sudden non-weight bearing, spreading redness or discharge, fever, or worsening lameness.
Key takeaways
- The first 2 weeks are the most critical: the osteotomy has no mechanical strength; jumping, running, or slipping can displace the plate; crate rest with bathroom leash walks only is non-negotiable
- Most dogs begin toe-touching within 24 to 48 hours of surgery: early weight bearing maintains muscle mass and stimulates bone healing; it does not indicate readiness for more activity
- Cold therapy for the first 3 to 5 days significantly reduces swelling and pain: 10 to 15 minutes of wrapped ice pack applied 3 to 4 times daily is the most effective owner-administered early intervention
- The 6-week radiograph is the gate for activity increase: bone healing cannot be confirmed clinically; radiographic assessment is the only reliable confirmation of osteotomy progression
- Full muscle recovery takes 4 to 6 months: bone healing at 12 weeks and full functional recovery are different endpoints
- Reducing food intake by approximately 30% during recovery prevents weight gain that stresses the healing osteotomy; activity restriction rapidly leads to weight gain without dietary adjustment
Immediate post-operative period: the first 24 to 48 hours
Coming home
Most dogs are discharged 24 to 48 hours after TPLO, though same-day discharge protocols exist at some facilities.
The dog will be sedated, disoriented from anesthesia, and may have bandaging on the surgical leg. Expect:
- Grogginess and disorientation for 12 to 24 hours from anesthesia
- Some whining or restlessness (often anesthesia effect, not pain)
- Refusal to bear weight or toe-touching only
- Mild to moderate swelling around the incision, peaking at days 2 to 5
Setting up the recovery space
Before the dog arrives home, have in place:
- A correctly sized crate in the main living area
- Non-slip mats or yoga mats over all hard flooring
- Soft, washable bedding in the crate
- Water and food at floor level
- Baby gates blocking stairs
- Medications filled and ready
Medications: first day priorities
Give prescribed medications on the schedule provided at discharge. NSAIDs (meloxicam, carprofen) require food. Gabapentin causes sedation -- this is expected and helps with pain and anxiety in the first days.
Never skip doses or give extra without veterinary guidance.
Week-by-week recovery overview
Weeks 1 to 2: incision healing phase
Activity: crate rest except for bathroom leash walks. Maximum 5-minute walks, 3 to 5 times daily. No stairs, no furniture, no running, no off-leash time.
E-collar: must be worn at all times except supervised eating. One licking episode can introduce S. pseudintermedius from the oral cavity directly into the incision.
Cold therapy: wrap an ice pack in a thin cloth; apply to the incision for 10 to 15 minutes; 3 to 4 times daily; begin day 1 and continue through days 3 to 5.
Incision inspection: check the incision daily at a consistent time. Normal healing: redness fading from day 5, no discharge after day 3, clean approximated wound edges. Concerning: spreading redness, cloudy or malodorous discharge, wound dehiscence.
Weight management: Medcovet recommends reducing food intake by approximately 30% during the restriction period to prevent weight gain from inactivity.
2-week recheck: incision assessment, suture or staple removal if healing is confirmed, pain management review, early mobility assessment.
Weeks 3 to 6: progressive walking phase
Activity: leash walk duration increases -- by up to 5 minutes per week from the week 2 baseline. No off-leash, no running, no stairs without guidance.
Passive range-of-motion exercises: if the vet has approved, begin gentle flexion and extension of the stifle. 5 to 10 repetitions, 2 to 3 times daily. Prevents stiffness during the bone healing period.
Weight bearing: most dogs should be consistently bearing weight on the operated leg by weeks 3 to 4. Three-legged walking during activity is still common but should be decreasing.
Diet: maintain the reduced caloric intake until the vet clears increased activity.
Weeks 6 to 8: radiographic checkpoint
6-week radiograph: the single most important post-operative checkpoint. Images confirm whether the osteotomy is healing as expected. If healing is progressing, activity is increased. If healing is delayed, restrictions continue and the underlying cause is investigated.
After radiographic confirmation:
- Leash walks increase to 15 to 20 minutes
- Physiotherapy begins
- Controlled hill walking and balance work may begin
SustainableVet.org confirms: after the initial weeks of rest, swelling should decrease; gradual increase in leash walking should follow; physical therapy options include hydrotherapy, balance training, laser therapy, and massage.
Weeks 8 to 12: consolidation
10 to 12 week radiograph: confirms bone union. After radiographic confirmation of healing, activity restrictions are progressively lifted.
Return to activity: activity is reintroduced progressively over the following 4 to 6 weeks. No sudden full return to prior activity level.
Managing common post-operative issues
Swelling
Expected: peaks at days 2 to 5, resolves by 2 weeks. Ankle swelling from gravity-dependent fluid migration is normal at days 3 to 5.
Concerning: swelling that is not reducing after day 5, or that reappears after initial resolution.
Management: cold therapy in the first 3 to 5 days; elevation where possible; contact vet if swelling is not following the expected trajectory.
Pain and restlessness
Normal pain is controlled by the prescribed medication regimen and should consistently decrease over the first 2 weeks.
Uncontrolled pain (unable to settle, continuous crying, refusing all weight bearing beyond day 3) requires a vet call -- medication adjustment or a complication evaluation is needed.
Incision care
Do not clean the incision daily unless specifically instructed by your vet. Daily inspection is required; daily cleaning is not. If cleaning is needed, use only the vet-approved solution.
Constipation
Opioid pain medications commonly cause constipation in the first days. Discuss this with your vet at discharge -- they may recommend a stool softener if constipation becomes a concern.
Warning signs that require same-day veterinary contact
- Sudden complete non-weight bearing after a period of partial bearing
- Spreading redness beyond the incision margins
- Cloudy, yellow, green, or malodorous discharge from the incision
- Wound edges separating
- Fever (rectal temperature above 39.5 C / 103.1 F)
- Lameness worsening after a period of improvement (trajectory reversal)
- New swelling at the plate site (not the incision) after the second week
- Any systemic sign (lethargy, inappetence, fever) accompanying local wound changes
For the full recovery timeline overview, see what to expect after TPLO surgery in dogs. For confinement setup, see how to confine your dog after TPLO surgery.
For infection prevention, see TPLO incision infection: symptoms and prevention. For physical therapy timing, see when to start physical therapy after TPLO surgery.
Frequently asked questions
My dog is not using the leg at all 5 days after surgery. Is this normal?
Some dogs refuse to bear weight for the full first 2 weeks -- this is within the normal range.
If the dog was bearing some weight at days 2 to 3 and has now stopped completely, or shows signs of severe pain, contact your vet to rule out a complication.
Persistent non-weight bearing beyond 2 weeks warrants assessment.
When can my dog go back to sleeping in our bed?
Not during the restriction period. Jumping off the bed -- even once -- generates the same plate-failure risk as running.
The dog must sleep in the crate or on a floor-level dog bed for the full restriction period.
My dog is constantly trying to lick the incision. What can I do?
Ensure the e-collar is the correct size -- most dogs can reach their hind legs with a collar that is too small.
Try a longer cone or a recovery suit (medical pet shirt) as a supplement. Ask your vet about trazodone or gabapentin for anxiety driving the licking behavior.
Do not remove the e-collar to give the dog a break unless you are directly supervising and can prevent licking.
Can I give my dog human joint supplements during recovery?
Some human supplements (fish oil at appropriate doses) are safe. Others contain xylitol or other ingredients toxic to dogs. Never give a human supplement without explicit vet approval.
Veterinary-formulated joint supplements are the safer choice.
How do I know when recovery is complete?
Recovery is complete when: (a) the 12-week radiograph confirms bone union, (b) the vet clears full activity, and (c) the operated leg has regained near-symmetrical muscle mass (4 to 6 months).
Bone healing at 12 weeks is the legal clearance; full muscle recovery is the functional completion of recovery.
Resources
- SustainableVet. Post-Surgery Recovery After TPLO in Dogs. sustainablevet.org
- Medcovet. Essential Guide to Dog Recovery TPLO Surgery. medcovet.com
- TPLO Info. What to Expect After Your Dog's TPLO Surgery. tploinfo.com
- VCA Animal Hospitals. TPLO. vcahospitals.com
X min read

Dog Meniscus Tear After TPLO: Symptoms and Solutions
A meniscal tear after TPLO surgery is one of the most recognized post-operative complications.
The medial meniscus is at risk both at the time of CCL rupture and after surgery, when residual instability or degenerative changes can damage tissue that appeared normal during the original procedure.
Recognizing the signs early significantly improves outcomes.
Quick answer: Post-TPLO meniscal tears present as sudden lameness return in a previously improving dog, often with a meniscal click. Late tears occur in 2 to 22% of TPLO cases (RCVS). PubMed found 5.6% late meniscal tear incidence. Treatment is partial meniscectomy; all dogs treated returned to peak limb function per PubMed.
Key takeaways
- Late meniscal tears occur in 2 to 22% of post-TPLO dogs: RCVS confirms this range; a PubMed TPLO arthroscopy study found a 5.6% late meniscal tear incidence
- The hallmark sign is sudden lameness regression in a previously improving dog: RCVS confirms affected dogs display good mobility and then go suddenly lame; this trajectory reversal distinguishes meniscal injury
- The meniscal click is audible but not always present: the absence of a click does not rule out meniscal injury
- The meniscus does not heal on its own: limited blood supply prevents natural regeneration; small tears may be managed conservatively but most require partial meniscectomy
- Partial meniscectomy produces excellent outcomes: all dogs treated by partial meniscectomy returned to peak limb function (PubMed); outcomes at 6 months are comparable to dogs with intact menisci
- Concurrent meniscal tears do not worsen long-term outcomes: AVMA research found similar midterm outcomes for TPLO plus meniscectomy vs TPLO alone, despite more severe arthritis at surgery
The medial meniscus: what it is and why it is at risk
The medial meniscus is a crescent-shaped fibrocartilage structure on the inner surface of the stifle joint. It distributes joint load, provides shock absorption, and stabilizes the joint during weight bearing.
Each stifle has two menisci. The medial is injured far more frequently because it is firmly attached to the tibia and cannot shift away from the abnormal tibial movement during CCL rupture.
SustainableVet.org confirms: the medial meniscus is more prone to injury because it is firmly attached to the tibia. When the tibia slides forward, it is compressed by the femoral condyle.
Why meniscal tears occur after TPLO
Latent tears missed at surgery
At the time of TPLO, the surgeon examines the meniscus through a small arthrotomy or arthroscopy and removes any clearly damaged tissue. However, not all tears are visible at surgery.
Small partial-thickness tears or areas of early degeneration may not be identifiable intraoperatively but progress to complete tears in the weeks or months after surgery.
PMC confirms: post-surgical meniscal pathology may be due to failure of diagnosis at the time of surgery (latent tears) or a result of residual joint instability (post-liminary tears).
Residual joint instability after TPLO
TPLO eliminates the cranial shear force that destabilized the joint. However, the stifle undergoes significant remodeling in the weeks after surgery, and some residual instability may persist during this period.
This can subject a structurally weakened meniscus to loading forces that produce tearing.
SustainableVet.org confirms: meniscal tears after TPLO can occur due to ongoing joint instability before surgery, direct trauma, or degenerative changes.
Progressive degeneration
Older dogs are at higher risk for meniscal tears because the meniscus undergoes age-related degeneration -- loss of collagen fiber organization, reduced cell density, and decreased water content.
PMC confirms: increasing age is a risk factor for medial meniscal tear; the meniscus experiences oxidative stress and abnormal matrix organization that can lead to injury under normal loading forces.
Concurrent vs. late meniscal tears
Concurrent (primary) tears
These are meniscal tears present at the time of TPLO and treated during the original surgery. PubMed data found a concurrent meniscal tear prevalence of 32.2% in dogs undergoing TPLO.
These are removed at the time of the procedure via arthrotomy or arthroscopy.
Late (secondary) tears
These are meniscal tears that develop after TPLO in a previously intact or adequately treated meniscus. The PubMed TPLO arthroscopy study found a late meniscal tear incidence of 5.6%.
RCVS Canine Cruciate Registry confirms late meniscal tears are seen in 2 to 22% of cases.
SustainableVet.org confirms: a secondary meniscus tear often happens weeks or months after the initial procedure and results in immediate pain, limping, and reluctance to move.
Symptoms of a post-TPLO meniscal tear
Sudden lameness regression: the most characteristic sign. A dog making steady progress suddenly becomes lame on the operated leg. This is distinct from the gradual variability of normal TPLO recovery.
Audible or palpable meniscal click: a clicking or popping sound during stifle flexion and extension. SustainableVet.org confirms the knee may produce a clicking sound when moving. The click is heard when the torn meniscal flap is displaced by the femoral condyle.
Pain on stifle manipulation: the dog flinches, vocalizes, or resists when the stifle is flexed through its range. This distinguishes pain from benign mechanical clicking.
Stifle swelling: joint effusion may increase from the baseline level. The joint feels fuller and may be warmer than the contralateral stifle.
Reluctance to bear weight: the dog shifts weight off the operated leg, holds the leg up, or toe-touches only.
SustainableVet.org confirms: symptoms include a sudden return of lameness, difficulty bearing weight, or a clicking or popping sound when the knee moves; dogs may yelp when standing or walking.
Diagnosis
Veterinary evaluation includes:
Physical examination: stifle manipulation to assess pain, range of motion, joint effusion, and presence of a palpable meniscal click. The McMurray-type maneuver and medial meniscal compression test are used to localize meniscal pain.
Radiographs: assess joint effusion (fat pad displacement), osteotomy healing, and implant position. Radiographs do not directly image the meniscus but rule out implant complications as the cause of lameness.
Arthroscopy or arthrotomy: definitive diagnosis. Direct visualization of the meniscus under anesthesia identifies the location, type, and severity of the tear.
Treatment
Conservative management
Small or partial-thickness tears without significant clinical signs can be managed conservatively with:
- NSAIDs for 4 to 8 weeks
- Strict activity restriction
- Joint supplements (omega-3 fatty acids, glucosamine, chondroitin)
- Reassessment if signs do not resolve
SustainableVet.org confirms: small tears may be managed with rest, NSAIDs, and joint supplements; but severe cases often require surgical intervention.
Partial meniscectomy
The definitive treatment for complete or symptomatic meniscal tears. The surgeon removes the damaged portion of the meniscus arthroscopically or via a small arthrotomy, leaving the undamaged portion intact.
The outcomes of partial meniscectomy are excellent. PubMed confirms: all dogs with late meniscal tears treated by partial meniscectomy returned to peak postoperative limb function based on client-assessed outcomes.
AVMA research confirms: treatment for meniscal tear results in significant improvement in lameness, with postoperative outcomes at 6 months comparable to dogs with intact menisci.
RCVS confirms: meniscal tears are treated by removing the torn portion. Dogs with long-term meniscal tears have a bit more osteoarthritis but generally maintain a good quality of life.
Post-meniscectomy recovery
Recovery after partial meniscectomy is typically faster than the original TPLO recovery. The osteotomy is already healed; the additional recovery is for the joint to settle after the meniscectomy.
Most dogs return to normal activity within 4 to 8 weeks.
For the clicking guide, see why is my dog's leg clicking after TPLO surgery?. For the lameness guide, see lameness after TPLO surgery in dogs.
For the infection signs guide, see earliest signs of TPLO infection. For the TPLO complications guide, see 15 common complications after TPLO surgery.
Frequently asked questions
How do I know if it is a meniscal tear or normal recovery variability?
The key is trajectory. Normal recovery shows week-over-week improvement with occasional minor setbacks. A meniscal tear produces a clear regression: the dog was improving, then suddenly lame.
If your dog has been consistently improving and then becomes acutely lame, contact your vet the same day.
Can a meniscal tear be seen on X-ray?
No. Radiographs cannot image cartilage. X-rays assess bone, implant, and joint effusion. A suspected meniscal tear requires arthroscopy or an MRI (less common in veterinary practice) for definitive diagnosis.
Will my dog need another general anesthetic for the meniscectomy?
Yes. Arthroscopy or arthrotomy for partial meniscectomy requires general anesthesia. The procedure is typically shorter than the original TPLO and recovery is faster because the plate and osteotomy are already healed.
Is there anything that could have been done to prevent this?
Not reliably. The risk of late meniscal tears is partly structural (inherent joint instability during healing), partly degenerative (pre-existing meniscal weakness), and partly age-related.
Strict activity restriction during recovery reduces the risk by minimizing the abnormal joint loading that can damage a weakened meniscus, but it cannot eliminate risk entirely.
My dog had a concurrent meniscal tear treated at the time of TPLO. Is the outcome worse?
No.
AVMA research confirms similar midterm functional outcomes for TPLO plus meniscectomy vs TPLO alone in dogs with intact menisci.
Resources
- RCVS Canine Cruciate Registry. Meniscal Tears. ccr.rcvsknowledge.org
- PubMed. Incidence of Medial Meniscal Tears After Arthroscopic Assisted TPLO. pubmed.ncbi.nlm.nih.gov
- AVMA Journals. Concurrent Bucket Handle Meniscal Tear Treated with Arthroscopic Partial Meniscectomy Does Not Influence Midterm Outcomes After TPLO. avmajournals.avma.org
- PMC. Associations Between Meniscal Tears and Osteoarthritis Among Dogs Undergoing TPLO. pmc.ncbi.nlm.nih.gov
X min read

Staph Infection After TPLO Surgery: Signs & Risks
Staphylococcus species are the most common cause of surgical site infections (SSI) after TPLO surgery in dogs.
The primary culprit is Staphylococcus pseudintermedius -- a bacterium that normally lives on the skin, nares, and perianal area of healthy dogs.
Understanding why this organism is so prevalent, how it produces infection, and what makes methicillin-resistant strains particularly challenging is essential for owners of TPLO dogs and the veterinary professionals treating them.
Quick answer: S. pseudintermedius is the most common cause of post-TPLO infection. MRSP accounted for 28% of infections in a 659-TPLO study. Signs include redness, swelling, warmth, and discharge -- or only lameness regression and plate-site swelling for deep implant infections. Culture and sensitivity testing is required; empirical treatment risks selecting for further resistance.
Key takeaways
- S. pseudintermedius is the most frequently identified pathogen in TPLO infections: a normal skin commensal in dogs; the PMC 769-TPLO study identified it in 37 of 65 SSI cases
- MRSP accounted for 28% of infections in a 659-TPLO study: a high proportion of resistant organisms in a single surgical population; MRSP does not respond to many first-line antibiotics
- Biofilm formation on the TPLO plate makes staph infections difficult to treat: once established on the metal plate, bacteria are protected from antibiotics; deep implant infections often require plate removal
- Signs of staph infection range from visible wound changes to none: superficial infections produce redness, warmth, and discharge; implant infections may show only lameness regression and plate-site swelling
- Diagnosis requires bacterial culture and sensitivity testing: MRSP cannot be diagnosed visually; empirical antibiotic treatment without culture risks selecting for further resistance
- Pre-operative MRSP carriage significantly increases SSI risk: preoperative MRSP colonization is an independent risk factor; dogs with known carriage require enhanced perioperative protocol
Why S. pseudintermedius is so prevalent in TPLO SSI
It is a normal resident of dog skin
S. pseudintermedius colonizes the skin, nares, and perianal area of most dogs as part of their normal flora. It is present on the surgical preparation area even after antiseptic skin preparation.
The preparation reduces the bacterial load but does not sterilize the skin.
SustainableVet.org confirms: S. pseudintermedius is naturally found on a dog's skin; in healthy dogs it rarely causes issues, but after TPLO surgery it can infect the surgical incision and implants.
The TPLO plate provides a preferred colonization surface
Metal implants dramatically lower the minimum infective dose -- the number of bacteria required to establish infection. On a plate surface, S. pseudintermedius can form biofilm with far fewer organisms than required to infect soft tissue alone.
SustainableVet.org confirms: TPLO surgeries are particularly prone to infection because of the metal implants, which provide a surface for bacteria to stick to and form biofilms.
Licking introduces oral cavity organisms to the incision
The oral cavity of dogs is also colonized with S. pseudintermedius. When a dog licks the incision, it introduces additional bacteria directly to the wound.
This is the most common mechanism of avoidable post-TPLO SSI.
ResearchGate MRSA TPLO case report confirms: the dog licked the surgical site, causing dehiscence, and MRSA was detected from the purulent discharge. This underscores the critical importance of e-collar compliance.
MRSP: the resistant strain that complicates treatment
MRSP (methicillin-resistant Staphylococcus pseudintermedius) is resistant to beta-lactam antibiotics via the mecA gene -- the same mechanism as MRSA in humans. Cephalexin, amoxicillin-clavulanate, and most penicillins are ineffective.
Why MRSP is a particular challenge in TPLO
Most perioperative antibiotic protocols use cefazolin (a cephalosporin). MRSP is resistant to cephalosporins by definition.
If a dog unknowingly colonized with MRSP receives cefazolin prophylaxis, the MRSP is not suppressed. If it reaches the plate, it establishes infection against which standard first-line antibiotics are ineffective.
SustainableVet.org confirms: MRSP has developed resistance to many commonly used antibiotics, making infections harder to treat and increasing the risk of complications.
MRSP incidence in TPLO infections
ResearchGate TPLO MRSA/MRSP study (659 TPLO procedures, SSI rate 11%): MRSP accounted for 20 of 71 infections (28%). This is a high proportion of resistant organisms in a post-surgical population.
Antibiotic options for MRSP
First-line options for susceptible S. pseudintermedius (cephalexin, amoxicillin-clavulanate) do not work for MRSP. Culture and sensitivity testing is required to identify effective agents. Common options based on sensitivity results include:
- Chloramphenicol: effective against many MRSP; requires bone marrow monitoring
- Clindamycin: effective if sensitivity confirmed; not all MRSP strains
- Doxycycline: bacteriostatic; used for some superficial MRSP infections
- Rifampin (rifampicin): excellent biofilm penetration; always combined with another agent to prevent resistance; used for implant-associated MRSP
- Vancomycin: last resort; the MRSA TPLO case report describes a rifampin-vancomycin combination resolving MRSA infection that persisted despite implant removal and vancomycin alone
SustainableVet.org confirms: one of the biggest challenges in treating staph infections after TPLO is the presence of multidrug-resistant bacteria, particularly MRSP; this strain has developed resistance to many commonly used antibiotics.
Signs of post-TPLO staph infection
Superficial incisional infection (SSI-S)
- Redness spreading beyond the incision line (after day 5)
- Warmth at the incision site increasing rather than decreasing
- Swelling that is not resolving or is increasing
- Discharge: cloudy, yellow, green, or malodorous from the incision
- Wound edges that are not healing or are separating
Deep implant-associated infection (SSI-D)
- New or worsening lameness after a period of improvement
- Swelling over the plate site (not necessarily at the incision)
- Warmth specifically at the plate site on palpation
- A draining tract opening near but not at the incision (typically weeks to months post-surgery)
- No discharge from the original incision despite significant clinical signs
SustainableVet.org confirms: signs of infection include redness, swelling, warmth around the incision, pus-like discharge, an unpleasant odor, and increased pain or tenderness.
Diagnosis
Wound swab culture: taken from discharge at the incision or from the draining tract. Provides the organism identification and sensitivity profile.
Deep tissue culture: more accurate than wound swabs because it avoids surface contamination. Obtained at surgery (arthrotomy or plate removal).
Plate surface culture: the most sensitive diagnostic for implant-associated infection. Obtained when the plate is removed.
Imaging: radiographs assess peri-implant bone changes (radiolucent halos, periosteal reaction); advanced imaging (CT) may be used for complex deep infections.
The PMC 769-TPLO study confirmed: bacterial culture was positive in 72% of samples submitted when SSI was first suspected.
Treatment
Superficial infection: culture-directed oral antibiotics for 2 to 4 weeks; wound cleaning; e-collar compliance to prevent licking; local wound care.
Deep implant-associated infection: surgical debridement (lavage and debridement of the plate site); culture; culture-directed antibiotics for 4 to 8 weeks; plate retention if the osteotomy is not yet healed (with the understanding that complete resolution may require later plate removal); plate removal once the osteotomy has healed.
MRSP-specific: culture results guide antibiotic selection. Rifampin combinations are used for biofilm-associated implant infections. Veterinary infectious disease consultation is appropriate for complex MRSP cases.
For the infection prevention guide, see how can TPLO infections be prevented post-operatively?. For MRSP specifically, see can MRSP or MRSA occur after TPLO surgery?.
For the SSI rate data, see how common are infections after TPLO surgery?. For the antibiotic guide, see antibiotics commonly used for TPLO infections.
Frequently asked questions
My dog had a culture and it came back as S. pseudintermedius. Is that MRSP?
Not necessarily. S. pseudintermedius can be methicillin-susceptible (MSSP) or methicillin-resistant (MRSP). The sensitivity panel on the culture report will indicate whether the organism is susceptible to cephalexin and other beta-lactam antibiotics.
If susceptible, it is MSSP and responds to standard first-line drugs. If resistant to cephalosporins, it is MRSP and requires second-line agents.
Can I prevent staph infection after TPLO?
Licking prevention (e-collar compliance for 10 to 14 days) is the single most impactful owner-controlled prevention measure. Licking is the most common avoidable cause of post-TPLO SSI.
Wound dryness, clean bedding, limited environmental contamination, and daily wound inspection are additional preventive measures.
My dog finished the antibiotic course but the discharge came back. What does that mean?
Recurrence after antibiotic completion most commonly indicates biofilm-associated implant infection that was suppressed but not eradicated by antibiotics. Plate removal is likely needed for definitive resolution.
Contact your vet immediately -- do not wait to see if it resolves again.
Can my dog spread MRSP to other dogs or people?
MRSP is primarily a veterinary pathogen. It is less commonly transmitted to humans than MRSA, but zoonotic transmission has been documented.
Standard hygiene measures (hand washing after wound care, gloves for wound dressing changes, avoiding face contact with the infected wound) are appropriate precautions during treatment.
How long does it take to clear a deep staph infection after TPLO?
Deep implant-associated infections typically require 4 to 8 weeks of culture-directed antibiotics plus plate removal once the osteotomy is healed.
MRSP infections that involve biofilm and require rifampin combinations may take 3 to 6 months of total treatment. Osteomyelitis extends this further.
Long courses are necessary because biofilm-associated bacteria are protected from antibiotics and resistant populations can regrow when treatment stops.
Resources
- PMC. Surgical Site Infection After 769 TPLOs. pmc.ncbi.nlm.nih.gov
- ResearchGate. Treatment of MRSA Infection Following TPLO in a Dog. researchgate.net
- SustainableVet. Staph Infection After TPLO Surgery. sustainablevet.org
- SustainableVet. Is Staph the Most Common Infection After TPLO Surgery? sustainablevet.org
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How Long Does Swelling Last After TPLO Surgery
Post-surgical swelling after TPLO is normal, expected, and self-limiting when managed correctly. Most incision-area swelling peaks within the first 2 to 5 days and resolves by 2 weeks.
Swelling that does not follow this trajectory -- that is not declining, or that appears new after initial improvement -- is the key indicator that requires veterinary attention.
Quick answer: Normal TPLO swelling peaks at days 2 to 5 and resolves within 1 to 2 weeks with cold therapy and rest. Ankle swelling from gravity-dependent fluid migration appears at days 3 to 5. Swelling increasing after day 5, or with warmth, redness, or discharge, warrants veterinary evaluation.
Key takeaways
- Normal TPLO swelling peaks at days 2 to 5: SustainableVet.org confirms mild incision swelling usually goes away within two weeks
- Ankle swelling is a normal gravity-dependent phenomenon: TPLO Info confirms ankle swelling typically appears at days 3 to 5; it is fluid migrating downward from the surgical site
- Cold therapy in the first 48 to 72 hours is the primary management tool: 10 to 15 minutes, 3 to 4 times daily, reduces swelling and pain
- Swelling worsening after day 5 or accompanied by warmth, redness, or discharge indicates infection, seroma, or hematoma; contact your vet within 24 hours
- Mild swelling can persist for weeks at a low level in larger dogs and those with poor activity restriction compliance; trajectory matters more than absolute level
- Nighttime swelling is common and normal: dogs move less at rest, allowing fluid to settle; this should improve by morning or after repositioning
Normal swelling: timeline and characteristics
Days 1 to 3: acute post-surgical swelling
Swelling begins within hours of surgery and results from:
- Surgical tissue trauma (incision through skin, subcutaneous tissue, and fascia)
- Bone cutting at the osteotomy site
- Inflammatory response to the metal plate and screws
- Fluid accumulating in the disrupted tissue spaces
This early swelling is diffuse, soft, and warm to the touch. It is the expected cellular response to surgery.
Days 2 to 5: peak swelling
Swelling typically peaks between days 2 and 5. The dog's leg may look noticeably larger at this stage, and some extension of swelling down the lower leg toward the ankle is normal.
Vetplayas confirms: swelling typically peaks within the first few days after surgery but should gradually subside over time.
Days 3 to 5: ankle swelling appears
A distinct swelling often appears at the ankle (tarsus) between days 3 and 5, sometimes alarming owners who notice it away from the surgical site. This is entirely normal.
TPLO Info confirms: it is completely normal for swelling to develop around the ankle approximately 3 to 5 days following surgery on the TPLO leg.
This swelling can be massaged and iced if it occurs and will resolve over a few days.
TPLO Austin confirms this finding identically. The mechanism is gravity-dependent migration of tissue fluid from the surgical site through the fascial planes of the lower leg.
Days 5 to 14: progressive resolution
From day 5 onward, swelling should consistently decrease with each daily inspection. Cold therapy, rest, and anti-inflammatory medication all contribute to this resolution.
SustainableVet.org confirms: mild swelling around the incision site usually goes away within two weeks. The trajectory must be consistently improving.
Beyond 2 weeks: residual low-level swelling
Some dogs retain mild soft swelling around the lower leg beyond 2 weeks, particularly larger dogs with greater tissue volume and dogs who have been less compliant with activity restriction.
This is usually minor and does not indicate a problem if:
- The swelling is soft and not warm
- There is no discharge or redness
- The dog is bearing weight and improving in lameness
Cold therapy: the primary management tool
Cold therapy is the evidence-based first-line intervention for post-surgical swelling.
Protocol:
- Wrap an ice pack or bag of frozen peas in a thin cloth or towel
- Apply to the incision and plate site for 10 to 15 minutes
- Repeat 3 to 4 times daily
- Begin on day 1 post-surgery
- Continue for the first 48 to 72 hours (the acute inflammatory phase)
SustainableVet.org confirms: cold therapy, like applying an ice pack wrapped in a towel for 10 to 15 minutes several times a day during the first 72 hours, helps reduce inflammation.
After the initial period, warm compresses can be used to promote circulation.
Never apply ice directly to the skin or incision -- frostbite and wound damage can result. Remove the pack immediately if the skin appears pale or very cold.
For the ankle specifically, TPLO Info confirms: ankle swelling can be massaged and iced. Gentle proximal-to-distal massage (toward the toes) applied after icing helps lymphatic drainage.
Concerning swelling: signs requiring veterinary contact
Swelling that is not declining after day 5
Normal swelling is consistently declining from day 5 onward. Swelling that is the same or larger than on day 3, measured at day 7, is not normal.
New swelling after apparent resolution
If swelling had reduced and then reappears -- particularly at the plate site rather than the incision -- this suggests a developing seroma, hematoma, or early infection.
SustainableVet.org confirms: you should be concerned if swelling increases after the first week or is accompanied by heat, redness, oozing, or a bad odor.
Warmth, firmness, redness, or discharge alongside swelling
These features distinguish infection from normal surgical edema. Normal edema is diffuse, soft, not dramatically warm, and has no discharge. Infection produces focal warmth, firmness, redness spreading beyond the incision, and discharge.
Swelling at the plate site (not the incision) weeks after surgery
This can indicate an implant-associated infection with seroma or early osteomyelitis. Requires radiographic assessment and deep sampling.
Seroma: a specific type of post-surgical swelling
A seroma is a localized collection of clear serous fluid under the skin, forming when tissue spaces fill with tissue fluid that has not been reabsorbed.
Seromas after TPLO are common and are distinct from infection.
Signs of seroma:
- A soft, fluctuant (fluid-filled) swelling at or near the incision
- Typically appears 1 to 3 weeks post-surgery
- Fluid is clear or pale yellow when aspirated
- No warmth, redness, or discharge from the incision itself
Most seromas resolve without treatment. Your vet will assess whether aspiration or monitoring is appropriate.
For the fluid buildup guide, see fluid buildup after TPLO surgery in dogs. For the ankle swelling guide, see ankle swelling after TPLO surgery in dogs.
For the infection signs guide, see TPLO plate infection signs and treatment. For the bruising guide, see bruising after TPLO surgery in dogs.
Frequently asked questions
Is it normal for the whole leg to swell after TPLO?
Yes, in the early days. Diffuse swelling of the lower leg, extending from the surgical site toward the ankle, is normal in the first 1 to 2 weeks.
Gravity and the inflammatory response both contribute. This resolves as the inflammatory process settles and the dog begins controlled weight bearing.
My dog's leg looks huge at day 3. Is that too much?
Day 3 is within the normal peak swelling period.
Unless the swelling is dramatically asymmetric compared to the other leg, is very hot, or is producing discharge, observe and continue cold therapy as directed.
If you are concerned, contact your vet to describe the swelling -- they can advise whether in-person assessment is needed.
Should I massage the swollen leg?
Gentle lymphatic massage (soft strokes toward the body, from the ankle upward) after icing can help reduce distal swelling.
Do not massage directly over the incision or plate site, and do not massage aggressively. Ask your vet or rehabilitation therapist to demonstrate the correct technique.
My dog's swelling is going up and down -- bigger in the evening, smaller in the morning. Is that normal?
Yes. SustainableVet.org confirms that mild nighttime swelling occurs because dogs move less while resting, allowing fluid to settle. Morning improvement after repositioning and movement is normal.
The concern is when the morning maximum is larger than the previous day's morning maximum -- a consistently worsening trend.
When does warm therapy replace cold therapy?
Cold therapy is most beneficial in the first 48 to 72 hours (the acute inflammatory phase). After 72 hours, warm compresses promote circulation and may help reabsorb residual fluid.
The transition is typically around days 3 to 5. Never apply warmth to an incision that looks infected or discharging -- this can worsen infection.
Resources
- TPLO Info. TPLO Recovery FAQ. tploinfo.com
- SustainableVet. Post-Surgery Recovery After TPLO in Dogs. sustainablevet.org
- TPLO Austin. TPLO Incision Care After Surgery. tploaustin.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com
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Long-Term Outcomes of TPLO Surgery
TPLO produces excellent long-term outcomes for most dogs with CCL rupture.
The published evidence covers follow-up periods from 1 year to 6.8 years post-surgery and consistently shows high rates of functional recovery alongside moderate but ongoing arthritis progression.
Understanding what the data shows helps owners set realistic expectations about what TPLO achieves and what ongoing management is required.
Quick answer: Published long-term TPLO outcomes: 90 to 95% of dogs regain complete or near-complete limb function; good to excellent results in 90.4% of patients at up to 6.8 years; 93% owner satisfaction at 12 months (RCVS). Arthritis progresses moderately in all CCL-affected stifles but TPLO produces less progression than TTA.
Key takeaways
- 90 to 95% of dogs regain complete or near-complete limb function: RCVS Canine Cruciate Registry confirms this range; 93% owner satisfaction at 12 months
- Good to excellent results in 90.4% of patients up to 6.8 years post-surgery: TPLO Info cites this long-term retrospective study, one of the longest published TPLO follow-up datasets
- Arthritis progresses in all CCL-affected joints regardless of surgical technique: TPLO slows progression compared to TTA and lateral suture but does not stop it
- TPLO produces better long-term outcomes than TTA in comparative studies: OA progressed more after TTA; TPLO dogs had less pain, better walking, less morning stiffness, and better quality of life at 3+ years per the 94-dog study
- TPLO produces better owner satisfaction than lateral suture: 93% vs. 75% for lateral fabellar suture per TPLO Info; kinematic gait analysis also favored TPLO
- Meniscal management at the time of TPLO affects long-term outcomes: dogs with partial meniscectomy had higher rates of excellent long-term results and less OA progression per TPLO Info
Functional outcomes: what the data shows
At 1 year post-surgery
A 2013 comparative study of TPLO vs. TTA found TPLO patients achieved 93% restoration of limb function at 1 year, as assessed by objective force plate analysis.
This is the most frequently cited 1-year outcome figure.
RCVS Canine Cruciate Registry confirms: 90 to 95% of dogs regain complete or near-complete function; 93% of owners report satisfaction at 12 months.
At 2 years post-surgery
A PMC long-term functional outcome study found that most dogs with CCL repair -- regardless of technique -- showed improvement in limb function at 2 years compared to pre-operative status.
Objective gait analysis at 2 years showed that the operated leg approached the contralateral leg in force plate measurements.
At 3+ years post-surgery
The comparative TPLO vs. TTA study with follow-up at 3+ years provides the clearest long-term comparative data:
- OA progressed more in TTA than in TPLO dogs
- TPLO dogs scored better on the Canine Brief Pain Inventory across all domains (average pain, walking interference, morning stiffness, jumping, climbing)
- TPLO dogs scored better on the Canine Orthopedic Index (quality of life)
- The study concluded TPLO provides better long-term radiographic and functional outcome than TTA
At up to 6.8 years post-surgery
TPLO Info cites a long-term retrospective study with follow-up extending to 6.8 years: good to excellent results were obtained in 90.4% of patients at this timeframe.
This is the longest published follow-up in a TPLO outcome dataset and confirms that the 90%+ functional recovery rate is durable over years rather than only at 12 months.
Arthritis: the universal long-term consideration
All dogs with CCL disease develop progressive osteoarthritis in the affected stifle. This is true regardless of whether surgical or conservative management is chosen.
TPLO reduces the rate of arthritis progression and the severity of clinical signs compared to lateral suture stabilization and TTA, but arthritis progression continues.
TPLO Info confirms: in the long term, there was a moderate but significant progression of OA following TPLO.
SustainableVet.org confirms: while TPLO stabilizes the knee and slows down arthritis progression, it does not completely eliminate the risk; mild arthritis is expected, even in successful cases.
Managing long-term arthritis after TPLO
Weight management: every additional kilogram of body weight increases stifle joint loading. Maintaining lean body condition is the single most impactful owner-controlled variable for arthritis management.
Joint supplements: glucosamine, chondroitin, and omega-3 fatty acids (fish oil) are commonly recommended and have evidence supporting modest benefit for joint health and comfort.
Low-impact exercise: regular, controlled exercise (walking, swimming, hydrotherapy) maintains muscle mass and joint lubrication without the impact forces of running and jumping. Consistent low-impact exercise is more beneficial than sporadic high-intensity sessions.
NSAIDs for flares: carprofen, meloxicam, or other veterinary NSAIDs are used for periods of increased arthritis pain. Long-term NSAID use requires periodic monitoring of renal and hepatic function.
Rehabilitation: an ongoing physiotherapy relationship with a certified canine rehabilitation practitioner helps maintain muscle mass and joint mobility as the dog ages.
Factors that affect long-term outcomes
Age at surgery: younger dogs typically achieve better long-term function than older dogs. Older dogs heal more slowly and have a higher baseline level of arthritis-related joint change before surgery.
Body weight: heavier dogs show more arthritis progression and more persistent lameness than lighter dogs at equivalent follow-up periods.
Meniscal management: TPLO Info confirms partial meniscectomy (when a meniscal tear is present) is associated with significantly higher rates of excellent long-term results and less OA progression compared to meniscal release or leaving the meniscus intact when abnormal.
Surgical timing: earlier intervention (before severe arthritis develops) produces better long-term outcomes. Dogs treated early in the disease process have less existing joint damage at the time of surgery.
Rehabilitation compliance: dogs that complete structured rehabilitation programs and achieve good muscle mass restoration have better long-term function than those managed with restricted activity alone.
Bilateral CCL disease: TPLO Info confirms OA progresses more in dogs with bilateral stifle surgery than unilateral. This may reflect the more severe underlying degenerative process in these dogs.
TPLO vs. lateral suture: long-term comparison
TPLO Info confirms owner satisfaction of 93% for TPLO vs. 75% for lateral fabellar suture; kinematic gait analysis also favored TPLO outcomes.
This comparison is most relevant for medium-sized dogs where both procedures are technically appropriate. For large dogs over 35 to 40 kg, TPLO consistently outperforms lateral suture in long-term outcomes.
For small dogs under 15 kg, lateral suture achieves comparable results at substantially lower cost.
TPLO vs. TTA: long-term comparison
SustainableVet.org confirms: when comparing TTA to TPLO, research suggests similar long-term arthritis outcomes in some studies, but TPLO patients usually recover faster and regain function sooner.
The 3+ year follow-up comparative study is the most comprehensive published comparison and clearly favors TPLO in both OA progression and functional/quality-of-life outcomes.
For the TPLO overview, see what is TPLO surgery in dogs?. For the long-term effects list, see 13 long-term effects of TPLO surgery on dogs.
For surgery comparisons, see TPLO vs CBLO vs TTA: a guide to cruciate surgery options. For arthritis management, see arthritis after TPLO surgery in dogs.
Frequently asked questions
Will my dog be completely normal after TPLO?
Most dogs return to their pre-injury activity level after full recovery.
RCVS and multiple studies confirm 90 to 95% regain complete or near-complete function.
"Completely normal" is achievable for most dogs, with the caveat that some mild arthritis develops over time in virtually all cases.
Dogs may show stiffness on cold days or after long rest periods as they age.
Does TPLO stop arthritis?
No -- it reduces and slows arthritis progression compared to conservative management and other surgical techniques, but does not stop it. All CCL-affected stifles develop progressive OA.
The goal of TPLO is to stabilize the joint and minimize the rate of arthritis development, not eliminate it.
How long does the TPLO plate last?
The plate is designed to be permanent.
Good to excellent results at 6.8 years (the longest published TPLO follow-up) with the plate in place demonstrates the durability of the implant in the overwhelming majority of cases.
Plate complications requiring removal occur in 3.5 to 7.5% of cases.
Is my dog at risk for the CCL on the other side?
Yes. RCVS confirms approximately 50% of dogs will develop CCL disease in the other hind limb.
This is not a consequence of TPLO -- it reflects the degenerative nature of CCL disease that typically affects both stifles. Monitoring the contralateral stifle is appropriate in all TPLO dogs.
Does the long-term outcome depend on the surgeon's experience?
Yes, to some degree. Surgeons with more TPLO experience have lower complication rates (including SSI and delayed union), and complications are associated with worse long-term outcomes.
Using a board-certified surgeon or an experienced general practitioner with dedicated TPLO training reduces risk. The published SSI studies confirm surgeon experience as an independent risk factor for post-TPLO complications.
Resources
- TPLO Info. TPLO Literature and Studies. tploinfo.com
- RCVS Canine Cruciate Registry. Tibial Plateau Levelling Osteotomy (TPLO). rcvsknowledge.org
- PMC. Long-Term Functional Outcome After Surgical Repair of Cranial Cruciate Ligament Disease in Dogs. ncbi.nlm.nih.gov
- SustainableVet. Long-Term Outcomes of TPLO Surgery. sustainablevet.org
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Dog Incontinence After TPLO Surgery: Causes & Care
Urinary incontinence after TPLO surgery is not a common complication, but it does occur and is understandably alarming for owners.
In most cases it is a temporary consequence of anesthesia, pain medication, stress, or reduced mobility not a sign of a serious surgical problem.
Knowing the causes, the timeline, and when to call your vet helps you respond appropriately.
Quick answer: Incontinence after TPLO is usually temporary from anesthesia, pain medications, reduced mobility, or stress. Most cases resolve within days to weeks. Call your vet if it persists beyond 2 to 4 weeks or comes with bloody urine or fever.
Key takeaways
- Immediate post-TPLO incontinence is most often from anesthesia or nerve irritation: both are temporary and resolve within days to weeks
- Opioid pain medications cause urinary retention or reduced bladder awareness in some dogs this resolves as medications are tapered
- Postoperative swelling may temporarily irritate nerves involved in bladder control; this resolves with swelling
- Reduced mobility is a practical contributor: a confined, painful dog may not signal in time or reach the door quickly
- Stress after major surgery can cause accidents in previously house-trained dogs; this is behavioral, not neurological
- Genuine nerve damage from TPLO is rare: incontinence persisting beyond 6 weeks warrants neurological evaluation
Why dogs may become incontinent after TPLO surgery
Anesthesia effects
General anesthesia temporarily suppresses normal nerve function throughout the body, including the neural pathways that control bladder filling awareness and sphincter tone.
As anesthetic drugs are metabolized over the 12 to 24 hours after surgery, some dogs have reduced bladder control.
This is the most common cause of immediate post-surgical incontinence. It resolves as anesthesia fully clears, typically within 24 to 48 hours.
Nausea, disorientation, and general sedation from anesthesia also mean the dog may not signal clearly when they need to go outside.
Scheduled outdoor bathroom trips every 2 to 4 hours in the first 24 to 48 hours post-surgery help manage this.
Opioid and sedative medications
Opioid pain medications commonly prescribed after TPLO affect bladder control in two ways: they reduce awareness of bladder fullness, and in some dogs cause urinary retention.
Both effects resolve as medications are tapered in the days following surgery.
Retention and incontinence are opposite problems retention is not urinating at all, while incontinence is involuntary urination but both can occur at different times as different medications have their effects.
As pain medications are tapered in the days after surgery, these effects resolve for most dogs.
Postoperative swelling and nerve irritation
The proximal tibia is surrounded by neurovascular structures. Postoperative swelling around the surgical site may temporarily compress or irritate nerves that travel to the bladder and urethra.
This is more likely in the first week after surgery when swelling is at its peak.
This type of incontinence improves as swelling resolves and typically does not indicate permanent nerve damage.
Reduced mobility
A dog recovering from TPLO is confined, in pain, and may not reach the door quickly enough when the bladder signals urgency.
This is a practical mobility problem, not a neurological one.
Frequent scheduled outdoor trips every 2 to 4 hours in the first week reduce accidents significantly. Waterproof mattress covers and washable bedding help manage the recovery period hygienically.
Stress and behavioral response
Major surgery is a significant stressor. Pain, an unfamiliar environment, an E-collar, restricted movement, and disrupted routine can cause previously house-trained dogs to have accidents unrelated to neurological dysfunction.
This type of incontinence typically resolves as the dog settles into a recovery routine at home, usually within 1 to 2 weeks.
Pre-existing urinary conditions
Dogs with pre-existing urinary sphincter mechanism incompetence (common in middle-aged spayed females), bladder infections, or weak bladder control may show worsened incontinence after surgery.
Anesthesia, medications, and reduced mobility all unmask or worsen underlying conditions.
If your dog was occasionally leaking urine before surgery, report this to your vet during the pre-surgical assessment so appropriate management can be planned for the recovery period.
Types of post-TPLO incontinence by timing
Immediate (within 24 to 48 hours): almost always anesthesia effects or opioid medication. Expected and self-limiting.
Early post-operative (days 3 to 14): medication effects, swelling-related nerve irritation, mobility limitation, or stress. Usually self-limiting with appropriate management.
Delayed onset (weeks 2 to 6): may indicate a developing urinary tract infection (UTI), which can occur after catheterization during surgery or from reduced immune response. A urinalysis is warranted if incontinence appears or worsens after initial improvement.
Chronic (beyond 6 weeks): uncommon. If incontinence persists beyond 6 weeks without improvement, veterinary evaluation for nerve damage or underlying urinary tract disease is appropriate.
Home management during recovery
- Scheduled outdoor bathroom trips every 2 to 4 hours for the first 1 to 2 weeks
- Waterproof mattress protectors and washable bedding in the recovery area
- Non-slip surfaces to reduce the effort required to stand and move toward the door
- Monitor urine color and odor cloudy, bloody, or foul-smelling urine suggests UTI
- Keep the genital area clean to prevent skin irritation from urine contact
- Use a belly band (for males) or absorbent dog diapers if incontinence is significant
When to contact your veterinarian
Call your vet if:
- The dog cannot urinate at all for more than 12 to 24 hours after surgery
- Urine is bloody, cloudy, or has a strong unusual odor (UTI signs)
- Incontinence is accompanied by straining, crying during urination, or frequent squatting without producing urine
- Incontinence worsens after initial improvement
- The dog has persistent incontinence beyond 2 to 4 weeks without any improvement
- Incontinence is combined with significant worsening lameness or systemic signs
For the not-peeing guide that covers urinary retention after TPLO, see dog not peeing after TPLO surgery: causes and care.
For the full TPLO complications reference, see 15 common complications after TPLO surgery in dogs.
For TPLO plate infection signs that may be contributing to systemic effects, see TPLO plate infection signs and treatment.
For post-op whining that may relate to the same pain driving accidents, see dog whining after TPLO surgery: causes and care.
Frequently asked questions
Is incontinence normal after TPLO surgery?
Temporary incontinence particularly in the first 24 to 48 hours is a recognized post-surgical finding related to anesthesia and opioid pain medications.
It is not an expected routine outcome, but it is not rare. If it resolves within a few days, it was almost certainly anesthesia-related.
Could my dog have nerve damage from TPLO surgery?
True nerve damage causing persistent incontinence from TPLO is rare. TPLO is performed at the proximal tibia, which is some distance from the pelvic nerves controlling bladder function.
Temporary nerve irritation from swelling is much more common than actual nerve injury and resolves as swelling subsides.
My dog was continent before TPLO and is now leaking at night. Why?
Nighttime leaking specifically is typical of urinary sphincter mechanism incompetence (USMI) a condition where the urethral sphincter relaxes during sleep or rest.
If this is new after surgery, anesthesia and opioid medications may have temporarily worsened underlying borderline sphincter function.
If it continues beyond 2 to 3 weeks, a vet visit for urinalysis and discussion of phenylpropanolamine (PPA) or other treatment is appropriate.
How do I know if my dog has a UTI after TPLO?
Signs of UTI include: cloudy or bloody urine, strong or unusual odor, frequent small amounts of urination, straining to urinate, and licking at the genital area more than normal.
Some dogs with UTI also show lethargy and decreased appetite. Urinalysis and culture confirm the diagnosis.
Should I limit my dog's water intake to reduce accidents?
No. Do not restrict water. Hydration is important for recovery and kidney function. Restricting water can concentrate the urine and increase UTI risk.
Instead, manage accidents through scheduled outdoor trips and waterproof bedding.
Resources
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
- PetMD. Urinary Incontinence in Dogs. petmd.com
- Midwest Veterinary Specialists. Post-Operative Care Following TPLO. midwestveterinaryspecialists.com
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TPLO Rehab Exercises for Dogs
Rehabilitation after TPLO surgery is not optional it is one of the primary determinants of long-term outcome.
Dogs that complete a structured rehabilitation program return to function faster, develop better muscle mass, and have lower rates of long-term lameness than those managed with rest alone.
The program follows a predictable progression from passive exercises in the first days to full activity at 4 to 6 months.
Quick answer: TPLO rehab begins with PROM and cold packing in the first days, progresses to controlled leash walks and sit-to-stand from weeks 2 to 6, then adds hydrotherapy and balance work from weeks 6 to 12. Full activity returns at 4 to 6 months after surgeon approval and radiographic confirmation.
Key takeaways
- Rehabilitation follows four phases: passive exercises, active weight-bearing, strength building, and return to activity over 3 to 6 months
- Sit-to-stand is the most important active exercise: targets quadriceps and hamstrings; begins once partial weight-bearing is established
- Hydrotherapy begins once the incision is closed (3 to 4 weeks post-surgery): up to 90% joint load reduction
- Balance work begins at weeks 4 to 6: weight shifting, single leg lifts, and balance pads correct gait patterns
- All exercise increases require surgeon approval: do not advance without veterinary guidance, especially before the 8-week radiographic recheck
- Cavalletti poles and incline walks begin at weeks 8 to 12 to challenge muscle activation and range of motion
Why rehabilitation matters after TPLO
TPLO surgery stabilizes the stifle, but surgery alone does not rebuild the muscle mass lost to months of pre-surgical lameness and the early post-operative period. Without rehabilitation, dogs develop:
- Persistent muscle atrophy and asymmetric hindlimb development
- Joint stiffness from scar tissue and reduced range of motion
- Altered gait patterns that stress the contralateral knee
- Slower overall recovery and increased risk of re-injury
Veterinary Partner (VIN) divides post-TPLO rehab into three phases.
Phase 1 manages pain while encouraging limb use (days 1 to 14).
Phase 2 restores musculoskeletal function (weeks 2 to 8). Phase 3 builds core strength and returns to activity (weeks 8 to 16+).
Phase 1: Immediate post-operative (days 1 to 14)
Passive range of motion (PROM)
Begin PROM at 2 to 5 days post-surgery. Dog on their side, operated leg up gently flex and extend the stifle in a slow bicycle motion. Ten repetitions, 3 times daily.
Full guide: PROM exercises for dogs after TPLO surgery.
Cold packing
Apply ice or a cold pack wrapped in a thin towel to the surgical site for 10 to 15 minutes after each PROM session.
Repeat 3 times daily for at least the first 5 days. Cold packing reduces local inflammation and post-exercise swelling.
Short controlled leash walks
5 to 10 minutes, 2 to 3 times daily from day 10 to 14 onward (after suture removal). Slow pace on a flat, even surface.
Leash only no off-leash time at any stage during restricted recovery.
Massage
Gentle massage of the muscles above and below the stifle joint the quadriceps, hamstrings, and calf muscles improves local circulation and reduces muscle spasm.
Use palm pressure in a circular motion, not surface stroking.
Phase 2: Active weight-bearing (weeks 2 to 8)
Sit-to-stand exercises
Sit-to-stand is the most important active strengthening exercise in TPLO rehabilitation. Ask your dog to sit, then stand, repeatedly.
TPLO Info confirms that sit-to-stand action helps with range of motion in the hindlimb joints and activates the muscles that support the stifle.
Protocol:
- Begin with 5 repetitions, 2 times daily at week 2 to 3
- Progress to 10 to 20 repetitions, 2 to 3 times daily as strength improves
- Ensure the dog sits squarely, not off to one side
- Use a wall on the operated leg's side if needed to prevent kicking the leg out
Progressive leash walk duration
Week 3 to 4: 10 to 15 minutes, 3 times dailyWeek 5 to 6: 15 to 20 minutes, 3 times dailyWeek 7 to 8: 20 to 30 minutes, 2 to 3 times daily
All walks on leash. No running, jumping, or off-leash time.
Warm packs before exercise
After the first 5 post-operative days, apply warm compresses for 5 minutes before each exercise session.
Warmth relaxes muscles and improves local circulation before PROM and active exercises.
Phase 3: Strength building (weeks 6 to 12)
Hydrotherapy (underwater treadmill)
Begin hydrotherapy once the incision is fully healed typically 3 to 4 weeks post-surgery. Water buoyancy reduces joint load by up to 90% while allowing the muscles to work against water resistance.
WM Referrals' post-TPLO physiotherapy guide recommends starting hydrotherapy around week 6, with sessions of 15 to 30 minutes at progressive durations as strength improves.
For the full hydrotherapy and laser therapy guide, see laser therapy for dogs after TPLO surgery.
Balance and proprioception exercises
Begin from weeks 4 to 6 once partial weight-bearing is reliable:
Weight shifting: with the dog standing, gently nudge the hips from side to side to encourage weight transfer between limbs. TPLO Info recommends this once the dog is consistently bearing weight on the surgical limb, typically 3 to 4 weeks post-surgery.
Single leg lifts (contralateral leg): while the dog stands, lift one front or non-surgical hind leg for 10 to 15 seconds. This forces weight onto the operated limb and activates stabilizing muscles. Do not lift the operated leg.
Balance pad or wobble board: progress to standing on a soft or unstable surface from weeks 6 to 8. Begin with seconds of contact and build to 30+ seconds as confidence and strength improve.
Cavalletti poles
Slow stepping over 4 to 5 poles laid flat on the ground at shoulder-width spacing.
Introduced at weeks 6 to 8, this forces controlled hip and stifle flexion, improving range of motion and coordination. Two to four passes per session, 2 to 3 sessions daily.
Incline walking
Gentle uphill walking increases hindlimb muscle load without high joint impact.
WM Referrals recommends slow walks up and down inclines from weeks 6 to 8, starting at 1 to 3 minutes and progressing as tolerated.
Phase 4: Return to full activity (months 3 to 6)
After the 8 to 12 week radiographic recheck confirms adequate osteotomy healing, the surgeon approves progressive return to normal activity.
Madison Veterinary Specialists' rehabilitation guide notes that trotting on leash is allowed after the dog is comfortable with extended walks of 1 hour or more and sit-to-stand exercises.
Activity milestones:
- Month 3: 30 to 45 minute leash walks, light trot on leash
- Month 4: free trotting on leash, gentle play
- Month 5 to 6: off-leash play approved by surgeon, return to normal activity
High-impact activities jumping, ball chasing, agility are reintroduced last, typically at 5 to 6 months, after a final clinical assessment.
For the range of motion exercises covered in this program, see TPLO range of motion exercises for dogs. For the recovery exercises at each stage, see TPLO recovery exercises for dogs.
For the PROM technique guide, see PROM exercises for dogs after TPLO surgery. For when physical therapy begins, see when to start physical therapy after TPLO surgery.
For the full recovery tips overview, see 10 essential TPLO recovery tips for pet owners.
Frequently asked questions
When should TPLO rehabilitation begin?
Rehabilitation begins within days of surgery. PROM starts at 2 to 5 days post-surgery. Cold packing begins on day 1.
Short controlled leash walks begin at 10 to 14 days after suture removal. Formal hydrotherapy and balance exercises begin at 3 to 6 weeks depending on healing.
Can I do all the rehab exercises at home?
Many exercises PROM, sit-to-stand, controlled leash walks, balance nudging, cold and warm packing can be done at home. Hydrotherapy requires a specialist facility.
Balance boards and cavalletti poles require some equipment investment but are achievable at home.
A formal rehabilitation assessment at a certified canine rehab centre is strongly recommended for at least the first few sessions.
How do I know if I'm pushing too hard?
Signs of over-exercise: increased swelling or heat at the surgical site, markedly worse lameness the next day, or the dog refusing to perform the exercise or vocalizing during it.
Reduce exercise intensity immediately and contact your vet. Start each phase at the minimum repetitions and increase only if there is no increase in pain or swelling.
Is hydrotherapy necessary for TPLO recovery?
It is not mandatory but is highly beneficial. Studies show dogs receiving hydrotherapy alongside land-based rehabilitation recover faster and develop better muscle mass than those doing land exercises alone.
If access to a hydrotherapy facility is limited, land-based exercises performed consistently produce good outcomes.
What happens if I skip rehabilitation?
Dogs managed with rest alone after TPLO develop significant muscle atrophy, reduced range of motion, and often persistent lameness. Rehabilitation dramatically improves functional outcomes.
Even a simple home program of PROM, controlled leash walks, and sit-to-stand exercises produces substantially better results than passive rest alone.
Resources
- Veterinary Partner (VIN). Physical Rehabilitation of Dogs Following TPLO. veterinarypartner.vin.com
- TPLO Info. Rehab for Dogs After TPLO Surgery. tploinfo.com
- WM Referrals. Post-Operative Rehabilitation After TPLO. wm-referrals.com
- Madison Veterinary Specialists. TPLO Rehabilitation Home Care Instructions. mvsvets.com
- Vetplayas. TPLO Rehab Exercises: Accelerating Recovery and Restoring Mobility. vetplayas.com
X min read

TPLO Plate Rejection Symptoms in Dogs
TPLO plate rejection is one of the less common but more serious complications that can follow tibial plateau leveling osteotomy surgery.
The term "rejection" is sometimes used loosely distinguishing between true immune-mediated rejection, infection, and implant loosening matters because the treatment differs significantly for each.
Quick answer: True TPLO plate rejection is rare — implants are highly biocompatible. It produces persistent swelling, heat, pain over the plate, and sometimes a draining tract. Infection produces identical symptoms. Contact your vet if lameness worsens or discharge appears weeks to months after surgery.
Key takeaways
- True immune-mediated plate rejection is rare: TPLO plates are made from highly biocompatible titanium or stainless steel
- Symptoms overlap significantly with infection: pain, swelling, heat, and discharge occur in both; bacterial culture distinguishes them
- Infection is the most common implant complication: TPLO infection rates range from 0.8 to 14.3%; true rejection is a small subset
- Signs typically appear weeks to months after surgery: worsening lameness after initial improvement is the classic red flag
- A draining tract (fistula) over the plate is a hallmark sign of implant-associated infection or rejection
- True rejection requires plate removal: once the osteotomy heals (at least 12 weeks), the plate is removed; bone heals without it
What is TPLO plate rejection?
The TPLO plate and screws are made from medical-grade titanium or stainless steel.
These materials are designed to be biologically inert the body should recognize them as neutral foreign material and wall them off without reaction.
Laguna Hills Animal Hospital explains that in some cases, the TPLO plate is rejected by the dog's body because it is perceived as a foreign object.
True immune-mediated rejection occurs when the immune system mounts an inflammatory response against the implant material itself. This is distinct from:
- Periprosthetic infection: bacteria colonize the implant surface and cause chronic infection around the plate; this is far more common than true rejection
- Mechanical failure: the plate bends, breaks, or screws loosen due to excessive force; this is a structural problem, not an immune reaction
- Normal post-surgical inflammation: expected in the first 2 to 3 weeks; should be improving, not worsening
In clinical practice, the distinction between true rejection and low-grade infection is often made by bacterial culture of the fluid or tissue at the site.
True aseptic rejection produces inflammation without bacterial growth; periprosthetic infection produces the same symptoms with positive cultures.
Symptoms of TPLO plate rejection
Dog Discoveries' veterinary reference describes plate rejection as: the knee becomes inflamed and sore around the plate, the dog feels constant pain and irritation, and the dog gets worse rather than better.
Signs of trouble are generally seen weeks to months after surgery rather than in the immediate post-operative period.
Key symptoms to monitor:
Worsening or persistent lameness: a dog that was improving and then regresses, or one whose lameness fails to improve beyond the expected baseline, is showing a key red flag. This is distinct from the expected early post-TPLO lameness that should be progressively improving week by week.
Localized swelling over the plate: visible or palpable swelling directly over the plate site (proximal medial tibia) that does not resolve with rest and is not reducing over time.
Warmth and heat at the surgical site: warmth beyond the first 2 to 3 post-operative weeks suggests ongoing inflammation.
Draining tract (fistula): a small hole in the skin near the surgical site that produces persistent clear, bloody, or purulent discharge. This is a hallmark of implant-associated complications either infection or reaction. Vet Playas confirms persistent drainage or discharge, especially with a foul odor, may indicate infection or plate rejection.
Pain on palpation: the dog reacts to direct pressure over the plate site.
Failure to heal: the dog is not progressing as expected at radiographic rechecks; osteotomy bridging is delayed or absent.
How plate rejection is diagnosed
Clinical examination: systematic palpation of the plate site, assessment of lameness grade, and comparison to expected recovery trajectory.
Radiographs: assess osteotomy healing, implant position, screw integrity, and periimplant bone quality. Periprosthetic bone loss suggests infection or chronic reaction.
Culture and sensitivity: fluid or tissue from the surgical site is cultured to determine whether bacteria are present and which antibiotics are effective. Culture-negative inflammation supports true rejection; culture-positive results confirm infection.
Blood work: elevated inflammatory markers (C-reactive protein, white blood cell count) confirm systemic involvement.
Treatment
For infection (most common implant complication)
Culture-directed antibiotic therapy is initiated. If the osteotomy is not yet healed, the plate must remain in place removing the plate before the osteotomy heals causes the bone segments to lose support.
Targeted antibiotics and local wound management may control infection until healing is sufficient.
If the infection does not resolve with antibiotics, surgical debridement or implant removal (if the bone has healed) may be required.
For the full infection management guide, see TPLO plate infection signs and treatment.
For true aseptic rejection
Plate removal is the definitive treatment. Laguna Hills Animal Hospital confirms that the bone plate must remain in place for at least 12 weeks to allow the bone to heal.
Once healing is confirmed radiographically typically at 10 to 12 weeks the plate can be safely removed.
The bone does not require the plate long-term; it is a scaffold to hold the osteotomy while it heals.
When to contact your veterinarian
Contact your vet if:
- Lameness worsens or plateaus instead of progressively improving
- You notice new swelling, heat, or discharge at the surgical site weeks after surgery
- A draining tract appears at or near the incision
- Your dog shows signs of pain at the plate site on palpation
- Radiographs at rechecks show unexpected findings around the plate or screws
For the implant failure guide, see TPLO implant failure signs and causes. For the plate removal recovery guide, see TPLO plate removal recovery guide.
For the full complications reference, see 15 common complications after TPLO surgery in dogs. For the plate infection article with antibiotic treatment details, see TPLO plate infection signs and treatment.
For when the plate needs to come out due to infection, see when does a TPLO implant need to be removed due to infection.
Frequently asked questions
How common is TPLO plate rejection in dogs?
True immune-mediated rejection is uncommon. TPLO plates are manufactured from highly biocompatible titanium or stainless steel.
The more common implant complication is infection (0.8 to 14.3% of TPLO cases depending on the study), which produces similar symptoms to rejection.
Metal allergy or true rejection accounts for a small subset of these cases.
How do I know if it's plate rejection or infection?
The symptoms overlap significantly. Bacterial culture of fluid from the site distinguishes them: culture-positive means infection; culture-negative inflammation in the right clinical context suggests true rejection.
Both require veterinary evaluation do not attempt to manage either at home.
Can the plate stay in if my dog is rejecting it?
No. If true rejection is diagnosed and the plate is causing ongoing inflammation, it must be removed once the osteotomy has healed sufficiently.
Most dogs do not require the plate after 10 to 12 weeks once the bone has consolidated. Plate removal is a less complex procedure than the original TPLO.
Will my dog need another surgery if the plate is rejected?
Plate removal surgery is typically required if true rejection is confirmed and the osteotomy has healed. This is less invasive than the original TPLO.
In most cases the dog recovers well after plate removal, and long-term outcomes are good.
Can rejection be prevented?
Pre-surgical screening for metal sensitivities can help select the best implant material. Strict aseptic technique during surgery minimizes infection that can mimic rejection.
Activity restriction during recovery reduces mechanical stress on the implant that increases complication risk.
Resources
- Dog Discoveries. Signs of TPLO Plate Rejection in Dogs. dogdiscoveries.com
- Vetplayas. Unveiling TPLO Plate Rejection Symptoms. vetplayas.com
- Laguna Hills Animal Hospital. TPLO Surgery Complications. lhah.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
X min read

How Much Does TPLO Surgery Cost?
TPLO (Tibial Plateau Leveling Osteotomy) is a special surgery used to treat cranial cruciate ligament (CCL) injuries in dogs. By adjusting the tibial plateau angle, TPLO stabilizes the knee joint, allowing for better weight distribution, reducing pain, and improving mobility. It is considered one of the most effective treatments for CCL tears, especially in large or active dogs.
The cost of TPLO surgery can vary widely, usually ranging from $3,500 to $7,000 (or even more). Several factors affect the price, including:
- the location of the veterinary clinic
- the surgeon's expertise
- preoperative diagnostics
- hospitalization
- anesthesia
- post-surgical care
Additional costs may include medications, follow-up visits, rehabilitation, and potential complications.
Specialist hospitals and board-certified surgeons often charge more due to their advanced training and high success rates. Additionally, regional differences in veterinary care costs can affect pricing, making TPLO surgery more expensive in urban areas than in smaller towns.
Factors That Influence TPLO Surgery Costs
Dog’s Size and Weight
Larger dogs need stronger, more durable implants, which raises material costs. They also require higher doses of anesthesia, longer surgeries, and more monitoring during recovery. The complexity of handling a large dog's knee joint makes the surgery more technically challenging, leading to higher fees.
Smaller dogs, while still needing precise surgery, usually have lower implant costs and reduced medication expenses. Veterinary clinics adjust their pricing based on the dog's weight, as it directly impacts the surgery's difficulty, recovery time, and post-operative care, causing variations in overall TPLO surgery costs.
Geographic Location
TPLO surgery costs can vary greatly depending on the clinic's location. In urban areas, prices are usually higher because of increased overhead costs, like facility expenses, staff salaries, and the demand for specialized services. Rural clinics might offer lower prices, but they may not have access to board-certified surgeons or advanced surgical equipment.
Costs also vary between states and countries, affected by regional economic conditions, veterinary licensing fees, and medical supply costs. Pet owners in areas with a high cost of living should expect to pay more, while those in smaller towns might find more affordable options.
Veterinary Clinic’s Pricing Strategy
The type of veterinary clinic also affects TPLO surgery costs. Corporate-owned clinics often have set prices, which may be higher due to overhead and administrative expenses. Private practices might offer more flexible pricing but can also charge higher rates if they have a strong reputation.
Clinics with high demand, advanced equipment, and top-notch facilities usually charge more. Some hospitals include follow-up care in their pricing, while others list these costs separately, impacting the total amount pet owners need to pay. Choosing between different clinic types can significantly influence the final surgery bill.
Severity of the Injury
The extent of ligament damage directly impacts TPLO surgery costs. A partial tear might need less surgical work and result in lower costs, while a complete rupture usually requires more complex reconstruction.
Additional issues like meniscus tears, osteoarthritis, or joint inflammation make the surgery more difficult and increase post-operative care, raising overall expenses.
In severe cases, longer hospital stays, extra imaging, and specialized rehabilitation may be necessary, further increasing costs. Veterinary surgeons evaluate each dog's condition individually, deciding on the level of intervention needed and adjusting the treatment plan as necessary.
Necessary Implants and Materials Used
The type and quality of implants, plates, and screws used in TPLO surgery can greatly affect costs. High-grade titanium or stainless steel implants are more expensive but offer better durability and a lower risk of complications. Customized implants, made for larger or more active dogs, also increase costs due to their specialized design.
Some clinics might use generic implants to keep costs down, while others choose premium, brand-name materials for better long-term results. The choice of implants impacts not only the price but also post-surgery stability, healing time, and overall success rates.
Surgeon’s Expertise and Qualifications
Board-certified veterinary surgeons usually charge more than general veterinarians because of their specialized training and higher success rates. These experts have a lot of experience in orthopedic procedures, which leads to better surgical results.
While general veterinarians can perform TPLO surgery at a lower cost, they might not have the same level of expertise, which could affect recovery and complication rates.
Some pet owners choose experienced surgeons despite the higher cost, focusing on safety, precision, and long-term joint health for their dogs. Selecting a skilled surgeon often results in faster recovery and fewer post-surgical problems.
Regional Cost Comparison
The cost of TPLO surgery varies significantly by country and location due to differences in veterinary fees, cost of living, and availability of specialized surgeons. Below is a general comparison of TPLO surgery costs in different regions:
| Region | Average Cost Range (Per Knee) | Key Factors Affecting Cost |
|---|---|---|
| United States | $3,500 – $10,000 | Higher costs in major cities like New York and Los Angeles due to demand and overhead; rural clinics may charge less. |
| Canada | $3,500 – $8,000 | Urban centers like Toronto and Vancouver have higher fees; fewer specialists in remote areas may drive up costs. |
| United Kingdom | £3,000 – £6,500 ($3,800 – $8,200) | London and other metropolitan areas charge more; the availability of pet insurance can impact affordability. |
| Australia | AUD 4,000 – AUD 9,000 ($2,600 – $5,900) | Higher in cities like Sydney and Melbourne; regional clinics may offer lower rates but limited specialist availability. |
Urban clinics usually charge more because of higher operating costs and greater demand for specialist services. In contrast, rural clinics often have lower prices but may not have board-certified surgeons.
Additionally, pet insurance can greatly affect out-of-pocket costs, as some policies cover part or all of the TPLO surgery expenses, depending on the region and the plan.
Cost Variations by Dog Size
The cost of TPLO surgery varies based on the size of the dog, mainly because of differences in implant needs, anesthesia dosage, and surgical complexity. Here's a breakdown of approximate costs by weight category:
- Small Dogs (<40 lbs) – Approximately $4,450
Smaller dogs need smaller implants and less anesthesia, making their surgery a bit less complex. However, the cost is similar to larger dogs because specialized skills and equipment are still necessary. - Medium Dogs (40–70 lbs) – Approximately $4,450
Dogs in this weight range usually need standard-sized TPLO plates, keeping costs similar to small dogs. The surgical method and recovery care are also similar. - Large Dogs (70–100 lbs) – Varies Based on Plate Size
Costs increase for larger dogs due to the need for stronger, larger TPLO plates. Some clinics charge extra for custom implants that offer better durability and long-term joint support. - Extra-Large Dogs (>100 lbs) – $4,450 to $5,950
Giant breeds require reinforced implants, more anesthesia, and longer surgery time, which raises the overall cost. Post-surgical care and rehabilitation may also be more intensive, further affecting expenses.
Larger dogs often have higher long-term care costs, including pain management and physical therapy, making post-operative planning crucial for their recovery.
What’s Included in the TPLO Surgery Cost?
The total cost of TPLO surgery usually includes several components to ensure a safe procedure, proper recovery, and post-operative care. Here is a breakdown of what is typically included:
- Pre-Surgical Bloodwork: Before surgery, veterinarians perform blood tests to check the dog’s overall health, making sure they can safely handle anesthesia and recover without issues.
- X-Rays for Diagnosis and Surgical Planning: Preoperative X-rays are needed to confirm the severity of the CCL tear and determine the exact tibial angle for surgical correction. Post-surgical X-rays may also be taken to ensure the implant is properly placed.
- Anesthesia and Surgical Monitoring: TPLO surgery requires general anesthesia, which is carefully given and monitored throughout the procedure. The cost includes oxygen support, IV fluids, and continuous tracking of vital signs to ensure the dog's safety.
- Actual TPLO Surgical Procedure: This includes the orthopedic surgery itself, where the surgeon makes a precise bone cut, repositions the tibial plateau, and secures it with plates and screws.
- Post-Operative Pain Medications: Pain management is crucial for recovery. The cost typically includes anti-inflammatory drugs, antibiotics, and pain relievers to prevent infection and discomfort.
- Follow-Up Visits and Check-Ups: Most clinics include at least one or two post-surgery appointments to monitor healing and assess the dog's progress. Additional visits may be needed if there are complications.
- Physical Therapy or Rehabilitation Sessions (If Included): Some veterinary clinics offer rehabilitation programs like hydrotherapy or therapeutic exercises to help improve recovery. However, not all clinics include these services in the base surgery cost.
Each clinic has its own pricing structure, so it's important to check what is included to avoid unexpected costs during recovery.
Hidden or Unexpected Costs of TPLO Surgery
While TPLO surgery is highly effective, some additional expenses may arise depending on the dog's recovery process and the clinic’s pricing structure.
- Emergency Care for Complications: Although rare, complications such as implant loosening, poor bone healing, or excessive swelling may require extra treatment. Even with lower infection risks using Simini Protect Lavage, issues like implant irritation or allergic reactions might still occur, needing additional veterinary care.
- Additional Pain Management Medications: While most TPLO surgery packages include standard pain medications, some dogs might need stronger or longer-term pain relief, especially if they have pre-existing joint issues or heal slowly.
- Post-Surgery X-Rays for Recovery Monitoring: Some veterinary clinics charge separately for follow-up X-rays at 6-8 weeks post-surgery to confirm proper bone healing. If not included, these can cost $150 to $300 per session.
- Rehabilitation and Therapy (If Not Included in Base Cost): Hydrotherapy, laser therapy, or guided rehabilitation exercises can enhance recovery but may add $50 to $100 per session.
With advanced infection control measures like Simini Protect Lavage, unexpected costs related to post-operative infections are minimized, making TPLO recovery more predictable and reducing financial uncertainties.
Payment and Financing Options for TPLO Surgery
TPLO surgery is a significant financial commitment, but various payment and financing options can help manage the cost. Pet owners should explore different ways to reduce financial strain while ensuring their dog gets the necessary treatment.
- Flexible Payment Plans Offered by Some Clinics: Many veterinary clinics offer in-house payment plans, allowing owners to pay in installments instead of a lump sum. These plans typically require a deposit upfront, with the remaining balance spread over several months.
- Discounts for Upfront Payments: Some clinics provide discounts for paying in full before the surgery. This option can help save money, as interest fees from financing plans are avoided. It's worth asking if a prepayment discount is available.
- Third-Party Financing or Personal Loans: Veterinary financing companies like CareCredit and Scratchpay offer low-interest or interest-free short-term loans for pet medical expenses. Personal loans or credit cards can also be an option, but they may come with higher interest rates.
- Pet Insurance Coverage Considerations: Not all pet insurance plans cover TPLO surgery. Policies that include orthopedic conditions or CCL injuries may reimburse a portion of the cost. Companies like Trupanion, Healthy Paws, and Embrace often cover TPLO surgery, but pre-existing conditions are typically excluded. Pet owners should check waiting periods and coverage limits before proceeding.
Discussing these options with the veterinary clinic can help find the best financial solution for your dog’s surgery.
Additional Considerations Before Committing to TPLO
Before proceeding with TPLO surgery, it’s important to consider potential risks, unexpected costs, and pricing differences between clinics to ensure you are fully prepared for the financial and medical aspects of the procedure.
Risks of Unexpected Complications and Added Cost
While TPLO surgery has a high success rate, complications such as implant failure, delayed bone healing, or improper post-operative care can lead to additional expenses. Some dogs may require extended rehabilitation, extra pain management, or revision surgery, increasing costs beyond the initial estimate.
While infection risks are lower when using Simini Protect Lavage, other factors like poor post-op care or underlying health conditions may still affect recovery.
Comparing Quotes from Different Veterinary Clinics
Prices for TPLO surgery can vary significantly between clinics based on location, surgeon expertise, and included services. It’s recommended to get multiple quotes, ensuring you compare what’s included, such as pre-op tests, X-rays, follow-up visits, and rehabilitation. Some clinics offer payment plans or discounts, making it essential to explore all financial options before committing.
Taking the time to understand potential costs and evaluate different providers can help ensure the best possible care for your dog while managing expenses effectively.
Is TPLO Worth the Cost? Long-Term Financial Benefits
While TPLO surgery is expensive, it is often a cost-effective investment in a dog’s long-term health. Choosing not to proceed with TPLO can lead to chronic pain, progressive arthritis, and long-term medical expenses that may exceed the cost of surgery.
Cost of Not Doing TPLO
Without surgical intervention, a torn cranial cruciate ligament (CCL) leads to joint instability, inflammation, and arthritis progression. Managing these issues requires lifelong pain medications, anti-inflammatory drugs, physical therapy, and joint supplements—costs that add up over time. Many dogs that do not undergo TPLO eventually experience injury in the opposite knee, further increasing medical expenses.
TPLO as an Investment in Mobility and Health
TPLO surgery restores knee stability, reduces pain, and allows for full weight-bearing movement, enabling dogs to return to normal activity levels. Unlike conservative management, TPLO prevents further joint deterioration, reducing the need for ongoing medical intervention.
How TPLO Saves Money in the Long Run
While conservative treatments like bracing, pain management, and therapy may seem cheaper initially, they often require years of continuous care.
TPLO, on the other hand, is a one-time surgical cost that provides a permanent solution, minimizing future expenses and improving a dog’s quality of life.
Read more about:
TPLO Surgery for Older Dogs: Is It a Worthwhile Option?
Post-Surgery Recovery After TPLO in Dogs
Common Myths About TPLO Surgery Explained
Long-Term Outcomes of TPLO Surgery
What is Bilateral TPLO Surgery?
Conclusion
TPLO surgery is a major financial commitment, with costs usually ranging from $3,500 to $10,000 per knee. This price covers pre-surgery diagnostics, anesthesia, the surgery itself, post-operative care, and follow-up visits. However, there may be extra costs for rehabilitation, post-surgery X-rays, and emergency care for any complications.
Before deciding on TPLO, pet owners should think about their dog's size, the severity of the injury, the surgeon's expertise, and their location, as these factors significantly affect the total cost. Comparing quotes from different clinics, checking pet insurance coverage, and looking into financing options can help manage expenses.
Although the initial cost is high, TPLO offers a long-term solution, lowering the risk of arthritis and removing the need for lifelong pain management. In the long run, it is often more cost-effective than conservative treatments. Investing in TPLO means better mobility, pain relief, and an improved quality of life for your dog.
FAQs
How much does TPLO surgery cost on average?
The average cost of TPLO surgery ranges from $3,500 to $10,000 per knee, depending on clinic location, surgeon expertise, diagnostic tests, anesthesia, and post-operative care. Urban clinics and specialty hospitals tend to charge more. Additional costs may arise from follow-up visits, rehabilitation, and pain management, which are sometimes not included in the base price.
How much does it cost to remove a TPLO plate?
The cost of TPLO plate removal varies depending on factors such as the veterinary clinic, location, and the complexity of the procedure. On average, the cost ranges from $800 to $2,500. This typically includes anesthesia, surgical fees, and post-operative care. Plate removal is usually recommended only if complications arise, such as infection, irritation, or persistent pain. Some clinics may offer a lower cost if the removal is performed at the same facility where the TPLO surgery was originally done. Always consult your veterinarian for an accurate estimate based on your dog's specific case.
Why is TPLO surgery so expensive?
TPLO surgery is costly due to its complex nature and specialized equipment. It requires advanced surgical skills, high-quality implants, general anesthesia, and extensive post-operative care. Additionally, board-certified veterinary surgeons charge more due to their expertise and success rates. Factors like pre-surgical diagnostics, follow-up X-rays, and rehabilitation therapy further increase the total cost.
Can pet insurance cover TPLO surgery?
Yes, some pet insurance plans cover TPLO surgery, but coverage depends on the policy terms and pre-existing condition exclusions. Companies like Trupanion, Healthy Paws, and Embrace often reimburse part of the cost if the injury was not diagnosed before the policy started. Owners should check waiting periods, deductibles, and reimbursement limits before relying on insurance.
Are there cheaper alternatives to TPLO surgery?
Alternatives include lateral suture stabilization (Extracapsular Repair) and TTA (Tibial Tuberosity Advancement), which may be cheaper but are less effective for larger, active dogs. Conservative management with medications, weight control, and bracing can temporarily relieve symptoms but does not fully restore joint function and may lead to long-term arthritis.
What are the hidden costs of TPLO?
Hidden costs may include post-surgical X-rays ($150–$300 per session), extended pain management, rehabilitation therapy ($50–$100 per session), and emergency care for complications. While infection risks are lower with Simini Protect Lavage, some dogs may still require additional medications or follow-up procedures, adding to the overall cost.
How can I save money on TPLO surgery?
Pet owners can save money by comparing quotes from different clinics, asking about payment plans, checking pet insurance coverage, and looking for upfront payment discounts. Some veterinary schools offer lower-cost surgeries performed by supervised students. Financing options like CareCredit and Scratchpay also help spread out payments.
Does the cost of TPLO include physical therapy?
Not always. Some veterinary clinics bundle rehabilitation sessions in the total cost, but many charge separately. Physical therapy, including hydrotherapy, laser therapy, and therapeutic exercises, can cost $50 to $100 per session. It is essential to confirm with the clinic whether post-operative rehab is included.
Is TPLO surgery a one-time cost, or will my dog need additional procedures?
TPLO surgery is generally a one-time procedure, but additional costs may arise for post-surgery check-ups, pain management, and rehabilitation. In rare cases, complications like implant failure or infections may require revision surgery, adding to the expenses. However, with proper post-operative care, most dogs recover well without further surgical intervention.
X min read

Arthrex TPLO Weight Chart Explained
After TPLO surgery, one of the most important questions owners and rehabilitation teams ask is: how much weight should my dog be putting on the operated leg right now?
The Arthrex TPLO weight chart provides a structured, week-by-week answer to that question, giving both surgeons and owners a shared reference point for tracking recovery progress.
Quick answer: The Arthrex TPLO weight chart tracks the percentage of body weight a dog bears on the operated leg at each recovery stage — from 0 to 10% in the first weeks to 100% by 8 to 12 weeks post-surgery.
Key takeaways
- The weight chart tracks weight-bearing percentage at each stage, from 0 to 10% in weeks 1 to 2 to 100% by weeks 8 to 12
- It is a rehabilitation monitoring tool, not a surgical planning tool: the rotation chart governs intraoperative correction; this tracks recovery
- Progression must be gradual: advancing too fast risks implant failure; too slow leads to atrophy and stiffness
- The chart integrates with clinical examination: 8-week radiographs, gait assessment, and muscle mass evaluation are considered alongside chart milestones
- Individual dogs vary: the chart provides population-level benchmarks; your surgeon's instructions take precedence
- The chart is used alongside the plate size and rotation charts: together they form the Arthrex TPLO system framework
What the weight chart is and what it is not
The Arthrex TPLO weight chart is a post-operative rehabilitation tool.
It shows recommended weight-bearing percentages at specific time points after surgery a reference guide that helps veterinarians, rehabilitation therapists, and owners track whether a dog's recovery is progressing appropriately.
It is not the same as the rotation chart (which guides intraoperative tibial rotation) or the plate size chart (which guides implant selection before surgery).
These three charts together form the Arthrex TPLO planning and monitoring system.
For the rotation chart guide, see Arthrex TPLO rotation chart explained. For the plate overview, see Arthrex TPLO plate overview and use.
Understanding the weight-bearing percentages
The chart uses percentage of body weight as its unit of measurement.
This is a more useful measure than time alone because it relates directly to the mechanical load placed on the healing osteotomy and implant.
0 to 10% weight-bearing (weeks 1 to 2): toe-touching and minimal contact only. The dog is not actively loading the leg during this phase. Bathroom trips on leash are permitted, but no sustained weight-bearing.
10 to 30% (weeks 2 to 4): the dog begins placing meaningful weight on the leg during slow leash walks. This corresponds to the short 5 to 10 minute leash walks prescribed at this stage. The healing osteotomy is starting to consolidate but is not yet ready for full load.
30 to 60% (weeks 4 to 8): progressive loading during longer walks, sit-to-stand exercises, and early rehabilitation activities. Most dogs are visibly improving in gait symmetry during this phase.
60 to 100% (weeks 8 to 12): full weight-bearing is approached and typically achieved after the radiographic recheck at week 8 confirms adequate osteotomy healing. Activity levels increase under veterinary guidance.
How to use the chart in practice
As a clinical benchmark
Surgeons use the weight chart to assess whether a dog is progressing as expected at each recheck visit.
A dog that is well below the expected weight-bearing percentage for their stage may have inadequate pain control, implant complications, or infection.
A dog exceeding the expected percentage may be at risk of mechanical overload if the bone has not yet consolidated enough to tolerate the load.
As an owner reference
Owners are not expected to measure exact weight-bearing percentages at home this requires force plate analysis or pressure-sensitive walkway equipment.
The chart provides a conceptual framework: early recovery shows only toe-touching; by weeks 4 to 6, the dog places meaningful weight during walks; by weeks 10 to 12, gait symmetry improves steadily.
What affects weight-bearing progress
Bone healing rate: younger dogs and smaller breeds typically consolidate the osteotomy faster than older or giant breed dogs.
Pain control: inadequate analgesia is the most common cause of delayed weight-bearing. A dog in pain will protect the operated leg regardless of how well the surgery went. Contact your surgeon if your dog is significantly below expected weight-bearing benchmarks.
Muscle atrophy: dogs that enter surgery with significant muscle atrophy from prolonged pre-surgical lameness progress more slowly and benefit most from structured rehabilitation.
Body weight: heavier dogs place more absolute load on the healing osteotomy at any given percentage. This is one reason weight management is emphasized throughout the TPLO recovery period.
Rehabilitation: dogs receiving structured rehabilitation (PROM, sit-to-stand, hydrotherapy) consistently achieve better weight-bearing progression than those managed with rest alone.
When the chart says one thing and your dog does another
The weight chart represents population-level expectations. Individual dogs routinely deviate from the expected timeline for reasons that are often identifiable and manageable.
If your dog is significantly under-progressing: contact your surgeon to rule out infection, implant problems, or inadequate pain management before assuming slow healing.
If your dog appears to be weight-bearing well ahead of schedule: this does not mean the osteotomy is healed faster than expected.
Radiographic confirmation at week 8 is still required regardless of how the dog looks clinically. Apparent early function does not mean the bone has consolidated enough to withstand full unrestricted activity.
For the full weight-bearing recovery timeline guide, see how soon can a dog walk after TPLO surgery.
For the rotation chart that is used alongside the weight chart in the Arthrex system, see Arthrex TPLO rotation chart explained.
For the plate size chart used in conjunction with both, see TPLO plate size chart explained.
Frequently asked questions
Is the Arthrex TPLO weight chart the same as a standard recovery timeline?
Not exactly. A recovery timeline tells you what activities to do and avoid at each stage.
The weight chart specifically tracks how much weight the dog is placing on the operated leg at each stage, expressed as a percentage of body weight.
The two are related but provide different information.
Can I measure my dog's weight-bearing at home?
Not precisely. Force plate and pressure-sensitive walkway systems that measure actual weight distribution require specialist veterinary equipment.
At home, you can observe whether the dog is toe-touching, placing the foot flat, and walking with increasing symmetry which approximates the chart's progression categories without exact percentages.
What if my dog refuses to use the leg at all two weeks after TPLO?
Non-weight-bearing at two weeks is a warning sign. TPLO Austin confirms that if your pet is not bearing weight within two weeks of surgery, contact your veterinarian.
The most common causes are inadequate pain control, infection, or implant positioning concerns all of which are addressable if caught early.
Do all TPLO surgeons use the Arthrex weight chart?
No. The Arthrex system is one of the two major TPLO implant systems in the US (alongside Synthes). Surgeons using Synthes implants use Synthes-specific planning tools.
Some surgeons use individualized rehabilitation protocols rather than system-specific charts. The underlying recovery milestones are similar regardless of which chart or system is used.
What happens at the 8-week recheck in terms of weight-bearing?
At the 8-week recheck, radiographs assess osteotomy healing. If healing is adequate, the surgeon approves increased activity typically 20 to 30 minute leash walks and the beginning of return-to-normal activity.
The weight chart at this point expects the dog to be approaching or achieving 100% weight-bearing on the operated leg.
Resources
- Arthrex Veterinary. TPLO Surgical Technique. arthrex.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com
- TPLO Austin. Step 6: TPLO Surgery Recovery. tploaustin.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
X min read
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Let's take your infection control to the next level
Watch these videos!
Step #1
Getting Ready
Ensuring a clean surgical field starts with proper skin preparation. This video demonstrates the best practices for:
- Shaving the patient – Achieving a close, even shave while minimizing skin irritation
- The Dirty Scrub – The initial skin prep step to remove surface debris and reduce bacterial load before the sterile scrub.
Following these techniques helps reduce infection risk and improve surgical outcomes. Watch the video to see how it’s done effectively!
Step #2
Reduce Your Risks
Many surgeons are shocked to find out that their patients are not protected from biofilms and resistant bacteria when they use saline and post-op antibiotics.
That’s Where Simini Comes In.
Why leave these risks and unmanaged? Just apply Simini Protect Lavage for one minute. Biofilms and resistant bacteria can be removed, and you can reduce two significant sources of infection.
Step #3
Take the Course
Preventing surgical infections is critical for patient safety and successful outcomes. This course covers:
- Aseptic techniques – Best practices to maintain a sterile field.
- Skin prep & draping – Proper methods to minimize contamination.
- Antibiotic stewardship – When and how to use perioperative antibiotics effectively.
Stay up to date with the latest evidence-based protocols. Click the link to start learning and earn CE credits!

Things to know

TPLO
5 min read
TPLO Plate Removal Cost Explained
Learn about TPLO plate removal cost, factors affecting pricing, and what to expect during recovery after surgery.
When your dog undergoes a TPLO surgery, you may wonder about the cost of removing the TPLO plate later. TPLO plate removal cost can vary widely depending on several factors. Understanding these costs helps you prepare financially and know what to expect for your pet's care.
This article explains what TPLO plate removal involves, the typical price range, factors influencing cost, and recovery tips. You will learn how to plan for this procedure and ensure your dog’s health and comfort throughout the process.
What is TPLO plate removal surgery?
TPLO plate removal surgery is a procedure to take out the metal plate used in Tibial Plateau Leveling Osteotomy (TPLO) surgery. This plate stabilizes your dog’s knee after a ligament injury. Sometimes, removal is needed due to pain, infection, or after healing.
Not all dogs require plate removal. Your vet will decide based on symptoms and X-rays. The surgery involves anesthesia, incision, plate removal, and closing the site.
- Purpose of removal: The plate may be removed if it causes discomfort, infection, or irritation to surrounding tissues, improving your dog’s comfort.
- Surgical process: The vet reopens the original incision site to carefully remove the plate and screws, minimizing damage to bone and soft tissue.
- Timing considerations: Removal usually happens months after the initial TPLO once the bone has fully healed and is stable without the plate.
- Risks involved: Like any surgery, risks include infection, anesthesia complications, or delayed healing, which your vet will discuss beforehand.
Understanding the surgery helps you prepare for the cost and recovery your dog will face.
How much does TPLO plate removal cost?
TPLO plate removal cost generally ranges from $800 to $2,500 in the United States. The price depends on your location, veterinary clinic, and complexity of the surgery. This estimate includes anesthesia, surgeon fees, and post-operative care.
Knowing the cost range helps you budget and ask your vet for a detailed estimate before scheduling the procedure.
- Typical price range: Most clinics charge between $800 and $2,500, with an average around $1,500 depending on factors like region and clinic type.
- Geographic variation: Costs tend to be higher in urban areas or specialty hospitals compared to rural clinics due to overhead expenses.
- Clinic type impact: Board-certified surgeons or specialty hospitals may charge more than general practices due to expertise and equipment.
- Additional fees: Pre-surgical blood work, X-rays, medications, and follow-up visits may add to the total cost beyond the surgery itself.
Always ask your veterinary team for a full cost breakdown to avoid surprises.
What factors influence TPLO plate removal cost?
Several factors affect the final cost of TPLO plate removal. These include your dog’s size, health, and the complexity of the surgery. Understanding these helps you anticipate expenses and discuss options with your vet.
Each case is unique, so costs can vary even within the same clinic.
- Dog’s size and weight: Larger dogs may require longer surgery time and more anesthesia, increasing overall cost compared to smaller dogs.
- Complications during surgery: If the plate is difficult to remove due to bone overgrowth or infection, surgery time and cost may increase.
- Pre-existing health conditions: Dogs with other health issues may need additional tests or monitoring, adding to the price.
- Post-operative care needs: Extended pain management, physical therapy, or wound care can raise the total cost after surgery.
Discuss these factors with your vet to understand how they apply to your dog’s situation.
Is TPLO plate removal always necessary?
TPLO plate removal is not always required. Many dogs live comfortably with the plate permanently. Your vet will recommend removal only if there are specific problems like pain or infection.
Knowing when removal is needed helps you avoid unnecessary surgery and costs.
- No symptoms present: If your dog shows no discomfort or mobility issues, plate removal is usually not recommended.
- Signs of irritation: Persistent swelling, pain, or lameness near the plate may indicate removal is needed.
- Infection risk: If the plate site becomes infected and does not respond to antibiotics, removal may be necessary to heal.
- Bone healing status: Removal is only done after the bone has fully healed and is stable without the plate.
Regular check-ups help your vet decide if plate removal is the best option for your dog.
What should I expect during recovery from TPLO plate removal?
Recovery from TPLO plate removal typically takes 4 to 8 weeks. Your dog will need rest, limited activity, and pain management. Following your vet’s instructions is key to a smooth recovery.
Proper care reduces risks of complications and helps your dog return to normal activity safely.
- Restricted activity: Limit running, jumping, and stairs for several weeks to allow the surgical site to heal properly.
- Pain control: Your vet will prescribe pain medications to keep your dog comfortable during recovery.
- Wound care: Keep the incision clean and dry, and watch for signs of infection like redness or discharge.
- Follow-up visits: Regular check-ups ensure healing is on track and allow your vet to adjust care as needed.
Patience and careful monitoring help your dog heal well after plate removal surgery.
How can I prepare financially for TPLO plate removal?
Preparing financially for TPLO plate removal involves understanding costs, checking pet insurance, and discussing payment options with your vet. Planning ahead reduces stress when your dog needs surgery.
Being proactive helps you provide the best care without unexpected financial burden.
- Get a detailed estimate: Ask your vet for a full cost breakdown including surgery, medications, and follow-ups before scheduling.
- Check pet insurance: Review your policy to see if TPLO plate removal or related care is covered to offset expenses.
- Set aside savings: Having an emergency fund for pet health helps cover unexpected costs without delay.
- Discuss payment plans: Many clinics offer financing or payment plans to spread out the cost of surgery over time.
Financial readiness ensures you can focus on your dog’s recovery without worry.
What are the risks and complications of TPLO plate removal?
Like any surgery, TPLO plate removal carries risks such as infection, anesthesia reactions, or delayed healing. Knowing these helps you watch for problems and act quickly if needed.
Your vet will explain risks and how to minimize them before surgery.
- Infection risk: The surgical site can become infected, requiring antibiotics or further treatment to heal properly.
- Anesthesia complications: Dogs may react to anesthesia with breathing or heart issues, though this is rare with proper monitoring.
- Delayed bone healing: Removing the plate too early or surgical trauma can slow bone healing, causing pain or instability.
- Soft tissue damage: Nearby muscles or nerves may be injured during surgery, leading to temporary or permanent issues.
Careful surgical technique and post-op monitoring reduce these risks significantly.
Conclusion
TPLO plate removal cost varies widely but typically ranges from $800 to $2,500 depending on many factors. Understanding what the surgery involves, when it is needed, and how to prepare financially helps you provide the best care for your dog.
Discuss all concerns with your vet and follow recovery instructions closely. Proper planning and care ensure your dog heals well and stays comfortable after TPLO plate removal.
What is the average cost of TPLO plate removal?
The average cost of TPLO plate removal ranges from $800 to $2,500 depending on location, clinic, and complexity of the surgery.
Does pet insurance cover TPLO plate removal?
Some pet insurance plans cover TPLO plate removal if it is medically necessary; check your policy details and pre-authorization requirements.
How long does recovery take after plate removal?
Recovery usually takes 4 to 8 weeks with restricted activity and pain management to ensure proper healing.
Is TPLO plate removal painful for dogs?
Dogs may experience some pain after surgery, but pain medications prescribed by your vet help keep them comfortable during recovery.
Can all dogs have their TPLO plates removed?
Not all dogs need plate removal; it depends on symptoms, healing status, and vet recommendation based on individual cases.

TPLO
5 min read
Dog Leg Shaking After TPLO Surgery: Causes & Care
Learn why your dog may shake its leg after TPLO surgery, what to expect during recovery, and how to support healing safely.
Seeing your dog's leg shake or tremble after TPLO surgery is alarming. In most cases, it is a completely normal part of recovery.
In some cases, it signals a problem that needs attention. Knowing the difference and knowing what to watch for reduces unnecessary worry and helps you catch real complications early.
Quick answer: Leg shaking after TPLO is usually from muscle weakness, nerve recovery, pain, or residual anesthesia. TPLO Info confirms this is normal. Call your vet if shaking worsens, comes with fever or swelling, or persists beyond 2 to 3 weeks.
Key takeaways
- Leg shaking immediately after TPLO is most often from residual anesthesia, cold, or pain; TPLO Info confirms this is normal
- Muscle weakness is the most common ongoing cause: muscles around the knee need weeks of rehab to recover strength
- Nerve recovery causes tremors as disrupted signals re-establish; this resolves over weeks to months
- Inadequate pain control is a key contributing factor: shaking that worsens or persists often means current pain medication is insufficient
- Cold and hypothermia after surgery cause shivering that can mimic leg-specific shaking small dogs and lean breeds are most susceptible
- Warning signs: shaking with fever, surgical site swelling, discharge, worsening lameness, or refusal to bear weight warrants a vet call
Why do dogs' legs shake after TPLO surgery?
Residual anesthesia effects (first 24 to 48 hours)
The most common reason dogs shake immediately after surgery is residual anesthesia. As anesthetic drugs wear off, the body compensates by increasing muscle activity to generate heat this produces shivering and trembling.
TPLO Info explains that once anesthesia wears off, the dog's body induces heat by contracting muscles.
This side effect typically resolves within 12 to 24 hours, though some dogs may tremble for a few days.
Nausea is another anesthesia side effect that produces shaking. A dog that is shaking and yawning or repeatedly swallowing is likely experiencing post-anesthetic nausea.
Muscle weakness and atrophy
TPLO surgery involves cutting through and retracting the muscles surrounding the tibial osteotomy site. These muscles are weak immediately after surgery and require weeks of progressive rehabilitation to regain their pre-surgical strength.
Weak muscles produce involuntary tremors when asked to support body weight or during movement especially on an uneven surface, during transitions between positions, or after brief walks.
This type of shaking is most visible when the dog is standing or trying to move, and improves progressively as rehabilitation exercises build muscle mass.
Dr. Altman on JustAnswer confirms: muscles are disrupted during the TPLO procedure, and there will be a period of healing and weakness that can include muscle spasms.
Massage and warm compresses help, and PROM exercises are beneficial.
Nerve recovery
The surgical procedure disrupts nerves around the tibial osteotomy site and the surrounding soft tissues.
As these nerves regenerate and re-establish normal signal pathways, they can produce involuntary muscle twitches and tremors similar to the sensation of a leg "falling asleep" in humans.
Nerve-related shaking typically affects the area distal to the surgical site and may be more noticeable at certain times of day or after periods of rest.
It is a normal healing process that can continue for weeks to months as nerve regeneration proceeds.
Pain and discomfort
Pain is a significant driver of leg trembling after TPLO. The body responds to pain by increasing muscle tension and guarding the affected area, which can manifest as visible shaking.
Pets Care notes that if shaking is accompanied by shallow breathing, reluctance to move, a distant or glazed look, or loss of appetite, inadequate pain control is likely.
Contact your veterinarian promptly if you suspect your dog's prescribed medications are not adequately controlling pain.
Cold and hypothermia
Small dogs and lean breeds lose body heat rapidly after surgery. Both the surgical room and recovery ward are cooler than most homes, and sedated dogs cannot thermoregulate effectively.
Whole-body or leg-specific shivering after surgery is often simply the dog being cold.
Ensure your dog has a warm, draft-free recovery area. Soft bedding and a light blanket (not heated pads, which risk contact burns on sedated dogs) help restore body temperature.
Anxiety and stress
Major surgery is a stressful experience.
Being in an unfamiliar environment, wearing an E-collar, restricted movement, and the general disruption of normal routine all cause stress that can manifest as trembling or restlessness.
This type of shaking is typically whole-body rather than isolated to the leg, and improves as the dog settles into a home routine.
How to help a dog with post-TPLO leg shaking
Warm, quiet recovery space: create a confined, comfortable, draft-free area with soft bedding away from household noise and activity.
Ensure pain medication is given on schedule: pain medications prescribed by your surgeon should be given at the prescribed times. Do not skip doses consistent blood levels prevent pain spikes that trigger shaking.
Gentle massage: massaging the muscles above and below the knee reduces muscle spasm and improves local circulation. Dr. Altman recommends massage to reduce spasms in the post-TPLO leg.
Warm compresses: after the first 5 days (when ice packs are used), warm compresses before PROM exercises relax tight muscles and reduce tremors.
Progressive rehabilitation: muscle weakness resolves with structured rehabilitation. As muscles strengthen through controlled exercises, trembling decreases. See TPLO rehab exercises for dogs for the full rehabilitation guide.
When to contact your veterinarian
Contact your vet if leg shaking is accompanied by:
- Fever or lethargy
- Increased swelling, redness, or discharge at the surgical site
- Worsening lameness or sudden refusal to bear any weight
- Muscle tremors that are severe, rhythmic, or involve the whole body (which could indicate neurological causes unrelated to TPLO)
- No improvement in shaking after 2 to 3 weeks despite adequate pain management
For the complete TPLO recovery guide, see what to expect after TPLO surgery in dogs. For incision and infection warning signs, see TPLO incision infection symptoms and prevention.
For the lameness reference guide that helps distinguish shaking from other post-TPLO problems, see lameness after TPLO surgery in dogs.
For pain management guidance, see dog whining after TPLO surgery: causes and care.
Frequently asked questions
How long does leg shaking last after TPLO surgery?
Anesthesia-related shaking resolves within 12 to 48 hours. Shaking from muscle weakness and nerve recovery typically decreases over 2 to 8 weeks as rehabilitation progresses.
Mild intermittent trembling during activity may persist for up to 3 months in dogs with significant muscle atrophy before surgery.
Is my dog in pain if their leg is shaking?
Possibly. Pain is one of the causes of post-TPLO shaking.
Signs that pain is contributing: the dog refuses to bear weight, has a glazed or distant expression, breathes shallowly at rest, or stops eating.
If you suspect inadequate pain control, contact your veterinarian to discuss adjusting the medication protocol.
My dog's leg shakes only when they stand up. Is that normal?
Yes. Shaking during transitions lying to standing, or during early walking is typical of muscle weakness after TPLO. The muscles are not yet strong enough to support smooth, stable movement against gravity.
This improves progressively with structured rehabilitation.
Should I restrict my dog's activity more if they're shaking?
Strict rest is already required for TPLO recovery. The short controlled leash walks that are prescribed are beneficial they stimulate muscle recovery without stressing the osteotomy.
Do not add more exercise because of shaking, but also do not restrict below the prescribed protocol.
Can I give my dog anything to stop the shaking?
Not without veterinary guidance. The appropriate response to pain-related shaking is to contact your vet about pain medication adjustments. For cold-related shaking, warmth and comfort are the solution.
Never give human pain medications ibuprofen and acetaminophen are toxic to dogs.
Resources
- TPLO Info. What to Do If Your Dog's Leg Is Shaking After ACL Surgery. tploinfo.com
- Pets Care. Understanding Dog Shaking After Surgery. petscare.com
- Simon Veterinary Surgical. Dog TPLO Surgery Recovery Tips. simonvetsurgical.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com

TPLO
5 min read
CORA-Based Leveling Osteotomy vs TPLO in Dogs
Compare CORA-Based Leveling Osteotomy and TPLO for canine cruciate ligament surgery, including techniques, benefits, and recovery.
When dogs suffer from cranial cruciate ligament (CCL) rupture, surgical options like CORA-Based Leveling Osteotomy (CBLO) and Tibial Plateau Leveling Osteotomy (TPLO) are common. Choosing the right surgery can be confusing for pet owners. This article explains the differences between CBLO and TPLO clearly.
Both surgeries aim to stabilize the knee and reduce pain, but they use different techniques. Understanding these can help you decide the best treatment for your dog. You will learn how each surgery works, their benefits, risks, and recovery expectations.
What is CORA-Based Leveling Osteotomy (CBLO)?
CBLO is a newer surgical method designed to correct the knee joint angle by cutting and rotating the tibia bone. It uses the Center of Rotation of Angulation (CORA) to plan the correction precisely. This technique aims to restore normal joint mechanics and reduce arthritis progression.
The surgery involves measuring the tibial plateau angle and calculating the exact bone cut needed. This precision helps improve joint stability and function after surgery.
- Precise correction planning: CBLO uses detailed imaging to calculate the exact bone cut angle, improving surgical accuracy and joint alignment.
- Restores joint mechanics: By correcting the tibial angle precisely, CBLO helps the knee function more naturally, reducing abnormal stresses.
- Reduces arthritis risk: Better joint alignment may slow arthritis development compared to other techniques.
- Suitable for various dogs: CBLO can be adapted for different breeds and sizes, making it versatile for many patients.
CBLO is gaining popularity because it focuses on restoring the knee’s natural biomechanics. This can lead to better long-term outcomes for dogs with CCL injuries.
What is Tibial Plateau Leveling Osteotomy (TPLO)?
TPLO is a well-established surgery that changes the slope of the tibial plateau to stabilize the knee without relying on ligament repair. It involves cutting the tibia and rotating the bone to a flatter angle. This reduces the forward thrust that causes instability in CCL injuries.
TPLO has been used for decades and is considered a gold standard for many surgeons treating CCL rupture. It is effective in restoring function and reducing pain.
- Changes tibial slope: TPLO flattens the tibial plateau angle to prevent the femur from sliding forward during movement.
- Improves joint stability: By altering bone geometry, TPLO stabilizes the knee without needing ligament reconstruction.
- Proven track record: TPLO has decades of clinical use with good success rates in many dog breeds.
- Requires specialized equipment: The surgery needs specific saws and plates designed for the procedure.
TPLO remains a trusted option for many veterinarians due to its consistent results and ability to restore mobility in affected dogs.
How do CBLO and TPLO differ in surgical technique?
Both CBLO and TPLO involve cutting and rotating the tibia, but their planning and goals differ. CBLO uses the CORA method for precise angle correction, while TPLO focuses on leveling the tibial plateau to a standard angle.
These differences affect how the bone is cut, rotated, and fixed with plates and screws during surgery.
- Planning approach: CBLO uses CORA calculations for individualized correction; TPLO uses a fixed target angle for leveling.
- Bone cut shape: CBLO often uses an angled cut based on CORA; TPLO uses a curved cut around the tibial plateau.
- Rotation amount: CBLO rotation varies by dog’s anatomy; TPLO rotation aims for a 5-degree tibial plateau slope.
- Implant fixation: Both use plates and screws, but implant design may differ based on osteotomy shape.
Understanding these technical differences helps surgeons choose the best method for each patient’s anatomy and needs.
What are the benefits of CBLO compared to TPLO?
CBLO offers several advantages due to its precise correction method. It aims to restore normal joint mechanics more closely than TPLO, which may improve long-term joint health.
These benefits can influence recovery speed, pain levels, and arthritis progression after surgery.
- Individualized correction: CBLO tailors the bone cut to each dog’s unique anatomy, potentially improving joint function.
- Potentially less arthritis: Better joint alignment may reduce abnormal wear and slow arthritis development.
- Preserves bone stock: CBLO may remove less bone compared to TPLO, preserving more natural structure.
- Improved biomechanics: Restoring the natural joint angle can lead to better limb use and comfort.
While CBLO is newer, early studies suggest it may offer improved outcomes for some dogs compared to TPLO.
What are the risks and complications of CBLO and TPLO?
Both surgeries carry risks common to orthopedic procedures, including infection, implant failure, and delayed healing. Some risks vary based on technique and patient factors.
Knowing these risks helps owners prepare and monitor their dogs after surgery.
- Infection risk: Both surgeries involve bone cuts and implants, which can become infected if not properly managed.
- Implant complications: Plates or screws may loosen or break, requiring revision surgery in some cases.
- Delayed bone healing: Healing time can vary, and some dogs may experience slower recovery.
- Postoperative pain: Both procedures cause pain that needs management with medication and care.
Choosing a skilled surgeon and following postoperative instructions reduce these risks significantly.
How do recovery and rehabilitation compare between CBLO and TPLO?
Recovery after CBLO and TPLO involves rest, controlled activity, and physical therapy. Both surgeries require careful management to ensure proper bone healing and joint function.
Rehabilitation protocols may differ slightly based on the surgery type and surgeon preference.
- Initial rest period: Both require strict rest for 6 to 8 weeks to allow bone healing without stress.
- Physical therapy: Controlled exercises help regain strength and range of motion gradually.
- Pain management: Medications and cold therapy reduce pain and swelling during recovery.
- Long-term outcome: Most dogs regain good limb function within 3 to 6 months post-surgery.
Following the veterinarian’s rehabilitation plan is crucial for a successful recovery regardless of the surgery chosen.
Which dogs are best suited for CBLO or TPLO?
Dog size, breed, age, and anatomy influence which surgery is most appropriate. Both CBLO and TPLO can treat CCL rupture effectively but may be better suited to different patients.
Veterinarians evaluate each dog’s knee anatomy and lifestyle before recommending surgery.
- Large breeds: TPLO has a long history of success in large and active breeds like Labradors and German Shepherds.
- Variable anatomy: CBLO’s precise correction suits dogs with unusual tibial angles or complex deformities.
- Older dogs: Both surgeries can be performed safely, but recovery may be slower in senior dogs.
- Activity level: Active dogs may benefit from the biomechanical advantages of CBLO or TPLO depending on anatomy.
Discussing your dog’s specific case with a veterinary surgeon helps determine the best surgical option.
Conclusion
Choosing between CORA-Based Leveling Osteotomy and TPLO depends on your dog’s anatomy, breed, and lifestyle. Both surgeries aim to stabilize the knee and reduce pain from cruciate ligament rupture.
CBLO offers precise correction tailored to the dog’s unique bone structure, potentially improving joint mechanics and reducing arthritis risk. TPLO is a proven, reliable surgery with decades of success in many breeds. Consulting your veterinarian will help you decide the best option for your dog’s health and recovery.
FAQs
What is the main difference between CBLO and TPLO?
CBLO uses precise angle correction based on the CORA method, while TPLO levels the tibial plateau to a fixed angle to stabilize the knee.
Is one surgery better for small dogs?
Both surgeries can be used in small dogs, but CBLO’s individualized correction may be more suitable for unusual bone shapes.
How long does recovery take after these surgeries?
Recovery typically takes 3 to 6 months, with strict rest and physical therapy essential for proper healing.
Are there risks of arthritis after CBLO or TPLO?
Both surgeries reduce arthritis risk by stabilizing the knee, but CBLO may better preserve joint mechanics, potentially slowing arthritis progression.
Can dogs return to normal activity after surgery?
Most dogs regain good limb function and return to normal activity levels with proper rehabilitation after either CBLO or TPLO.

TPLO
5 min read
Bruising After TPLO Surgery in Dogs
Learn about bruising after TPLO surgery in dogs, its causes, care tips, and when to seek veterinary help.
Bruising after TPLO surgery in dogs is a common concern for many pet owners. TPLO, or Tibial Plateau Leveling Osteotomy, is a surgical procedure to stabilize a dog's knee after a cruciate ligament injury. After surgery, owners often notice bruising around the incision site or leg, which can be alarming.
This article explains why bruising happens after TPLO surgery, how to care for your dog during recovery, and when to contact your veterinarian. Understanding bruising helps you support your dog's healing process effectively.
Why Does Bruising Occur After TPLO Surgery in Dogs?
Bruising happens when blood vessels under the skin break and leak blood into surrounding tissues. After TPLO surgery, bruising is usually due to the trauma of surgery and tissue manipulation. The surgical area may show discoloration as part of normal healing.
It is important to recognize that some bruising is expected, but excessive or worsening bruising may indicate complications. Knowing the causes helps you monitor your dog’s recovery closely.
- Surgical trauma: The cutting and repositioning of bone and soft tissue during TPLO can cause small blood vessels to rupture, leading to bruising around the surgical site.
- Inflammation response: The body’s natural healing process causes inflammation, which can increase blood flow and cause visible bruising and swelling near the incision.
- Blood thinning medications: If your dog is on medications like aspirin or NSAIDs, these can increase bruising risk by affecting clotting mechanisms.
- Movement after surgery: Excessive activity or pressure on the leg soon after surgery can worsen bruising by disrupting healing tissues and blood vessels.
Understanding these causes helps you differentiate normal bruising from signs of complications that need veterinary attention.
What Does Normal Bruising Look Like After TPLO Surgery?
Normal bruising after TPLO surgery usually appears as a purple, blue, or reddish discoloration around the incision or leg. It often develops within 24 to 48 hours post-surgery and gradually fades over 1 to 2 weeks.
Knowing the typical appearance and timeline of bruising helps you track your dog’s healing and identify abnormal changes early.
- Color changes: Bruises typically start dark purple or blue, then change to green, yellow, and finally fade as healing progresses over days to weeks.
- Size and spread: Normal bruising is usually localized near the incision and does not spread extensively to other parts of the leg or body.
- Swelling presence: Mild swelling often accompanies bruising but should not cause severe discomfort or limb deformity.
- Pain level: Some tenderness is expected, but your dog should not show signs of severe pain or limping beyond normal post-surgical recovery.
Monitoring these signs helps ensure bruising is part of normal healing and not a sign of infection or bleeding complications.
How Should You Care for Bruising After TPLO Surgery?
Proper care reduces bruising severity and supports healing after TPLO surgery. Following your veterinarian’s instructions and providing gentle care helps your dog recover comfortably and safely.
Simple steps at home can minimize bruising and swelling while preventing complications.
- Rest and restricted activity: Limit your dog’s movement to prevent pressure on the surgical site and avoid worsening bruising or swelling.
- Cold compress application: Applying a cold pack wrapped in cloth for 10–15 minutes several times daily during the first 48 hours can reduce swelling and bruising.
- Proper bandage care: Keep any surgical bandages clean and dry, and follow your vet’s instructions on changing or removing them to avoid irritation.
- Medication adherence: Administer all prescribed painkillers and anti-inflammatory drugs exactly as directed to control pain and reduce inflammation.
Consistent care helps your dog heal faster and reduces the risk of bruising-related complications.
When Should You Be Concerned About Bruising After TPLO Surgery?
While bruising is normal, certain signs indicate that your dog may need urgent veterinary evaluation. Recognizing these warning signs early can prevent serious complications.
If you notice any of the following, contact your veterinarian promptly for advice or examination.
- Rapidly expanding bruises: Bruising that spreads quickly or becomes very large may signal active bleeding or hematoma formation requiring medical attention.
- Excessive swelling and heat: Swelling that worsens with warmth and redness around the incision could indicate infection or inflammation needing treatment.
- Severe pain or lameness: If your dog shows intense pain, refuses to bear weight, or has a limp worsening over time, this may suggest complications.
- Discharge or foul odor: Any pus, bleeding, or bad smell from the surgical site is a sign of infection and requires immediate veterinary care.
Early detection of problems helps ensure timely treatment and better recovery outcomes.
Can Bruising Affect Your Dog’s Recovery After TPLO Surgery?
Bruising itself usually does not affect the overall success of TPLO surgery if it is mild and managed properly. However, severe bruising or related complications can delay healing and cause discomfort.
Understanding the impact of bruising helps you provide better care and communicate effectively with your veterinarian during recovery.
- Minor bruising benefits: Mild bruising is a normal sign of healing and usually resolves without affecting joint stability or function.
- Severe bruising risks: Large bruises or hematomas can increase pain, limit mobility, and sometimes require drainage or additional treatment.
- Infection risk: Bruised tissue is more vulnerable to infection, so keeping the area clean and monitoring closely is essential.
- Physical therapy considerations: Bruising may limit early physical therapy, so adjusting rehabilitation plans based on your dog’s condition is important.
Working closely with your vet ensures bruising does not interfere with your dog’s full recovery and return to normal activity.
How Can You Prevent Bruising After TPLO Surgery in Dogs?
While some bruising is unavoidable due to surgery, certain steps can reduce its severity and support smooth healing. Prevention focuses on careful handling and following veterinary guidance.
Taking precautions before and after surgery helps protect your dog’s tissues and blood vessels from excessive damage.
- Pre-surgery health check: Ensuring your dog is healthy and not on blood-thinning medications before surgery reduces bruising risk.
- Gentle post-op handling: Avoid rough play, jumping, or excessive pressure on the leg during recovery to prevent new bruises.
- Follow medication instructions: Use prescribed drugs properly and avoid over-the-counter medications without vet approval to prevent clotting issues.
- Regular veterinary follow-up: Attend all scheduled check-ups so your vet can monitor healing and address bruising or other concerns early.
Prevention and careful management promote a safer, faster recovery with minimal bruising complications.
Conclusion
Bruising after TPLO surgery in dogs is a common and usually normal part of the healing process. It results from surgical trauma and inflammation, appearing as discoloration near the incision site. Mild bruising typically resolves within two weeks without affecting recovery.
Proper care, including rest, cold compresses, and medication adherence, helps reduce bruising and supports healing. However, owners should watch for signs of excessive bruising, swelling, pain, or infection and contact their veterinarian promptly if these occur. Understanding bruising after TPLO surgery allows you to care for your dog confidently and ensure a smooth recovery.
FAQs
Is bruising after TPLO surgery normal for all dogs?
Yes, mild bruising is common after TPLO surgery due to tissue trauma and inflammation. However, the amount varies by individual and surgical factors.
How long does bruising last after TPLO surgery?
Bruising usually appears within 1–2 days after surgery and fades over 1 to 2 weeks as the tissues heal naturally.
Can I use cold packs on my dog’s bruising after surgery?
Yes, applying cold compresses wrapped in cloth for 10–15 minutes several times daily during the first 48 hours helps reduce swelling and bruising.
When should I call the vet about bruising after TPLO?
Contact your vet if bruising spreads rapidly, swelling worsens, pain is severe, or if there is discharge or foul odor from the incision.
Does bruising affect my dog’s ability to walk after TPLO surgery?
Mild bruising usually does not affect walking, but severe bruising or pain may cause limping and require veterinary evaluation.

TPLO
5 min read
Zlig vs TPLO: Which Surgery Is Better for Dogs?
Compare Zlig and TPLO surgeries for dogs to understand which is better for cruciate ligament injuries and recovery outcomes.
Zlig (STIF-VETLIG) is an intra-articular synthetic implant used to reconstruct the cranial cruciate ligament inside the joint a conceptually different approach from TPLO, which changes joint mechanics rather than replacing the ligament.
Both are valid surgical options for CCL rupture in dogs, and the evidence base for Zlig, while smaller than for TPLO, is growing.
Quick answer: Zlig replaces the torn CCL inside the joint using a synthetic fiber implant through small bone tunnels. A 107-case prospective study reported good to excellent results in 97 cases. TPLO has a much larger evidence base and is the ACVS first-choice for large dogs.
Key takeaways
- Zlig reconstructs the CCL inside the joint using a synthetic fiber implant through small bone tunnels; TPLO changes joint geometry instead
- A 107-case prospective study reported good to excellent results in 97 cases: the largest Zlig dataset, single-centre, without controlled TPLO comparison
- TPLO has a significantly larger evidence base: 25+ years of RCTs and ACVS first-choice status for dogs over 60 lbs
- Zlig requires only small bone tunnels, no osteotomy: bone-cutting complications such as delayed union are not relevant
- Implant failure is the primary Zlig-specific risk: the synthetic ligament may stretch or fail over time in large or very active dogs
- Zlig suits bilateral CCL cases in small to medium dogs: both knees can sometimes be addressed in one procedure
How Zlig works
Zlig stands for Z-Ligament. The procedure uses a synthetic fiber implant (marketed as STIF-VETLIG GLOBAL) placed intra-articularly inside the joint capsule to replace the torn CCL.
Unlike extracapsular techniques (lateral suture, Tightrope) which place material outside the joint, Zlig anatomically reproduces the CCL's position within the joint.
The procedure involves drilling small bone tunnels through the femur and tibia at the anatomical insertion points of the CCL.
The synthetic implant is passed through these tunnels and secured, providing immediate mechanical stability similar to the original ligament.
Because there is no bone cutting or tibial rotation, Zlig is less invasive than TPLO and significantly faster to perform.
Recovery may be faster in the early post-operative period for the same reason.
The hund-kreuzbandriss.de clinical commentary (German veterinary reference site) notes: TPLO is a fairly invasive technique that causes irreversible changes.
Intra-articular reconstruction with synthetic fibers only requires small bone tunnels, and complications from osteotomy when they occur are not always easy to correct.
Who makes the Zlig implant?
The Zlig system uses the STIF-VETLIG GLOBAL implant, manufactured in France.
The procedure was developed primarily in France and Germany. It is gaining awareness in other countries but remains far less available than the major TPLO systems.
The highly porous intra-articular fiber design promotes fibroblast penetration and collagen fiber ingrowth over time, which the manufacturers propose increases implant longevity by improving resistance to flexion and torsional forces.
What the evidence shows
Primary Zlig outcome study
A prospective study by Le Doze, Paris, and Pages (2012 to 2021, 107 cases) found good to excellent results in 97 of 107 cases.
The study was conducted at two veterinary clinics in France. This is the most comprehensive Zlig-specific outcome dataset in the veterinary literature.
The hund-kreuzbandriss.de review confirms: Reconstruction of the CCL using the intra-articular synthetic implant STIF-VETLIG GLOBAL leads to good to excellent results in 97 cases in this prospective study from 2012 to 2021.
Limitations of current Zlig evidence
- The primary study is single-centre, non-randomized, and lacks a direct comparison control group
- Long-term data beyond the study's follow-up period is limited
- The procedure has not been evaluated in large-scale randomized controlled trials comparable to those available for TPLO and TTA
- The evidence base is substantially smaller than for TPLO (25+ years of multi-centre data)
TPLO evidence in context
TPLO has been evaluated in prospective randomized studies, force plate gait analysis trials, and multi-year cohort studies across dozens of institutions.
The ACVS recommends TPLO as the most commonly performed procedure for dogs over 60 lbs based on this evidence base.
Zlig vs TPLO: key differences
| Feature | Zlig | TPLO |
|---|---|---|
| Mechanism | Intra-articular CCL reconstruction | Tibial geometry change |
| Invasiveness | Small bone tunnels; no osteotomy | Full proximal tibial osteotomy |
| Surgery time | Shorter | Longer |
| Primary risk | Implant stretch or failure | Bone healing complications |
| Best for | Small to medium dogs; bilateral cases | Large active dogs; steep TPA |
| Evidence base | Growing but limited | Extensive (25+ years) |
| Availability | Limited; specialist-only | Widely available at specialty centres |
| Osteotomy complications | Not applicable | Relevant (delayed union, TTF) |
Patient selection
Zlig may be preferred when:
- Small to medium breed dogs (primary candidate group in current evidence)
- Bilateral CCL rupture in a small dog where simultaneous correction in one anaesthesia event is desired
- Dog owner prefers to avoid the irreversible tibial changes of an osteotomy
- The surgeon is specifically trained in the Zlig technique
TPLO is typically recommended when:
- Dogs over 30 to 40 lbs, especially large and giant breeds
- Dogs with steep tibial plateau angle (TPA) some are not suitable candidates for Zlig due to concurrent patellar luxation or excessive tibial ridge concavity
- The ACVS first-choice recommendation is preferred, with the largest evidence base
- General specialty practice context where Zlig expertise is not available
Hund-kreuzbandriss.de notes: dogs with a steep tibial plateau angle, concurrent patellar luxation, or excessive concavity of the tibial ridge are not good candidates for Zlig.
In these cases, TPLO represents an excellent and often the only alternative.
For the full surgical alternatives overview, see alternatives to TPLO surgery for dogs. For the TPLO vs Tightrope comparison, see Tightrope vs TPLO surgery for dogs.
Frequently asked questions
Is Zlig as effective as TPLO?
For small to medium dogs, the single-centre prospective study shows good to excellent results in the majority of cases.
A direct head-to-head randomized comparison with TPLO in matched patient populations has not been published, so direct effectiveness comparison is not currently possible.
TPLO has a much stronger and broader evidence base overall.
Can large dogs have Zlig surgery?
The current evidence base for Zlig is strongest in small to medium dogs. Large dogs generate higher joint forces that place more demand on the synthetic implant over time.
Many surgeons with Zlig experience reserve it for smaller patients, though there is no absolute size cutoff in the literature.
What happens if the Zlig implant fails?
The synthetic ligament can stretch or rupture over time. If this occurs, the stifle returns to instability and lameness.
Revision surgery would typically involve a different approach TPLO or TTA since the anatomy has not been altered by the Zlig procedure, making revision more straightforward than after an osteotomy.
How long does Zlig surgery take?
Shorter than TPLO in most cases, because no osteotomy is performed.
The exact duration varies by surgeon experience and patient anatomy, but the minimally invasive nature of the procedure is one of its practical advantages.
Where can I find a surgeon who performs Zlig?
Zlig is performed by veterinary surgeons specifically trained in the technique, primarily in France and Germany where the procedure was developed, and increasingly in other countries.
Board-certified veterinary orthopedic surgeons can advise whether the technique is available in your region.
Resources
- Hund-Kreuzbandriss. Zlig Method: A Study. (Le Doze et al., 2012 to 2021 prospective study summary.) hund-kreuzbandriss.de
- Hund-Kreuzbandriss. TPLO vs TTA vs ZLig vs Suture Retraction: 6 Methods. hund-kreuzbandriss.de
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
- Vetamac. TPLO Surgery for Dogs: Success Rates and Alternative Options. vetamac.com

TPLO
5 min read
DeAngelis vs TPLO Surgery for Dogs
Compare DeAngelis and TPLO surgery for dogs, exploring benefits, risks, recovery, and costs to help pet owners choose the best treatment.
DeAngelis surgery also called lateral suture, extracapsular repair, or ELSS (extracapsular lateral suture stabilization) is one of the oldest and most widely performed CCL repair techniques.
TPLO is the most commonly recommended procedure by the ACVS for dogs over 60 lbs.
Decades of research strongly favor TPLO for larger, more active dogs while supporting extracapsular repair as a cost-effective option for smaller dogs.
Quick answer: TPLO produces superior outcomes in medium and large breed dogs: better limb loading at 8 weeks, higher 1-year function, and slower arthritis progression. DeAngelis surgery is effective for small dogs under 15 to 20 lbs and costs $800 to $1,500 vs $3,000 to $6,000 for TPLO.
Key takeaways
- TPLO produces superior outcomes at 8 weeks and 1 year in size-matched studies: more symmetric loading, higher vertical force, higher owner satisfaction
- DeAngelis surgery is effective in small dogs under 15 to 20 lbs: success rates above 90% reported; significantly worse in larger dogs
- Extracapsular repair relies on periarticular fibrosis for stability; the suture eventually stretches or fails in larger dogs
- DeAngelis surgery costs significantly less: $800 to $1,500 vs $3,000 to $6,000 for TPLO
- Arthritis progression is faster after extracapsular repair than TPLO in multiple studies; TPLO slows OA more effectively
- 10 to 20% of extracapsular repair dogs will require additional treatment for lameness during their lifetime per Today's Veterinary Practice
How each procedure works
DeAngelis surgery (lateral suture / extracapsular repair)
DeAngelis surgery uses a heavy monofilament nylon suture (or, in the TightRope variation, a fiber-tape through bone tunnels) placed outside the joint to mimic the function of the torn CCL.
The suture runs from the lateral fabella behind the femur around to the tibial crest, restraining the cranial drawer movement that occurs with CCL loss.
The suture is not a permanent replacement.
DVM360 confirms that extracapsular stabilization relies on periarticular fibrosis for long-term stability the suture eventually stretches or fails, and joint stability depends on scar tissue formed around the joint during recovery.
DeAngelis surgery does not require bone cutting, specialized equipment, or the steep learning curve associated with TPLO. It is technically accessible to general practice surgeons with appropriate training.
TPLO (Tibial Plateau Leveling Osteotomy)
TPLO addresses CCL rupture by changing joint geometry rotating the tibial plateau so the stifle is mechanically stable without any functioning CCL.
The stability provided by TPLO is bone-based and does not depend on scar tissue or suture integrity over time.
TPLO requires specialized equipment, a radiolucent table, intraoperative radiographs, and surgeon training in the procedure. It is primarily performed at specialty hospitals and by board-certified orthopedic surgeons.
What the clinical evidence shows
Short-term outcomes
DVM360's evidence review found TPLO dogs bear more weight sooner; extracapsular repair dogs hold the leg up for 1 to 2 weeks.
A force plate gait study (ECR n=23, TPLO n=15) found more symmetric limb loading at 8 weeks in TPLO patients compared to extracapsular repair patients at both walk and trot.
Long-term outcomes
Today's Veterinary Practice's evidence-based review reports:
- A randomized blinded clinical trial of 80 dogs found TPLO resulted in higher peak vertical force and higher owner satisfaction at 1 year post-surgery compared to lateral fabellar suture stabilization
- A more recent study showed TPLO outcomes were always better than lateral suture outcomes at any time point up to 1 year
DVM360 notes one early study found no difference at 2 years, but more recent studies consistently show TPLO outperforming extracapsular repair.
Arthritis progression
Today's Veterinary Practice confirms that extracapsular stabilization may result in increased progression of radiographic osteoarthritis compared to TPLO.
Restoring joint mechanics (TPLO) slows cartilage degradation more effectively than temporary stabilization with subsequent fibrosis (extracapsular repair).
Long-term failure
Today's Veterinary Practice reports that 10 to 20% of dogs with extracapsular stabilization will require treatment or reoperation for lameness during their lifetimes, sometimes years after original surgery.
This rate is higher than the expected rate of reoperation-requiring complications after TPLO.
Head-to-head comparison
| Factor | DeAngelis (lateral suture) | TPLO |
|---|---|---|
| Mechanism | Suture + periarticular fibrosis | Bone geometry change |
| Best for | Small dogs under 15 to 20 lbs | Medium and large dogs (30+ lbs) |
| Early weight-bearing | 1 to 2 weeks delayed | Toe-touch within 24 hours |
| Objective outcomes at 1 year | Lower in size-matched studies | Higher |
| OA progression | Faster | Slower |
| Long-term reoperation rate | 10 to 20% | Lower |
| Cost | $800 to $1,500 | $3,000 to $6,000 |
| Equipment required | Basic | Specialized |
| Available at general practice | Yes | Uncommon |
| Evidence base | Extensive | Extensive |
Which dogs are best suited to each?
DeAngelis surgery is appropriate for:
- Small dogs under 15 to 20 lbs with CCL rupture
- Dogs with significant health conditions making a longer anesthetic or more invasive procedure higher risk
- Cases where cost is the primary determining factor
- Older, less active dogs with lower functional demands
TPLO is recommended for:
- Dogs over 30 lbs, especially active and large breeds
- Dogs where long-term joint function and minimal OA progression are the goals
- Working dogs, sport dogs, or highly active pets
- Dogs with steep tibial plateau angles that make extracapsular repair less reliable
For the full surgical alternatives overview, see alternatives to TPLO surgery for dogs. For the TPLO pros and cons, see TPLO surgery pros and cons for dogs.
For the lateral suture detailed comparison, see lateral suture vs TPLO: what's the difference?.
Frequently asked questions
Is DeAngelis surgery as good as TPLO?
For small dogs under 15 to 20 lbs, DeAngelis surgery can be as effective as TPLO.
For medium and large breed dogs, the evidence clearly favors TPLO: better short-term function, better 1-year outcomes, slower arthritis progression, and lower long-term reoperation rates.
How much less does DeAngelis surgery cost than TPLO?
Typically $2,000 to $4,500 less per leg. DeAngelis surgery costs approximately $800 to $1,500 at general practices vs $3,000 to $6,000 for TPLO at specialist centres.
For bilateral cases (both knees), the cost difference is doubled.
Does DeAngelis surgery fail more often than TPLO?
In large dogs, yes. The suture stretches and fails in larger, more active patients because the periarticular fibrosis cannot compensate for the higher joint forces.
Today's Veterinary Practice estimates 10 to 20% of extracapsular repair dogs will need further treatment for lameness during their lifetime.
Can my large dog have DeAngelis surgery instead of TPLO?
Technically yes, but the evidence does not support it as the primary recommendation for dogs over 30 lbs.
DVM360 confirms it is possible that larger dogs treated with lateral suture technique may have significantly worse outcomes than those treated with TPLO.
If DeAngelis surgery fails, can TPLO be done afterward?
Yes. TPLO is a standard revision option when extracapsular repair fails or when the dog develops ongoing instability and lameness.
Discuss this with a board-certified orthopedic surgeon if your dog's original repair has not produced adequate results.
Resources
- DVM360. Cranial Cruciate Ligament Repair: One Size Does NOT Fit All. dvm360.com
- Today's Veterinary Practice. Canine Cranial Cruciate Disease: An Evidence-Based Look at Current Treatment Modalities. todaysveterinarypractice.com
- DVM360. Journal Scan: Ruptured CCL Surgery: TPLO vs Extracapsular Repair. dvm360.com
- Walkerville Vet. Cruciate Surgery: TPLO, TTA, MMP, DeAngelis. walkervillevet.com.au
- ACVS. Cranial Cruciate Ligament Disease. acvs.org

TPLO
5 min read
What is TPLO Surgery in Dogs?
What is TPLO in dogs? A surgery to fix CCL injuries, restore mobility, and prevent arthritis. Learn the procedure, benefits, risks, and recovery timeline.
TPLO (tibial plateau leveling osteotomy) is the most widely performed surgery for cranial cruciate ligament (CCL) rupture in dogs.
It is the procedure most commonly recommended by board-certified veterinary surgeons for medium and large dogs, and it has the most extensive published evidence base of any CCL repair technique.
Understanding what TPLO is, why it works, and what recovery involves helps owners make informed decisions and prepare for the process.
Quick answer: TPLO (tibial plateau leveling osteotomy) corrects CCL rupture by changing tibial plateau geometry to eliminate the shear force making the CCL unnecessary. A curved cut is made through the tibia, rotated to 5 degrees, and secured with a locking plate while the bone heals. Success rate is 90 to 95%.
Key takeaways
- TPLO stands for tibial plateau leveling osteotomy: it levels the tibial plateau through a bone cut to stabilize the stifle without relying on the damaged CCL
- TPLO corrects CCL rupture by eliminating the shear force the CCL resists: it changes the tibial plateau geometry so the joint is stable without a CCL
- The procedure achieves a post-operative tibial plateau angle of approximately 5 degrees: VCA confirms the tibial plateau is rotated until appropriately level (ideally 5 degrees), eliminating cranial tibial thrust
- TPLO has a 90 to 95% success rate: RCVS confirms 90 to 95% of dogs regain complete or near-complete function; 93% of owners report satisfaction at 12 months
- Recovery requires 8 to 12 weeks of activity restriction for bone healing; progressive return to full activity follows; muscle recovery takes up to 6 months
- TPLO is the most commonly recommended procedure for CCL rupture by ACVS surgeons in dogs over approximately 15 to 20 kg
The CCL and why it ruptures
The cranial cruciate ligament (CCL) is the equivalent of the human ACL in dogs.
It connects the femur (thigh bone) to the tibia (shin bone) inside the stifle (knee) joint and serves three primary functions:
- Preventing the tibia from sliding forward relative to the femur during weight bearing
- Limiting internal rotation of the tibia
- Preventing hyperextension of the stifle
Unlike most human ACL tears (which are acute traumatic events), CCL rupture in dogs is typically degenerative. The fibers weaken progressively over months to years before the ligament fails completely.
By the time complete rupture occurs, most of the fibers have already been compromised.
This is why the contralateral (opposite) CCL is also at risk -- the same degenerative process typically affects both stifles.
When the CCL ruptures, the tibial plateau's natural slope creates an unconstrained cranial shear force during weight bearing.
The femur slides down the tibial plateau, the tibia shifts forward, and the dog is in pain and unable to use the leg normally.
CCL rupture is one of the most common orthopedic injuries in dogs. High-risk breeds include Labrador Retrievers, Rottweilers, Staffordshire Terriers, Mastiffs, Newfoundlands, and German Shepherds.
Neutered dogs have a higher risk than intact dogs of the same breed.
How TPLO works: the biomechanical principle
The normal canine tibial plateau slopes downward from front to back at approximately 23 to 29 degrees (the tibial plateau angle, or TPA).
When the dog bears weight, this slope creates a cranial shear force -- the tibia tries to slide forward relative to the femur. In a normal stifle, the CCL resists this force.
When the CCL is absent, the force is unopposed and the joint is unstable.
TPLO does not attempt to restore the CCL. Instead, it eliminates the shear force entirely.
By rotating the tibial plateau to approximately 5 degrees, the joint surface becomes level enough that the patellar tendon -- rather than the CCL -- provides the stabilizing force during weight bearing.
The joint is mechanically stable without any ligament. The need for the CCL is eliminated by changing the geometry of the tibial plateau.
Dispomed confirms: TPLO addresses CCL rupture by altering the biomechanics of the stifle. The tibial plateau normally slopes downward; TPLO creates a flat or level plateau, decreasing sliding motion at this joint.
The TPLO procedure: step by step
Pre-operative planning
Before surgery, the dog is sedated and lateral stifle radiographs are taken.
The surgeon measures the TPA from these images and calculates the amount of rotation required to achieve the target post-operative TPA of approximately 5 degrees.
The surgeon also selects the appropriate saw blade radius and implant size based on these measurements and the dog's body weight.
Anesthesia and preparation
The dog is placed under general anesthesia. The surgical site is clipped and prepared with antiseptic solution. IV antibiotics (typically cefazolin) are given before the incision.
Joint inspection and meniscal assessment
The surgeon makes an incision over the medial aspect of the proximal tibia and performs a small arthrotomy (opening into the joint) to inspect the menisci.
Damaged meniscal tissue is removed at this stage.
Chewy confirms: during surgery, the joint is examined and the surgeon might remove damaged tissue before proceeding with the osteotomy.
The osteotomy
Using a specialized oscillating saw blade, the surgeon makes a curved (arcuate) cut through the proximal tibia at the level of the tibial plateau.
The radius of this cut is determined by the pre-operative planning.
Rotation
The cut bone segment (containing the tibial plateau) is rotated backward (caudally) by the calculated amount to achieve the target TPA.
VCA Animal Hospitals confirms: the top section of the tibia is rotated backward until deemed appropriately level -- typically 2 to 14 degrees, with 5 degrees as the ideal angle.
Plate fixation
A TPLO plate (a contoured locking plate) is secured to the tibia across the osteotomy using locking screws. The plate holds the rotated tibial plateau in position while the bone heals.
Closure
The joint capsule, fascia, subcutaneous tissue, and skin are closed in layers. The incision is bandaged.
Success rate and outcomes
RCVS Canine Cruciate Registry confirms: TPLO has a 90 to 95% success rate, with 90 to 95% of dogs regaining complete or near-complete function; 93% of owners reporting satisfaction at 12 months.
A 2013 study found that TPLO patients achieved 93% restoration of limb function at 1 year.
TPLO produces better long-term outcomes than lateral suture stabilization in most studies of large dogs, and similar long-term outcomes to TTA in comparable patient populations.
RCVS confirms: all dogs with CCL rupture are expected to develop at least some osteoarthritis, but this is reduced or delayed in dogs that have had surgical stabilization.
Recovery overview
- Weeks 0 to 2: crate rest, 5-minute bathroom leash walks only, e-collar on at all times
- Weeks 2 to 6: graduated leash walk increase, passive range-of-motion exercises
- Week 6: radiographic assessment of bone healing; activity increase if healing is progressing
- Weeks 8 to 12: final radiographic confirmation of bone healing; activity restrictions lifted if healing is confirmed
- Months 3 to 6: progressive return to full activity; muscle recovery continues
For the full recovery guide, see what to expect after TPLO surgery in dogs. For the surgery comparisons, see TPLO vs CBLO vs TTA: a guide to cruciate surgery options.
For preparation, see preparing for your dog's TPLO surgery. For the signs that TPLO may be needed, see 13 signs your dog may need TPLO surgery.
Frequently asked questions
Is TPLO the only surgery for CCL rupture in dogs?
No. The main alternatives are lateral suture stabilization (extracapsular repair), TTA (tibial tuberosity advancement), and CBLO (CORA-based leveling osteotomy). Lateral suture achieves good outcomes in dogs under approximately 35 pounds.
TTA produces similar long-term outcomes to TPLO in appropriately selected dogs. CBLO is used mainly for immature dogs and revision surgery cases.
Can a dog live without surgery for CCL rupture?
Small dogs (under 10 to 15 kg) sometimes stabilize adequately with conservative management (strict rest, weight management, joint support).
For most dogs over 15 kg, conservative management does not restore normal joint stability and the dog remains in pain with progressive arthritis.
Surgery is strongly recommended for most medium and large dogs.
How long does TPLO surgery take?
The procedure typically takes 1.5 to 2 hours. Bilateral simultaneous TPLO takes 3 to 4 hours.
Does the TPLO plate stay in permanently?
Yes, in most cases. The plate is not routinely removed after the osteotomy heals. It is removed if it causes complications (infection, implant irritation, failure).
What is the cost of TPLO surgery?
TPLO typically costs $3,500 to $6,000 per stifle depending on the facility, surgeon, geographic location, and the dog's size.
This typically includes the surgical procedure, anesthesia, hospitalization, implants, and the immediate post-operative period.
Resources
- RCVS Canine Cruciate Registry. Tibial Plateau Levelling Osteotomy (TPLO). rcvsknowledge.org
- VCA Animal Hospitals. TPLO. vcahospitals.com
- Dispomed. TPLO Surgery in Dogs: Success Rates and Alternatives. dispomed.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org

TPLO
5 min read
What to Expect After TPLO Surgery in Dogs
Learn what to expect after TPLO surgery, including pain, swelling, healing time, and care tips for your dog’s smooth recovery.
TPLO recovery is a structured 8 to 12 week process. The surgery takes 1.5 to 2 hours; the recovery takes months.
Understanding what is normal at each stage allows owners to support recovery confidently, recognize complications early, and avoid mistakes that extend recovery or cause setbacks.
Quick answer: After TPLO surgery, expect 8 to 12 weeks of graduated activity restriction. Weeks 1 to 2: crate rest, short walks, e-collar on. Weeks 3 to 8: progressive walks and range-of-motion exercises. Weeks 8 to 12: confirm bone healing and resume normal activity. Full muscle recovery takes 6 months.
Key takeaways
- The 8 to 12 week bone healing period is non-negotiable: the plate holds the osteotomy until new bone consolidates; premature high-impact activity before radiographic healing can cause plate failure
- Weeks 1 and 2 are highest-risk for infection and wound complications: the incision is healing; activity and wound management must be strictly controlled
- Most dogs begin partial weight bearing within the first few days: early weight bearing maintains muscle mass and supports bone healing per TPLO Info
- The 2-week recheck, 6-week radiograph, and 12-week radiograph are essential milestones: each has a specific purpose; missing them risks missing early complications
- Full muscle recovery takes up to 6 months after bone healing is confirmed; bone union and functional recovery are not the same endpoint
- The e-collar must stay on for 10 to 14 days without exception: licking is the leading owner-controlled cause of TPLO surgical site infection
Immediately after surgery: days 1 to 3
Coming home
Dogs are typically discharged 24 to 48 hours after TPLO surgery, or sometimes the same day at facilities with same-day discharge protocols.
The dog will be sedated, disoriented from anesthesia, and may have bandaging on the surgical leg.
Expect:
- Groggy, disoriented behavior for 12 to 24 hours from anesthesia
- Some whining or restlessness (normal -- from anesthesia, not necessarily pain)
- Refusal to bear weight on the operated leg
- Mild to moderate swelling around the incision, peaking at days 2 to 3
Pain management
Give prescribed medications on the exact schedule provided. Typical medications include NSAIDs (meloxicam, carprofen, or similar) and gabapentin. Give NSAIDs with food to reduce gastric irritation.
TPLO Info confirms: dogs may experience slight discomfort from surgical inflammation in the days following surgery; this should be managed with appropriate pain medications given on schedule.
Confinement
Strict crate rest or confinement in a small, non-slippery room. No stairs, no jumping, no access to furniture. Leash walks outdoors for bathroom purposes only, 3 to 5 minutes, multiple times daily.
Weeks 1 to 2: incision healing phase
This is the highest-risk period for wound complications and infection.
Incision care:
- E-collar must be on at all times except supervised eating and drinking
- Keep the incision dry -- no baths, no wet grass walks
- Inspect the incision daily for spreading redness, cloudy or malodorous discharge, or wound dehiscence
- Normal: a small amount of clear serum discharge in the first 2 to 3 days; mild redness at the incision line fading from day 5 onward
- Abnormal: spreading redness, cloudy discharge, increasing warmth, or wound edges separating -- contact your vet immediately
Activity:
- Leash walks only, 5 minutes maximum, multiple times daily
- No running, jumping, stairs, or playing with other pets
- No unsupervised time without the e-collar
Weight bearing:
- Many dogs begin toe-touching within the first few days
- Some dogs refuse weight bearing for the full two weeks -- this is also normal
- Encouraging gentle, slow walking on a leash helps maintain muscle mass
2-week recheck:SustainableVet.org confirms: the 2-week visit confirms incision healing, removes sutures or staples if healing is complete, and reviews pain management and early mobility status.
Weeks 3 to 6: progressive walking phase
The incision is closed; the focus shifts to controlled progressive activity increase and gentle range of motion.
Activity:
- Increase leash walk duration gradually -- TPLO Info recommends increasing by up to 5 minutes per week from the week 2 baseline
- No off-leash activity, no running, no jumping, no stairs without a ramp
- No playing with other pets
Range-of-motion exercises:
- Passive range-of-motion (PROM) exercises can begin in most dogs at weeks 2 to 4 if the vet approves
- Gentle flexion and extension of the stifle for 5 to 10 repetitions, 2 to 3 times daily
- Supports joint flexibility and prevents stiffness during the bone healing period
Weight bearing:
- By weeks 3 to 4, most dogs are consistently bearing weight on the operated leg
- Occasional toe-touching or three-legged walking during activity is still normal
What to watch for:
- Lameness that worsens after a period of improvement (trajectory reversal)
- New swelling at the plate site, separate from the healed incision
- Any discharge from the healed wound area
Weeks 6 to 8: early consolidation phase
6-week radiograph (critical milestone):SustainableVet.org confirms: the 6-week visit includes follow-up radiographs to evaluate bone alignment and early plate stability; if healing looks good, limited physical therapy or short walks may begin.
If the radiograph shows good progression of bone healing, activity is increased. If healing is delayed, restrictions continue with a re-radiograph at 8 weeks.
Activity (if healing is confirmed):
- Leash walks increasing to 15 to 20 minutes twice daily
- Rehabilitation exercises as directed
- Hydrotherapy (if available) is an excellent low-impact option for muscle building
Weeks 8 to 12: bone consolidation and return to activity
Follow-up radiograph at 8 to 10 weeks:Medcovet confirms: a follow-up radiograph is commonly performed at weeks 8 to 10 to assess bone healing; if healing is good, the vet may approve a gradual increase in activity.
12-week visit (major milestone):SustainableVet.org confirms: the 12-week visit includes final radiographs to confirm bone fusion and plate integrity; the vet may lift most activity restrictions at this stage.
Activity (if healing confirmed at 12 weeks):
- Progressive return to normal activity
- Running, jumping, and play can gradually resume over weeks 12 to 16
- Supervised play and controlled activity continue until full muscle recovery
Animal Outpatient Surgery confirms: full muscle recovery takes up to 6 months to restore full strength and coordination in the operated leg.
Medications and supplements
NSAIDs: given for 2 to 4 weeks post-surgery or as directed. Never exceed the prescribed dose; never use human NSAIDs (ibuprofen, aspirin) -- they are toxic to dogs.
Gabapentin: helps with pain and anxiety in the early recovery period; typically tapered off after 2 to 4 weeks.
Joint supplements: glucosamine and omega-3 fatty acids are commonly recommended for long-term joint health. Starting them at surgery is reasonable; discuss with your vet.
Signs requiring immediate veterinary contact
At any stage of recovery, contact your vet immediately if you see:
- Spreading redness or warmth at the incision or plate site
- Cloudy, yellow, green, or malodorous discharge from the wound
- Wound edges separating
- Severe worsening of lameness
- Fever, lethargy, or loss of appetite beyond the first 2 to 3 days
- Any draining tract opening near the surgical site
For the week-by-week rehabilitation exercises guide, see TPLO recovery exercises for dogs. For the infection prevention guide, see how can TPLO infections be prevented post-operatively?.
For the PROM exercises guide, see PROM exercises for dogs after TPLO surgery. For the earliest infection signs, see earliest signs of TPLO infection.
Frequently asked questions
When will my dog be back to normal after TPLO?
Bone healing is typically confirmed by radiograph at 8 to 12 weeks. Most activity restrictions are lifted at the 12-week mark.
Full muscle recovery and functional normalization takes up to 6 months from surgery.
TPLO has a high success rate (more than 90%) and most dogs return to their pre-injury activity level after full recovery.
My dog is not using the leg at all after surgery. Is that normal?
Some dogs refuse to bear weight for the full first 2 weeks. This is within normal range.
If the dog was bearing some weight and has now stopped completely after day 5, contact your vet to rule out a complication.
PROM exercises and gentle encouraged walking help prompt early weight bearing.
Can my dog go up stairs during recovery?
Not during weeks 1 to 6. Stairs generate impact and torsion on the healing osteotomy. Carry small dogs over stairs or use a ramp.
Larger dogs may need a sling or harness to assist navigating a small number of essential steps.
When can my dog swim or do hydrotherapy?
Hydrotherapy (underwater treadmill or controlled pool swimming) typically begins after incision healing is confirmed at 2 weeks. Check with your vet.
Swimming in open water (lakes, rivers) is not appropriate until the vet explicitly clears the dog, typically after the 12-week radiograph.
When should I be concerned about my dog's pain during recovery?
Increasing pain after initial improvement -- the dog more lame or more distressed today than yesterday -- is the key warning sign. Normal recovery pain decreases progressively.
Worsening pain warrants veterinary assessment to rule out infection, implant complication, or late meniscal injury.
Resources
- TPLO Info. What to Expect After Your Dog's TPLO Surgery. tploinfo.com
- Animal Outpatient Surgery. What to Expect After Your Dog's TPLO Surgery. animaloutpatientsurgery.com
- Medcovet. Essential Guide to Dog Recovery TPLO Surgery. medcovet.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com

TPLO
5 min read
TPLO Failure Rate in Dogs Explained
Learn about TPLO failure rates in dogs, causes, prevention, and recovery tips for better surgical outcomes.
Tibial Plateau Leveling Osteotomy (TPLO) is a common surgery to fix cranial cruciate ligament injuries in dogs. Many pet owners worry about the TPLO failure rate in dogs and what it means for their pet’s recovery. Understanding the risks and outcomes can help you make informed decisions for your dog’s health.
This article explains what TPLO failure means, how often it happens, and what factors affect it. You will learn how to recognize complications, prevent failure, and support your dog after surgery for the best results.
What is the TPLO failure rate in dogs?
The TPLO failure rate in dogs varies but is generally low when performed by experienced surgeons. Failure means the surgery did not fully restore knee stability or complications occurred that affect recovery.
Studies show failure rates range from 2% to 10%, depending on factors like surgical technique and dog size. Most dogs recover well and regain normal function after TPLO.
- Low overall failure: Most dogs have successful outcomes with TPLO, with failure rates usually under 10% in clinical studies.
- Variation by surgeon: Surgeons with more experience tend to have lower failure rates due to better technique and planning.
- Dog factors matter: Larger dogs or those with severe ligament damage may have a higher risk of failure after TPLO.
- Definition of failure: Failure includes persistent lameness, implant problems, or the need for revision surgery after TPLO.
Understanding these rates helps you set realistic expectations and discuss risks with your vet before surgery.
What causes TPLO failure in dogs?
Several factors can lead to TPLO failure. Knowing these causes helps prevent problems and improve recovery chances.
Failures often result from surgical errors, infection, or poor healing. Other causes include implant issues and the dog’s activity level after surgery.
- Surgical technique errors: Incorrect bone cuts or implant placement can cause instability or implant failure after TPLO.
- Infection risk: Postoperative infections can delay healing and lead to surgery failure if not treated promptly.
- Poor bone healing: Factors like age, nutrition, or underlying disease can slow bone healing and cause failure.
- Excessive activity: Dogs that are too active too soon may damage the surgical site and cause failure.
Preventing these causes requires careful surgical planning, good postoperative care, and close monitoring.
How can TPLO failure be prevented in dogs?
Prevention of TPLO failure starts with choosing a skilled surgeon and following postoperative instructions closely. Proper care reduces complications and supports healing.
Owners play a key role in managing their dog’s activity and health during recovery to avoid failure.
- Experienced surgeon choice: Select a board-certified surgeon with extensive TPLO experience to reduce technical errors.
- Strict activity control: Limit your dog’s movement and exercise as advised to protect the surgical site during healing.
- Infection prevention: Keep the incision clean and watch for signs of infection to catch problems early.
- Follow-up visits: Regular vet check-ups help monitor healing and detect complications before failure occurs.
Following these steps improves your dog’s chance of a successful TPLO surgery and recovery.
What are the signs of TPLO failure in dogs?
Recognizing failure signs early lets you seek veterinary care promptly. Signs often involve ongoing lameness or swelling around the knee.
Not all postoperative discomfort means failure, but persistent or worsening symptoms should be evaluated by a vet.
- Persistent lameness: Continued limping or inability to bear weight on the leg weeks after surgery may indicate failure.
- Swelling or pain: Increased swelling, heat, or pain around the knee can signal infection or implant problems.
- Unusual noises: Clicking or popping sounds from the knee might mean implant loosening or joint instability.
- Reduced range of motion: Difficulty bending or extending the knee joint may suggest complications affecting recovery.
If you notice any of these signs, contact your veterinarian immediately for assessment and treatment.
How is TPLO failure treated in dogs?
Treatment depends on the cause of failure. Some cases require revision surgery, while others may respond to medical management.
Your vet will perform exams and imaging to determine the best approach to restore function and relieve pain.
- Revision surgery: Some dogs need a second surgery to fix implant issues or correct bone alignment after failure.
- Antibiotic therapy: Infections causing failure require antibiotics and sometimes implant removal to heal properly.
- Pain management: Medications and physical therapy help control pain and improve mobility during recovery.
- Supportive care: Weight management and controlled exercise support healing and reduce stress on the knee joint.
Early treatment improves outcomes and helps your dog regain normal activity levels.
What is the recovery outlook after TPLO failure in dogs?
Recovery after TPLO failure can be more challenging but is often successful with proper care. Many dogs regain good function after treatment.
Recovery time may be longer, and some dogs need ongoing management to maintain comfort and mobility.
- Longer healing time: Dogs with failure often require extended recovery periods compared to uncomplicated TPLO cases.
- Physical therapy benefits: Rehabilitation exercises improve strength and joint function after failure treatment.
- Possible chronic issues: Some dogs may develop arthritis or mild lameness despite treatment.
- Owner commitment: Consistent care and monitoring are essential for a positive recovery after failure.
With patience and veterinary support, many dogs live active, happy lives following TPLO failure treatment.
What factors affect TPLO failure rates in different dog breeds?
Breed and size influence TPLO outcomes. Larger and more active breeds may face higher failure risks due to greater joint stress.
Understanding breed-specific risks helps tailor surgical and postoperative care for better success.
- Large breed challenges: Heavy dogs put more pressure on the knee, increasing the chance of implant failure or delayed healing.
- Active breed risks: Energetic dogs may be harder to restrict post-surgery, raising failure risk from premature activity.
- Bone quality differences: Some breeds have denser or more fragile bones affecting healing after TPLO.
- Genetic predispositions: Certain breeds may be more prone to ligament injuries and complications after surgery.
Discuss your dog’s breed and lifestyle with your vet to plan the best approach for TPLO surgery and recovery.
Conclusion
The TPLO failure rate in dogs is generally low but depends on many factors like surgeon skill, dog size, and postoperative care. Understanding these helps you prepare for surgery and recovery.
By choosing an experienced surgeon, following care instructions, and watching for signs of failure, you can help your dog heal well and return to a happy, active life after TPLO surgery.
What is the typical TPLO failure rate in dogs?
TPLO failure rates usually range between 2% and 10%, with most dogs recovering successfully after surgery.
Can infection cause TPLO failure in dogs?
Yes, infections at the surgical site can lead to delayed healing and failure if not treated quickly with antibiotics and care.
How soon can dogs return to activity after TPLO?
Dogs typically need 8 to 12 weeks of restricted activity to allow proper healing and reduce the risk of failure.
Is revision surgery common after TPLO failure?
Revision surgery is sometimes necessary to correct implant or alignment issues when TPLO fails to restore knee stability.
Do larger dogs have higher TPLO failure rates?
Larger dogs often have increased failure risk due to greater joint stress and challenges in controlling postoperative activity.

TPLO
5 min read
TPLO Rehab Exercises for Dogs
Learn effective TPLO rehab exercises for dogs to ensure safe recovery and regain mobility after surgery.
Rehabilitation after TPLO surgery is not optional it is one of the primary determinants of long-term outcome.
Dogs that complete a structured rehabilitation program return to function faster, develop better muscle mass, and have lower rates of long-term lameness than those managed with rest alone.
The program follows a predictable progression from passive exercises in the first days to full activity at 4 to 6 months.
Quick answer: TPLO rehab begins with PROM and cold packing in the first days, progresses to controlled leash walks and sit-to-stand from weeks 2 to 6, then adds hydrotherapy and balance work from weeks 6 to 12. Full activity returns at 4 to 6 months after surgeon approval and radiographic confirmation.
Key takeaways
- Rehabilitation follows four phases: passive exercises, active weight-bearing, strength building, and return to activity over 3 to 6 months
- Sit-to-stand is the most important active exercise: targets quadriceps and hamstrings; begins once partial weight-bearing is established
- Hydrotherapy begins once the incision is closed (3 to 4 weeks post-surgery): up to 90% joint load reduction
- Balance work begins at weeks 4 to 6: weight shifting, single leg lifts, and balance pads correct gait patterns
- All exercise increases require surgeon approval: do not advance without veterinary guidance, especially before the 8-week radiographic recheck
- Cavalletti poles and incline walks begin at weeks 8 to 12 to challenge muscle activation and range of motion
Why rehabilitation matters after TPLO
TPLO surgery stabilizes the stifle, but surgery alone does not rebuild the muscle mass lost to months of pre-surgical lameness and the early post-operative period. Without rehabilitation, dogs develop:
- Persistent muscle atrophy and asymmetric hindlimb development
- Joint stiffness from scar tissue and reduced range of motion
- Altered gait patterns that stress the contralateral knee
- Slower overall recovery and increased risk of re-injury
Veterinary Partner (VIN) divides post-TPLO rehab into three phases.
Phase 1 manages pain while encouraging limb use (days 1 to 14).
Phase 2 restores musculoskeletal function (weeks 2 to 8). Phase 3 builds core strength and returns to activity (weeks 8 to 16+).
Phase 1: Immediate post-operative (days 1 to 14)
Passive range of motion (PROM)
Begin PROM at 2 to 5 days post-surgery. Dog on their side, operated leg up gently flex and extend the stifle in a slow bicycle motion. Ten repetitions, 3 times daily.
Full guide: PROM exercises for dogs after TPLO surgery.
Cold packing
Apply ice or a cold pack wrapped in a thin towel to the surgical site for 10 to 15 minutes after each PROM session.
Repeat 3 times daily for at least the first 5 days. Cold packing reduces local inflammation and post-exercise swelling.
Short controlled leash walks
5 to 10 minutes, 2 to 3 times daily from day 10 to 14 onward (after suture removal). Slow pace on a flat, even surface.
Leash only no off-leash time at any stage during restricted recovery.
Massage
Gentle massage of the muscles above and below the stifle joint the quadriceps, hamstrings, and calf muscles improves local circulation and reduces muscle spasm.
Use palm pressure in a circular motion, not surface stroking.
Phase 2: Active weight-bearing (weeks 2 to 8)
Sit-to-stand exercises
Sit-to-stand is the most important active strengthening exercise in TPLO rehabilitation. Ask your dog to sit, then stand, repeatedly.
TPLO Info confirms that sit-to-stand action helps with range of motion in the hindlimb joints and activates the muscles that support the stifle.
Protocol:
- Begin with 5 repetitions, 2 times daily at week 2 to 3
- Progress to 10 to 20 repetitions, 2 to 3 times daily as strength improves
- Ensure the dog sits squarely, not off to one side
- Use a wall on the operated leg's side if needed to prevent kicking the leg out
Progressive leash walk duration
Week 3 to 4: 10 to 15 minutes, 3 times dailyWeek 5 to 6: 15 to 20 minutes, 3 times dailyWeek 7 to 8: 20 to 30 minutes, 2 to 3 times daily
All walks on leash. No running, jumping, or off-leash time.
Warm packs before exercise
After the first 5 post-operative days, apply warm compresses for 5 minutes before each exercise session.
Warmth relaxes muscles and improves local circulation before PROM and active exercises.
Phase 3: Strength building (weeks 6 to 12)
Hydrotherapy (underwater treadmill)
Begin hydrotherapy once the incision is fully healed typically 3 to 4 weeks post-surgery. Water buoyancy reduces joint load by up to 90% while allowing the muscles to work against water resistance.
WM Referrals' post-TPLO physiotherapy guide recommends starting hydrotherapy around week 6, with sessions of 15 to 30 minutes at progressive durations as strength improves.
For the full hydrotherapy and laser therapy guide, see laser therapy for dogs after TPLO surgery.
Balance and proprioception exercises
Begin from weeks 4 to 6 once partial weight-bearing is reliable:
Weight shifting: with the dog standing, gently nudge the hips from side to side to encourage weight transfer between limbs. TPLO Info recommends this once the dog is consistently bearing weight on the surgical limb, typically 3 to 4 weeks post-surgery.
Single leg lifts (contralateral leg): while the dog stands, lift one front or non-surgical hind leg for 10 to 15 seconds. This forces weight onto the operated limb and activates stabilizing muscles. Do not lift the operated leg.
Balance pad or wobble board: progress to standing on a soft or unstable surface from weeks 6 to 8. Begin with seconds of contact and build to 30+ seconds as confidence and strength improve.
Cavalletti poles
Slow stepping over 4 to 5 poles laid flat on the ground at shoulder-width spacing.
Introduced at weeks 6 to 8, this forces controlled hip and stifle flexion, improving range of motion and coordination. Two to four passes per session, 2 to 3 sessions daily.
Incline walking
Gentle uphill walking increases hindlimb muscle load without high joint impact.
WM Referrals recommends slow walks up and down inclines from weeks 6 to 8, starting at 1 to 3 minutes and progressing as tolerated.
Phase 4: Return to full activity (months 3 to 6)
After the 8 to 12 week radiographic recheck confirms adequate osteotomy healing, the surgeon approves progressive return to normal activity.
Madison Veterinary Specialists' rehabilitation guide notes that trotting on leash is allowed after the dog is comfortable with extended walks of 1 hour or more and sit-to-stand exercises.
Activity milestones:
- Month 3: 30 to 45 minute leash walks, light trot on leash
- Month 4: free trotting on leash, gentle play
- Month 5 to 6: off-leash play approved by surgeon, return to normal activity
High-impact activities jumping, ball chasing, agility are reintroduced last, typically at 5 to 6 months, after a final clinical assessment.
For the range of motion exercises covered in this program, see TPLO range of motion exercises for dogs. For the recovery exercises at each stage, see TPLO recovery exercises for dogs.
For the PROM technique guide, see PROM exercises for dogs after TPLO surgery. For when physical therapy begins, see when to start physical therapy after TPLO surgery.
For the full recovery tips overview, see 10 essential TPLO recovery tips for pet owners.
Frequently asked questions
When should TPLO rehabilitation begin?
Rehabilitation begins within days of surgery. PROM starts at 2 to 5 days post-surgery. Cold packing begins on day 1.
Short controlled leash walks begin at 10 to 14 days after suture removal. Formal hydrotherapy and balance exercises begin at 3 to 6 weeks depending on healing.
Can I do all the rehab exercises at home?
Many exercises PROM, sit-to-stand, controlled leash walks, balance nudging, cold and warm packing can be done at home. Hydrotherapy requires a specialist facility.
Balance boards and cavalletti poles require some equipment investment but are achievable at home.
A formal rehabilitation assessment at a certified canine rehab centre is strongly recommended for at least the first few sessions.
How do I know if I'm pushing too hard?
Signs of over-exercise: increased swelling or heat at the surgical site, markedly worse lameness the next day, or the dog refusing to perform the exercise or vocalizing during it.
Reduce exercise intensity immediately and contact your vet. Start each phase at the minimum repetitions and increase only if there is no increase in pain or swelling.
Is hydrotherapy necessary for TPLO recovery?
It is not mandatory but is highly beneficial. Studies show dogs receiving hydrotherapy alongside land-based rehabilitation recover faster and develop better muscle mass than those doing land exercises alone.
If access to a hydrotherapy facility is limited, land-based exercises performed consistently produce good outcomes.
What happens if I skip rehabilitation?
Dogs managed with rest alone after TPLO develop significant muscle atrophy, reduced range of motion, and often persistent lameness. Rehabilitation dramatically improves functional outcomes.
Even a simple home program of PROM, controlled leash walks, and sit-to-stand exercises produces substantially better results than passive rest alone.
Resources
- Veterinary Partner (VIN). Physical Rehabilitation of Dogs Following TPLO. veterinarypartner.vin.com
- TPLO Info. Rehab for Dogs After TPLO Surgery. tploinfo.com
- WM Referrals. Post-Operative Rehabilitation After TPLO. wm-referrals.com
- Madison Veterinary Specialists. TPLO Rehabilitation Home Care Instructions. mvsvets.com
- Vetplayas. TPLO Rehab Exercises: Accelerating Recovery and Restoring Mobility. vetplayas.com

TPLO
5 min read
TPLO Anesthesia Protocol in Dogs Explained
Learn about the TPLO anesthesia protocol in dogs, including preparation, drugs used, monitoring, and recovery steps for safe surgery.
TPLO surgery requires general anesthesia that is tailored to the individual patient. For most healthy adult dogs, TPLO anesthesia is straightforward and low-risk.
For older dogs, obese dogs, or those with concurrent medical conditions, the anesthetic plan requires additional planning.
Understanding what the protocol involves helps owners know what to expect and how to prepare their dog.
Quick answer: TPLO anesthesia includes a preoperative blood panel; premedication with an opioid and sedative; induction with propofol or alfaxalone; maintenance with isoflurane or sevoflurane; continuous monitoring; and multimodal pain management including NSAIDs, nerve blocks (sciatic/femoral or epidural), and post-operative opioids.
Key takeaways
- Preoperative blood work is standard for all TPLO patients: CBC and biochemistry identify organ dysfunction and conditions that increase anesthetic risk
- TPLO anesthesia is multimodal: combining opioids, NSAIDs, nerve blocks, and inhalant anesthetic reduces total drug doses and improves pain control
- Nerve blocks are now standard in TPLO anesthesia: femoral and sciatic blocks with bupivacaine reduce post-operative opioid requirements
- A published feasibility study achieved total opioid-free post-operative analgesia in TPLO dogs using nerve blocks, ketamine, isoflurane, and meloxicam
- Epidural analgesia reduces post-operative opioid requirements by 36% compared to no epidural, per PMC study data
- Food is withheld 8 to 12 hours before surgery to reduce aspiration risk; water restriction is typically shorter
Pre-anesthetic assessment
Every dog undergoing TPLO is evaluated before anesthesia to identify risk factors and optimize the anesthetic plan.
Physical examination: body weight, cardiovascular and respiratory status, mucous membrane color and capillary refill, hydration status, and assessment of concurrent conditions.
Blood work: complete blood count (CBC) detects anaemia, infection, and platelet abnormalities. Biochemistry panel assesses kidney function (creatinine, BUN), liver function (ALT, ALP, bilirubin), blood glucose, and electrolytes. These results determine anesthetic drug selection and guide fluid therapy.
ASA classification: anesthesiologists use the American Society of Anesthesiologists (ASA) physical status classification (1 to 5) to communicate overall health status. Most TPLO patients are ASA class 1 (healthy) or 2 (mild systemic disease). Dogs with significant cardiac, renal, or hepatic disease may be ASA 3 or higher and require additional monitoring or modified protocols.
Premedication
Premedication is given 20 to 40 minutes before induction.
It serves to calm the dog, reduce anxiety, provide early analgesia (preemptive analgesia), reduce the amount of induction and maintenance agent required, and make induction smoother.
Opioids (most common premedication component for TPLO):
- Hydromorphone: commonly used as a premedication; the PubMed perioperative analgesia study used hydromorphone plus acepromazine as premedication in all 56 TPLO dogs
- Methadone: provides both opioid analgesia and NMDA receptor antagonism; commonly used as a premedication in many European centres
- Morphine: used in some protocols, particularly when combined with epidural administration
Sedatives:
- Acepromazine: a phenothiazine tranquilizer that provides reliable sedation; use is reduced in patients with cardiovascular compromise due to vasodilatory effects
- Medetomidine or dexmedetomidine: alpha-2 agonists providing sedation, analgesia, and muscle relaxation; used in the opioid-free feasibility protocol (PMC 2024)
- Midazolam: benzodiazepine used particularly in geriatric or debilitated dogs for its minimal cardiovascular effects
Anesthetic induction
Induction agents produce rapid unconsciousness, allowing placement of an endotracheal tube for airway control.
Propofol: the most commonly used induction agent in healthy dogs. Provides smooth, rapid induction with a short duration, making induction-to-intubation management easy.
Alfaxalone: a neuroactive steroid with a similar profile to propofol. Used in some protocols as an alternative, particularly in smaller dogs or where propofol is not available.
Ketamine + midazolam: used in some protocols as an alternative induction combination, particularly when some degree of analgesia is desired at induction. Also used in opioid-sparing protocols.
Intraoperative maintenance
Inhalant anesthetics (isoflurane or sevoflurane) are delivered via endotracheal tube to maintain unconsciousness throughout the surgery.
Isoflurane is the most widely used agent in veterinary anaesthesia for TPLO. Sevoflurane provides faster recovery but is more expensive. Both are effective.
IV constant rate infusions (CRI) during surgery augment inhalant anesthesia and reduce inhalant requirements:
- Ketamine CRI: used in opioid-sparing protocols; the PMC feasibility study used ketamine CRI at 0.6 mg/kg/h throughout surgery
- Morphine-lidocaine-ketamine (MLK CRI): a well-established combination providing balanced intraoperative analgesia with reduced inhalant requirements
- Fentanyl CRI: an opioid CRI providing titratable intraoperative analgesia
Regional analgesia (nerve blocks)
Nerve blocks have become a key component of TPLO anesthesia because they provide superior post-operative pain control compared to systemic opioids alone.
Femoral and sciatic nerve blocks (FSNB): block the main sensory nerves to the stifle joint and hind limb. Performed before surgery with bupivacaine. PMC research comparing nerve blockade approaches for TPLO confirms that femoral and sciatic nerve blocks provide superior postoperative analgesia compared to IV CRI alone.
Lumbosacral epidural: injection of morphine and bupivacaine into the epidural space. PMC data (epidural + liposomal bupivacaine study) found epidural analgesia produced 36% fewer post-operative opioid injections compared to no epidural.
Intra-articular injection: bupivacaine injected directly into the stifle joint before or after surgery. Used as an alternative or supplement to nerve blocks in some protocols.
Intraoperative monitoring
Standard TPLO monitoring includes:
- ECG: continuous heart rate and rhythm monitoring
- Pulse oximetry (SpO2): peripheral oxygen saturation
- Capnography (end-tidal CO2): assesses ventilation adequacy; dogs are often placed on mechanical ventilation during TPLO
- Blood pressure: direct arterial or indirect Doppler/oscillometric
- Temperature: hypothermia is a common complication of long anesthetic events; warming devices are used routinely
- Depth of anesthesia assessment: clinical signs including eye position, jaw tone, and response to surgical stimulation
Post-operative pain management
TPLO is a significant orthopedic procedure and post-operative pain management directly affects recovery quality and rate of return to function.
NSAIDs: meloxicam or carprofen are administered in the peri-operative period and continued at home for 7 to 14 days minimum. The PMC opioid-free protocol administered meloxicam 0.2 mg/kg IV intraoperatively.
Opioids: hydromorphone or buprenorphine for 24 to 48 hours post-operatively, reducing as the nerve block wears off and NSAID analgesia covers the residual pain.
Gabapentin: increasingly prescribed for the first 1 to 2 weeks post-operatively to address neuropathic pain components associated with the surgical trauma and healing nerve tissues.
For the full recovery guide and what to expect after waking up, see what to expect after TPLO surgery in dogs.
For the leg shaking guide that often relates to anesthetic recovery, see dog leg shaking after TPLO surgery.
For the incontinence guide related to catheterization and anesthesia effects, see dog incontinence after TPLO surgery. For the post-surgical pain guide, see dog whining after TPLO surgery: causes and care.
Frequently asked questions
Is TPLO anesthesia safe for dogs?
For healthy adult dogs, TPLO anesthesia is considered low-risk. The most significant risks involve cardiovascular depression from the anesthetic agents and hypothermia during the procedure.
These are managed through continuous monitoring and supportive care. Pre-anesthetic blood work identifies dogs with conditions that increase risk.
How long is the dog under anesthesia for TPLO?
Total anesthesia time typically ranges from 1.5 to 2.5 hours for a standard TPLO, depending on the surgeon's experience and any complications.
Dogs are usually extubated within 15 to 30 minutes of the end of surgery as they recover consciousness.
What happens if my dog is in pain when it wakes up from TPLO?
Post-operative pain assessment is performed by the veterinary team as the dog recovers. Rescue analgesia (additional opioid doses) is given if pain scores exceed defined thresholds.
The goal of the multimodal protocol is to prevent pain peaks rather than treat pain after it occurs.
Contact the surgical team if your dog appears to be in significant pain after discharge.
My dog is older. Is anesthesia more dangerous?
Age increases anesthetic risk because older dogs are more likely to have subclinical cardiac, renal, or hepatic disease, slower drug metabolism, and reduced physiological reserve.
Thorough pre-anesthetic bloodwork and cardiac assessment (chest X-ray, echocardiogram in selected cases) helps quantify risk. The anesthetic team adjusts protocols for older patients with reduced drug doses and enhanced monitoring.
What does fasting before TPLO mean?
Food is typically withheld for 8 to 12 hours before anesthesia to reduce the risk of vomiting and aspiration during induction or recovery.
Water restriction is typically shorter often until the night before or only 2 to 4 hours before surgery.
Follow your surgeon's specific instructions, which are tailored to your dog's size and health status.
Resources
- PMC. Postoperative Opioid-Free Analgesia in Dogs Undergoing TPLO: A Feasibility Study. pmc.ncbi.nlm.nih.gov
- PMC. Incidence of Postoperative Opioids in TPLO Dogs After Liposomal Bupivacaine With or Without Morphine Epidural. ncbi.nlm.nih.gov
- PubMed. Comparison of Perioperative Analgesic Protocols for Dogs Undergoing TPLO. pubmed.ncbi.nlm.nih.gov
- PMC. Effects of Saphenous and Sciatic Nerve Blocks, Lumbosacral Epidural or MLK CRI on Postoperative Pain in TPLO Dogs. pmc.ncbi.nlm.nih.gov
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com

TPLO
5 min read
How to Confine Your Dog Post-TPLO Surgery
Keep your dog safe after TPLO surgery with smart confinement tips. Learn crate setup, barriers, and daily care for smooth healing
Confinement after TPLO surgery is not optional. It is the primary structural safeguard preventing the plate from failing before the osteotomy heals.
A dog that is allowed to run, jump, or spin in the first 8 weeks risks plate displacement -- a complication that requires revision surgery and extends recovery significantly.
Effective confinement is a practical skill that owners can prepare for before surgery.
Quick answer: Confine in a crate large enough to stand, turn, and lie but not to pace. An exercise pen works for crate-resistant dogs. A baby-gated small room is a third option. Non-slip flooring is essential. Outdoor access requires a leash. Strict confinement continues for 6 to 8 weeks.
Key takeaways
- The crate is the gold standard confinement tool: limits jumping, spinning, and running that risk plate displacement; large enough to stand and turn but not to pace
- Non-slip flooring is required in all confinement spaces: slipping generates uncontrolled leg movements that stress the plate
- Leash on the dog at all times outside the crate: every unsupervised second without a leash risks slipping or running; a house leash gives immediate control
- Exercise pens (X-pens) are a practical alternative for crate-resistant dogs: more space than a crate while still preventing free access to the rest of the house
- The confinement protocol changes weekly: strict crate-only in weeks 1 to 2, then gradual expansion as bone healing is confirmed on radiographs
- Clean bedding weekly: dirty bedding harbors S. pseudintermedius; the incision is in close contact with bedding throughout recovery
Why confinement matters
The TPLO plate holds the rotated tibial plateau in position while new bone grows across the osteotomy. The plate is strong but not indestructible.
Bone is not fully consolidated across the osteotomy for 8 to 12 weeks.
During this healing period, a dog that runs, jumps onto a sofa, slips on hardwood flooring, or spins to chase another pet can apply forces to the plate that exceed its tolerance.
Plate bending, screw loosening, or osteotomy displacement are the results. Each requires revision surgery.
SustainableVet.org confirms: dogs typically need 6 to 8 weeks of restricted activity before returning to light exercise; strict confinement ensures the bone plate stabilizes and heals properly.
Option 1: the crate
Why crates work best
A crate completely controls the dog's environment. The dog cannot run to the door, jump on the sofa, or spin in excitement. Every movement is small, controlled, and low-impact.
SustainableVet.org confirms: a crate is one of the safest ways to confine a dog after TPLO surgery; crates help prevent jumping, running, or sudden twisting that can damage the healing leg.
Crate selection
Size: the crate must be large enough for the dog to stand fully, turn around, and lie in any direction comfortably. It should NOT be large enough for the dog to trot or run inside it -- an oversized crate allows the dog to generate enough speed within the crate to create impact when stopping.
Flooring: avoid wire-bottomed crates. The dog's leg can slip through wire flooring. Use solid-floored crates or add a mat over wire flooring.
Bedding: comfortable, non-slip bedding. Memory foam dog mats are excellent for TPLO dogs -- they cushion pressure points during long rest periods.
Location: place the crate in the main family living area, not in an isolated room. Isolation increases separation anxiety and whining. A dog that can see and hear the family is calmer and more able to rest.
TPLO Info confirms: dogs do not like dirty bedding, so wash crate items at least once a week.
Transitioning a crate-naive dog
If the dog has never been crated, introduce the crate before surgery:
- Place meals in the crate with the door open for several days before surgery
- Gradually extend time inside with the door closed, building from 10 minutes to 1 hour
- Never force the dog in or use the crate for punishment
A dog that enters the crate willingly before surgery recovers with significantly less confinement-related distress.
Option 2: the exercise pen (X-pen)
An X-pen is a freestanding modular fence creating a confined area larger than a crate. It can be configured in different shapes and sizes.
TPLO Info confirms: X-pens give enough room to move while keeping the dog in one place. Larger dogs may attempt to jump over the fence and require monitoring.
Advantages: more space than a crate, reducing frustration in dogs that do not tolerate crates; can be set up in any room.
Disadvantages: requires monitoring for jumping attempts; the dog can build more momentum in a larger space; not suitable for very large or athletic dogs who can clear the fence.
Height: use a 48-inch or taller X-pen for medium and large dogs; even a non-athletic dog may clear a 36-inch pen if motivated.
Flooring inside the X-pen: place yoga mats or a rubber-backed rug inside to cover hard flooring.
When to use an X-pen: recommended after the initial 2 weeks of strictest confinement, when the dog has established initial healing and the wound is closed. Not ideal for weeks 1 to 2.
Option 3: a baby-gated small room
A bathroom, laundry room, or small bedroom can serve as a recovery room when gated with a baby gate.
Dog Knee Injury confirms: prepare your home for post-surgery by setting up a recovery space with a comfortable dog bed, non-slip flooring, and a baby gate to create a barrier.
Requirements:
- Non-slip flooring throughout (add yoga mats or rugs)
- No furniture the dog can jump onto or off
- Accessible water and food bowls at floor level
- The gate must prevent the dog exiting unsupervised
Advantages: familiar environment, easy human access, more comfortable than a crate for larger dogs.
Disadvantages: more space means more opportunity for movement; the dog can circle and pace in a room, which a crate prevents; requires strict monitoring.
Outdoor access: leash only, no exceptions
Every outdoor bathroom trip requires a leash. No exceptions.
SustainableVet.org confirms: always use a leash when outside, even for bathroom breaks; open-door access to the yard allows a dog to run, chase, or slip before the owner can intervene.
Leash length: short -- no retractable leashes. The owner must be able to prevent sudden running immediately. A 4 to 6 foot leash is appropriate.
Bathroom trip duration: 5 minutes maximum in weeks 1 to 2. Gradual increase per the vet's protocol.
Wet weather: rain and wet grass introduce bacteria to the incision area and also create slipping hazard. Time trips to avoid heavy rain where possible; carry a dry towel.
Week-by-week confinement protocol
Weeks 0 to 2 (strictest):
- Crate at all times except supervised bathroom leash walks
- 5-minute walks, 3 to 5 times daily
- E-collar on at all times
- No access to any area without owner supervision
Weeks 2 to 6 (moderate):
- Crate or X-pen when unsupervised
- Supervised time in the confinement room with owner present
- Leash walks increasing gradually per vet's direction
- E-collar until incision fully confirmed healed at 2-week recheck
Weeks 6 to 12 (graduated relaxation):
- Confinement continues but may expand to a room-sized area under supervision
- Activity increases based on radiographic findings at 6-week recheck
- Off-leash access to the house (not yard) under close supervision for some dogs, vet-directed
After 12 weeks (post-clearance):
- Full activity restriction lifted after radiographic bone healing confirmation
- Progressive return to normal environment and activity
- Still avoid high-impact play until full muscle recovery at 4 to 6 months
For the full recovery timeline, see what to expect after TPLO surgery in dogs. For keeping a dog calm during confinement, see how to keep a dog calm after TPLO surgery.
For physical therapy timing, see when to start physical therapy after TPLO surgery. For infection prevention, see post-operative care mistakes that increase TPLO infection risk.
Frequently asked questions
My dog has never been in a crate. Can I start at surgery?
Yes, but start before surgery if possible -- even a few days of crate introduction before surgery significantly reduces post-operative confinement distress.
If you cannot prepare beforehand, introduce the crate gently in the first day or two at home, using meals and treats to create positive associations.
How do I know if the crate is the right size?
The dog should be able to stand with their head up, turn in a full circle, and lie in multiple positions without being cramped.
They should NOT be able to trot or run within the crate space. If in doubt, err toward smaller.
My dog cries in the crate for hours. Is the confinement causing psychological harm?
Extended, severe crate distress may indicate inadequate pain management (the dog is in pain, not just frustrated) or genuine severe separation anxiety. Contact your vet.
Trazodone and gabapentin can significantly reduce confinement distress. Do not abandon confinement -- the physical risk of uncontrolled activity is greater than the psychological discomfort of confinement.
Can my dog sleep in my bed during recovery?
No. Jumping off the bed -- even a single time -- can displace the plate.
The dog must sleep in the crate or on a floor-level dog bed in the recovery area throughout the restriction period.
Can I let my dog outside in a fenced yard for bathroom breaks without a leash?
No. Dogs routinely run, spin, and perform sudden movements in yards even when told to go to the bathroom.
A single run to chase a squirrel or greet someone at the fence is enough to cause plate failure before the osteotomy heals. Leash only, every time.
Resources
- SustainableVet. How to Confine Your Dog Post-TPLO Surgery. sustainablevet.org
- TPLO Info. How to Confine Your Dog Post-TPLO Surgery. tploinfo.com
- Dog Knee Injury. How to Confine Your Dog After TPLO Surgery. dogkneeinjury.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com




