TPLO Implant Loosening Causes and Treatment
TPLO
X min read
Owners
Learn about TPLO implant loosening causes, symptoms, and effective treatments to help your dog recover safely after surgery.
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.

Tibial Plateau Leveling Osteotomy (TPLO) is a common surgery to fix cranial cruciate ligament injuries in dogs. However, sometimes the implants used in TPLO can loosen, causing pain and complications. Understanding TPLO implant loosening causes and treatment options is important for pet owners to ensure a smooth recovery.
This article explains why TPLO implant loosening happens, how to recognize it, and what treatment choices are available. You will learn practical information to help your dog heal well after TPLO surgery.
What causes TPLO implant loosening?
TPLO implant loosening happens when the screws or plates used to stabilize the bone move or fail to hold properly. Several factors can contribute to this problem. Knowing these causes helps prevent loosening and guides treatment decisions.
- Improper surgical technique: If the implant is not placed correctly, it may not secure the bone well, increasing the risk of loosening during healing.
- Infection at surgical site: Infection can weaken bone and soft tissues around the implant, causing instability and loosening over time.
- Poor bone quality: Dogs with weak or diseased bone may not hold implants firmly, leading to early loosening after surgery.
- Excessive activity post-surgery: Allowing the dog to move too much before healing can stress the implant and cause it to loosen.
Understanding these causes helps veterinarians and owners work together to minimize implant loosening risks after TPLO surgery.
How can you recognize TPLO implant loosening in your dog?
Detecting implant loosening early is key to preventing further damage. Owners should watch for signs that suggest the implant is not stable. These signs often appear within weeks to months after surgery.
- Increased lameness or pain: If your dog suddenly limps more or shows pain around the surgery site, it may indicate implant problems.
- Swelling or heat at incision: Infection or inflammation near the implant can cause visible swelling or warmth.
- Abnormal limb movement: Unusual wobbling or instability when walking can signal implant loosening.
- Changes in behavior: Reluctance to bear weight or decreased activity may reflect discomfort from implant issues.
If you notice these signs, consult your veterinarian promptly for evaluation and imaging tests to confirm implant status.
What diagnostic methods confirm TPLO implant loosening?
Veterinarians use several diagnostic tools to assess implant stability. Accurate diagnosis guides treatment and helps prevent complications.
- Physical examination: Palpation and manipulation of the leg can reveal abnormal movement or pain near the implant.
- Radiographs (X-rays): X-rays show implant position, bone healing, and any signs of loosening such as gaps or screw back-out.
- Advanced imaging: CT scans provide detailed views of bone and implant interfaces, useful in complex cases.
- Laboratory tests: Blood work and culture samples help detect infection that may cause loosening.
Combining these methods ensures a thorough assessment of TPLO implant condition.
What treatment options exist for TPLO implant loosening?
Treatment depends on the cause and severity of implant loosening. Early intervention improves outcomes and reduces complications.
- Restricted activity: Limiting movement helps reduce stress on the implant and supports healing.
- Antibiotic therapy: If infection is present, targeted antibiotics are essential to control bacterial growth.
- Surgical revision: In severe cases, removing or replacing the loosened implant may be necessary to restore stability.
- Supportive care: Pain management and physical therapy aid recovery and improve limb function.
Your veterinarian will tailor treatment based on your dog’s condition and response to therapy.
How can TPLO implant loosening be prevented?
Prevention focuses on careful surgery and post-operative care. Owners play a key role in following veterinary instructions to avoid complications.
- Choose experienced surgeons: Skilled surgeons reduce risks by placing implants accurately and minimizing tissue damage.
- Follow post-op restrictions: Strictly limiting your dog’s activity during healing prevents undue implant stress.
- Monitor for infection: Keeping the incision clean and watching for signs of infection helps catch problems early.
- Regular veterinary check-ups: Scheduled visits allow early detection of implant issues before they worsen.
These steps help ensure the implant remains secure and the bone heals properly after TPLO surgery.
What is the prognosis after treating TPLO implant loosening?
The outlook depends on how quickly loosening is identified and treated. Early care often leads to good recovery, while delays can cause complications.
- Early intervention success: Prompt treatment usually restores implant stability and allows normal healing.
- Complications risk: Untreated loosening can cause chronic pain, infection, or joint instability.
- Long-term function: Many dogs regain good limb use after successful treatment and rehabilitation.
- Owner compliance importance: Following veterinary advice improves healing and reduces recurrence risk.
With proper management, most dogs recover well and return to active lives after TPLO implant loosening treatment.
What are the common complications of TPLO implant loosening?
Implant loosening can lead to several complications that affect your dog’s health and recovery. Recognizing these helps in timely management.
- Infection spread: Loosened implants can harbor bacteria, causing deep infections that are harder to treat.
- Delayed bone healing: Instability slows or prevents proper bone fusion after osteotomy.
- Joint instability: Loss of implant support may cause abnormal joint movement and arthritis development.
- Chronic pain: Persistent discomfort reduces quality of life and mobility.
Early diagnosis and treatment of implant loosening minimize these risks and improve recovery chances.
Conclusion
TPLO implant loosening is a serious but manageable complication after cruciate ligament surgery in dogs. Knowing the causes, signs, and treatment options helps owners support their pets through recovery.
Early veterinary evaluation and following post-operative care instructions are essential to prevent and treat implant loosening effectively. With proper care, most dogs regain good limb function and enjoy a healthy, active life after TPLO surgery.
What are the signs of TPLO implant loosening in dogs?
Signs include increased limping, swelling or heat at the surgery site, abnormal limb movement, and reluctance to bear weight or play.
Can infection cause TPLO implant loosening?
Yes, infection weakens tissues around the implant, leading to instability and loosening if not treated promptly.
How is TPLO implant loosening diagnosed?
Diagnosis involves physical exams, X-rays, possibly CT scans, and lab tests to check for infection or implant movement.
What treatments are available for TPLO implant loosening?
Treatment includes restricted activity, antibiotics for infection, surgical revision if needed, and supportive care like pain management.
How can I prevent TPLO implant loosening after surgery?
Prevention involves choosing skilled surgeons, following strict post-op activity limits, monitoring for infection, and attending regular vet check-ups.
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Things to know

Dog Whining After TPLO Surgery: Causes and Care
After your dog undergoes TPLO surgery, you might notice whining behavior that can worry you. Dog whining after TPLO surgery is common and can signal pain, discomfort, or anxiety during recovery. Understanding why your dog whines helps you provide better care and support during this critical healing phase.
This article explains the main reasons dogs whine after TPLO surgery, how to recognize when it is normal or concerning, and what steps you can take to ease your dog's discomfort. You will learn practical tips for managing pain, preventing complications, and promoting a smooth recovery.
Why is my dog whining after TPLO surgery?
Whining after TPLO surgery usually relates to pain or discomfort from the operation. Dogs cannot tell us how they feel, so whining is one way they express distress. It can also be a sign of anxiety or frustration due to restricted movement during recovery.
Recognizing the cause of whining helps you respond appropriately to your dog's needs and avoid unnecessary stress or complications.
- Postoperative pain: Pain from the surgical site is the most common reason for whining and usually peaks in the first few days after surgery.
- Restricted mobility: Limited ability to move or walk can cause frustration and whining as your dog adjusts to the recovery process.
- Anxiety or stress: Changes in routine, confinement, and discomfort can make your dog anxious, leading to vocalization like whining.
- Need for attention: Your dog may whine to seek comfort, reassurance, or physical contact from you during recovery.
Understanding these causes allows you to provide better comfort and care to your dog after TPLO surgery.
How can I tell if my dog’s whining is normal or a sign of a problem?
Not all whining after TPLO surgery is cause for alarm. Normal whining is usually mild and occurs during movement or when your dog is settling down. However, excessive or persistent whining may indicate complications or uncontrolled pain.
Knowing the difference helps you decide when to contact your veterinarian for advice or intervention.
- Normal whining: Occurs intermittently, especially when your dog tries to move or change position, and decreases over time.
- Signs of severe pain: Loud, continuous whining combined with limping, restlessness, or refusal to bear weight may signal uncontrolled pain.
- Signs of infection: Whining with swelling, redness, discharge, or foul odor at the surgical site requires immediate veterinary attention.
- Behavioral changes: Excessive whining with aggression, lethargy, or loss of appetite may indicate complications or distress.
Monitoring your dog closely and noting changes in whining patterns helps ensure timely care and prevents worsening conditions.
What pain management options are available after TPLO surgery?
Effective pain control is essential to reduce whining and promote healing after TPLO surgery. Your veterinarian will prescribe medications and suggest supportive measures to keep your dog comfortable.
Following the prescribed pain management plan closely improves your dog's recovery experience and reduces stress for both of you.
- Prescription painkillers: Non-steroidal anti-inflammatory drugs (NSAIDs) or opioids are commonly used to control postoperative pain safely.
- Cold therapy: Applying cold packs to the surgical area can reduce swelling and numb pain during the first 48 hours after surgery.
- Physical support: Using slings or harnesses helps your dog move without putting full weight on the operated leg, reducing pain during walking.
- Environmental comfort: Providing a quiet, soft resting area minimizes discomfort and encourages rest, which reduces whining.
Always follow your veterinarian's instructions on medication dosage and duration to avoid side effects or complications.
How should I care for my dog’s surgical site to reduce discomfort?
Proper wound care after TPLO surgery helps prevent infection and reduces pain that can cause whining. Keeping the surgical site clean and protected is vital during recovery.
Regular inspection and gentle care promote healing and comfort for your dog.
- Keep the incision dry: Avoid bathing or allowing water on the surgical site until your vet confirms it is safe to do so.
- Prevent licking or chewing: Use an Elizabethan collar or protective clothing to stop your dog from irritating the wound.
- Check for signs of infection: Look for redness, swelling, discharge, or foul smell and report concerns to your vet promptly.
- Follow dressing instructions: Change bandages as directed by your veterinarian to maintain cleanliness and support healing.
Consistent care of the surgical site reduces pain and helps your dog feel more comfortable during recovery.
What activity restrictions should I follow to help my dog heal?
Limiting your dog's activity after TPLO surgery is crucial to prevent injury and reduce pain that causes whining. Controlled movement supports proper healing and avoids complications.
Understanding and enforcing these restrictions ensures your dog recovers safely and comfortably.
- Strict confinement: Keep your dog in a small area or crate to limit running, jumping, or climbing for at least 6 to 8 weeks post-surgery.
- Leash walks only: Allow short, slow leash walks for bathroom breaks, avoiding off-leash activity or rough surfaces.
- Avoid stairs: Prevent stair climbing to reduce strain on the healing leg and minimize pain.
- Gradual reintroduction: Follow your veterinarian’s guidance to slowly increase activity as healing progresses, monitoring for any signs of discomfort.
Adhering to activity restrictions helps reduce whining caused by pain or injury during recovery.
When should I contact my veterinarian about my dog’s whining?
Knowing when to seek veterinary help is important if your dog’s whining signals a problem after TPLO surgery. Prompt attention can prevent complications and improve outcomes.
Being proactive about your dog’s symptoms ensures timely care and peace of mind.
- Persistent severe whining: If your dog whines continuously and shows signs of severe pain or distress, contact your vet immediately.
- Signs of infection: Whining accompanied by swelling, redness, discharge, or fever requires urgent veterinary evaluation.
- Changes in mobility: Sudden inability to bear weight or worsening lameness with whining should be assessed by a professional.
- Behavioral or appetite changes: Excessive whining with lethargy, aggression, or loss of appetite may indicate complications needing veterinary care.
Timely communication with your veterinarian helps ensure your dog’s recovery stays on track and reduces unnecessary suffering.
Conclusion
Dog whining after TPLO surgery is a common way your pet expresses pain, discomfort, or anxiety during recovery. Understanding the reasons behind the whining helps you provide better care and comfort to your dog.
By managing pain effectively, caring for the surgical site, restricting activity, and monitoring for complications, you can support your dog's healing and reduce distress. Always consult your veterinarian if you are concerned about your dog's whining or recovery progress.
FAQs
How long does whining usually last after TPLO surgery?
Whining typically decreases within the first two weeks as pain and discomfort lessen. Persistent or worsening whining beyond this period should be evaluated by a veterinarian.
Can I give my dog over-the-counter pain medication for TPLO recovery?
Do not give over-the-counter pain medications without veterinary approval, as some can be toxic to dogs or interfere with prescribed treatments.
Is it normal for my dog to whine at night after TPLO surgery?
Yes, dogs may whine at night due to discomfort or anxiety. Providing a comfortable, quiet space and following pain management helps reduce nighttime whining.
How can I comfort my dog when it whines after surgery?
Offer gentle petting, speak softly, and stay close to reassure your dog. Avoid excessive stimulation that may increase anxiety or pain.
When can my dog start physical therapy after TPLO surgery?
Physical therapy usually begins 1 to 2 weeks post-surgery, depending on healing progress. Follow your veterinarian’s recommendations for timing and exercises.
X min read

TPLO Anesthesia Protocol in Dogs Explained
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
X min read

What Does TPLO Stand For in Veterinary Medicine?
If your dog has been diagnosed with a torn cranial cruciate ligament, you have likely encountered the acronym TPLO possibly before you knew what it meant or why it was being recommended.
TPLO is the most commonly performed CCL surgery in the US. Understanding what the acronym means helps demystify why the surgery works the way it does.
Quick answer: TPLO stands for Tibial Plateau Leveling Osteotomy: Tibial (shin bone), Plateau (upper surface forming the knee), Leveling (making the plateau closer to horizontal), Osteotomy (controlled bone cut). The surgery stabilizes the knee by rotating the tibia, making the CCL biomechanically unnecessary.
Key takeaways
- T = Tibial: the tibia, the shin bone below the knee (stifle) joint
- P = Plateau: the upper tibial surface forming the knee joint; in dogs it has a significant slope called the tibial plateau angle
- L = Leveling: reducing the tibial plateau angle to closer to parallel with the ground, changing joint biomechanics
- O = Osteotomy: a controlled surgical bone cut that allows the tibial segment to be repositioned and fixed
- TPLO does not repair the torn CCL: it changes joint geometry so the ligament becomes biomechanically unnecessary
- TPLO was first described in the early 1980s by Dr. Barclay Slocum and is now the most reliable procedure for CCL disease in dogs
Breaking down each word
T Tibial
The tibia is the main weight-bearing bone of the lower leg, running from the knee (stifle) joint to the ankle (tarsus).
In dogs, the tibia is not perfectly vertical it angles slightly forward relative to the femur above it. This angle contributes to the mechanical forces that act on the stifle during weight-bearing.
Veterinary Partner (VIN) explains: tibial refers to the shin bone.
P Plateau
The tibial plateau is the upper, relatively flat surface of the tibia that contacts the bottom of the femur to form the stifle joint.
Unlike in humans, where the tibial plateau is nearly horizontal, in dogs it has a significant slope the tibial plateau angle (TPA).
A steeper TPA creates more cranial tibial thrust during weight-bearing, which is the force that normally the CCL resists.
Veterinary Partner (VIN) defines it as: the upper surface of the shin bone; the bottom of the knee joint.
L Leveling
Leveling refers to the goal of the surgery: reducing the tibial plateau angle to approximately 5 degrees, making it closer to parallel with the ground.
When the tibial plateau is leveled, the femur no longer tends to slide forward relative to the tibia during weight-bearing the cranial tibial thrust is neutralized.
This is why a functioning CCL is no longer required after TPLO.
Veterinary Partner (VIN) defines it as: making the plateau more parallel to the ground.
O Osteotomy
An osteotomy is a controlled surgical cut through a bone a deliberate, planned fracture performed under anesthesia to allow repositioning of a bone segment.
TPLO involves a curved osteotomy through the proximal tibia, creating a segment that is rotated to the new angle and fixed with a bone plate and screws during healing.
Veterinary Partner (VIN) defines it as: a bone-cutting procedure like a controlled fracture of the bone.
Why TPLO was developed
Before TPLO, the dominant approach to CCL repair was extracapsular stabilization placing sutures outside the joint to mimic the CCL's function.
While effective in small dogs, this approach was unreliable in large, active dogs because the suture material eventually stretched or failed, and the joint depended on periarticular scar tissue for long-term stability.
Veterinary Specialty Center explains: TPLO changes the biomechanics of the knee so the joint can remain stable without relying on the damaged CCL.
Instead of replacing the torn ligament, it changes the mechanics of the knee entirely.
DVM360 confirms: TPLO alters the mechanical forces acting on the stifle, rendering the cranial cruciate ligament unnecessary.
Dr. Barclay Slocum first described TPLO in the early 1980s.
Veterinary Partner (VIN) notes that much research has been done since to refine the technique, and it has emerged as the most reliable technique for CCL disease management in dogs.
How TPLO differs from human ACL surgery
This is one of the most common points of confusion for owners.
In humans, ACL surgery typically involves replacing the torn ligament with a graft (taken from the patient's hamstring, patellar tendon, or a donor).
The new ligament is reconstructed to restore normal joint function.
TPLO does not reconstruct the CCL. It bypasses the need for a functioning CCL entirely by changing joint geometry.
Veterinary Specialty Center confirms: in people, ACL surgery replaces the torn ligament; in dogs, TPLO changes knee mechanics so the joint functions without the CCL.
This is why dogs cannot "re-tear" their CCL after TPLO there is no ligament replacement to fail. The stability provided by TPLO is structural and permanent.
What TPLO treats and who it is for
TPLO is used to treat cranial cruciate ligament (CCL) rupture the canine equivalent of the human ACL.
CCL rupture is the most common cause of hind limb lameness in dogs and costs US dog owners over $1 billion annually.
The ACVS recommends TPLO as the most commonly performed procedure for dogs over 60 lbs. It is also recommended for smaller dogs where long-term mechanical stability and minimal arthritis progression are priorities.
For the surgical causes guide, see what causes TPLO surgery to be needed in dogs. For the full surgical overview, see what is TPLO surgery in dogs?.
For the pros and cons of the procedure, see TPLO surgery pros and cons for dogs.
Frequently asked questions
Does TPLO stand for the same thing in all dogs?
Yes. The acronym and the procedure are the same regardless of breed, size, or the specific implant system used (Arthrex or Synthes).
The variation between cases is in the amount of tibial rotation required (based on the individual TPA), the plate size selected, and the post-operative protocol.
Is TPLO the same as TTA?
No. TTA (Tibial Tuberosity Advancement) is a different procedure with a similar goal both change knee biomechanics rather than replacing the CCL.
TTA advances the tibial tuberosity cranially rather than rotating the tibial plateau. They achieve knee stabilization through different geometric approaches.
Why is it called leveling if the bone is rotated?
The rotation of the tibial bone segment achieves the leveling.
When the proximal tibial segment is rotated, the angle of the tibial plateau changes it becomes less sloped, i.e., more level relative to the ground.
The procedure is named for the result (leveling) rather than the method (rotation).
Was TPLO invented for dogs?
Yes. TPLO was developed specifically for veterinary use in dogs in the early 1980s by Dr. Barclay Slocum.
It was developed because the canine stifle's anatomy and biomechanics differ significantly from the human knee particularly the steep tibial plateau angle that is uniquely problematic in dogs.
Why is TPLO preferred over other CCL surgeries for large dogs?
Large, active dogs generate higher joint forces than small dogs.
Extracapsular repair (lateral suture) provides stability through scar tissue formation adequate for small dogs but inadequate for the forces generated by large, active breeds.
TPLO provides bone-based mechanical stability that is not dependent on scar tissue, making it more durable and reliable for larger patients.
Resources
- Veterinary Partner (VIN). TPLO Surgery. veterinarypartner.vin.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO). vcahospitals.com
- DVM360. Understanding Tibial Plateau Leveling Osteotomies in Dogs. dvm360.com
- Veterinary Specialty Center. TPLO Surgery for Dogs. vetspecialty.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
X min read

Arthrex TPLO Plate Overview and Use
The Arthrex TPLO plate is a specialized orthopedic implant designed to stabilize the tibia after a tibial plateau leveling osteotomy (TPLO) surgery in dogs. TPLO surgery is a common procedure to treat cranial cruciate ligament (CCL) rupture, which causes lameness and pain in dogs. Understanding the Arthrex TPLO plate helps pet owners and veterinarians appreciate how this device supports bone healing and restores limb function.
This article explains what the Arthrex TPLO plate is, how it is used during surgery, its design features, and the benefits it offers. You will learn about the surgical technique, implant materials, and postoperative care to ensure the best outcomes for dogs undergoing TPLO surgery.
What is the Arthrex TPLO plate?
The Arthrex TPLO plate is a metal implant used to fix the tibia after cutting and rotating the bone during TPLO surgery. It holds the bone segments securely to allow proper healing and restore normal joint mechanics. The plate is contoured to fit the shape of the canine tibia and is available in various sizes to match different dog breeds and sizes.
The plate works together with locking screws that provide stable fixation without compressing the bone excessively. This design helps reduce complications and promotes faster recovery.
- Purpose of the plate: It stabilizes the tibia after osteotomy, maintaining the new bone angle to prevent joint instability and lameness.
- Material composition: Made from medical-grade stainless steel or titanium, ensuring strength, biocompatibility, and corrosion resistance.
- Plate design: Anatomically contoured to match the tibial shape, minimizing soft tissue irritation and improving fit.
- Locking screw system: Uses locking screws that lock into the plate, providing angular stability and reducing screw loosening risks.
These features make the Arthrex TPLO plate a reliable choice for TPLO surgeries in veterinary orthopedics.
How is the Arthrex TPLO plate used in surgery?
During TPLO surgery, the surgeon makes a curved cut in the tibia and rotates the bone segment to change the slope of the tibial plateau. The Arthrex TPLO plate is then applied to hold the bone in its new position. Proper placement and fixation are critical for successful healing and restoring limb function.
The surgical steps include precise measurement, plate selection, and screw placement to ensure stability and avoid complications.
- Osteotomy procedure: The tibia is cut using a saw guided by a jig to create a controlled curved osteotomy.
- Plate positioning: The Arthrex TPLO plate is aligned over the osteotomy site to match the bone contour and rotated segment.
- Screw insertion: Locking screws are placed through the plate holes into the bone, securing the plate firmly.
- Verification of stability: The surgeon checks the fixation and limb alignment before closing the surgical site.
Following these steps ensures the plate supports the bone during healing and helps the dog regain normal limb use.
What are the advantages of using the Arthrex TPLO plate?
The Arthrex TPLO plate offers several benefits compared to traditional fixation methods. Its design and materials improve surgical outcomes and reduce postoperative complications. These advantages contribute to faster recovery and better function for dogs after TPLO surgery.
Understanding these benefits helps veterinarians choose the best implant for their patients.
- Enhanced stability: Locking screw technology provides rigid fixation, reducing micromotion and promoting bone healing.
- Reduced soft tissue damage: Anatomical contouring minimizes irritation and inflammation around the implant site.
- Corrosion resistance: High-quality materials prevent implant degradation and inflammatory reactions over time.
- Versatility in sizes: Multiple plate sizes accommodate different dog breeds, ensuring proper fit and function.
These features make the Arthrex TPLO plate a preferred choice for many veterinary surgeons performing TPLO surgeries.
What materials are used in the Arthrex TPLO plate?
The Arthrex TPLO plate is manufactured from biocompatible metals that provide strength and durability while minimizing adverse tissue reactions. The choice of materials affects the plate’s performance and long-term safety.
Knowing the materials helps veterinarians and pet owners understand implant behavior inside the body.
- Stainless steel: Commonly used for its strength, corrosion resistance, and affordability in orthopedic implants.
- Titanium alloy: Offers excellent biocompatibility, lighter weight, and reduced risk of allergic reactions.
- Surface finish: Smooth, polished surfaces reduce tissue irritation and bacterial adhesion risks.
- Radiopacity: Materials allow clear X-ray visualization to monitor implant position during follow-up.
These material properties ensure the Arthrex TPLO plate performs well during the healing process and remains safe long term.
How does the Arthrex TPLO plate support postoperative recovery?
Postoperative care is essential for successful healing after TPLO surgery using the Arthrex TPLO plate. The implant provides stable fixation, but proper management of the dog’s activity and monitoring are critical to prevent complications.
Understanding the role of the plate in recovery helps owners follow veterinary instructions effectively.
- Early weight bearing: Stable fixation allows controlled limb use soon after surgery, promoting muscle strength and joint mobility.
- Reduced risk of implant failure: Locking screws and plate design minimize loosening or breakage during recovery.
- Radiographic monitoring: Regular X-rays check bone healing and implant position to detect issues early.
- Physical therapy support: Rehabilitation exercises complement implant stability to restore normal gait and function.
Following these guidelines helps dogs recover faster and return to normal activity safely.
What complications can occur with the Arthrex TPLO plate?
While the Arthrex TPLO plate is designed to reduce complications, some risks remain. Awareness of potential problems helps veterinarians and owners recognize signs early and take action.
Most complications relate to surgical technique, implant placement, or postoperative care.
- Infection risk: Surgical site infections can occur, requiring antibiotics or implant removal in severe cases.
- Implant loosening: Poor screw fixation or excessive activity may cause the plate to loosen, affecting stability.
- Delayed bone healing: Factors like poor blood supply or infection can slow osteotomy healing despite stable fixation.
- Soft tissue irritation: Improper plate positioning may cause discomfort or swelling around the implant.
Close follow-up and adherence to postoperative instructions minimize these risks and improve outcomes.
Conclusion
The Arthrex TPLO plate is a vital implant in veterinary orthopedics for treating cranial cruciate ligament injuries in dogs. Its specialized design and locking screw system provide stable fixation, promote bone healing, and support early recovery.
Understanding the plate’s features, surgical use, and postoperative care helps pet owners and veterinarians ensure the best results after TPLO surgery. Proper implant selection and management reduce complications and help dogs regain normal limb function safely.
What sizes does the Arthrex TPLO plate come in?
The Arthrex TPLO plate is available in multiple sizes ranging from small to large to fit different dog breeds and tibial dimensions accurately.
Can the Arthrex TPLO plate be removed after healing?
Implant removal is not routinely required but may be performed if the dog experiences irritation, infection, or implant-related complications after bone healing.
How long does it take for the bone to heal with the Arthrex TPLO plate?
Bone healing typically takes 8 to 12 weeks, depending on the dog's age, health, and postoperative care quality.
Is the Arthrex TPLO plate MRI compatible?
Plates made from titanium alloys are generally MRI compatible, while stainless steel plates may cause artifacts or interference during imaging.
What postoperative care is recommended after TPLO surgery with this plate?
Recommended care includes restricted activity, pain management, physical therapy, and regular veterinary check-ups with radiographic monitoring to ensure proper healing.
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
X min read

When to Start Physical Therapy After TPLO Surgery
Physical therapy after TPLO begins on day one -- not after the bone heals. The question is not whether to start, but which type is appropriate at each stage.
Early rehabilitation is about pain management and encouraging weight bearing. Later rehabilitation is about restoring muscle mass, range of motion, and functional strength.
The timing for each phase is defined by healing biology, not by how the dog appears to feel.
Quick answer: Physical therapy begins on day 1 with leash walks and cold therapy. Passive range-of-motion exercises start at days 3 to 5. Hydrotherapy begins at weeks 2 to 3. Strengthening increases from weeks 4 to 8. Plans complete by weeks 8 to 12; full recovery takes 4 to 6 months after TPLO surgery.
Key takeaways
- Leash walking begins within 24 hours of surgery: TPLO Info confirms short 5-minute walks multiple times daily from day 1; early weight bearing maintains muscle mass and bone healing
- Passive range-of-motion exercises start at days 3 to 5: gentle manual flexion and extension of the stifle maintains joint mobility during restricted activity
- Hydrotherapy can begin around weeks 2 to 3 after incision healing is confirmed; underwater treadmill provides resistance and buoyancy simultaneously
- Professional rehabilitation offers advantages over at-home protocols: certified therapists provide therapeutic laser, TENS, underwater treadmill, and individualized monitoring
- Strengthening exercises begin around weeks 3 to 4 when the dog consistently bears weight; cavaletti poles, weight-shifting, and balance work rebuild lost muscle
- Free running and high-impact activities resume only after radiographic bone healing confirmation at weeks 8 to 12; earlier return risks osteotomy failure
Phase 1: immediate post-surgical period (days 1 to 14)
What begins immediately
Leash walking: begins within 24 hours of surgery. TPLO Info confirms short 5-minute leash walks multiple times daily from day one. These walks are bathroom trips only in the first week -- not exercise walks. The goal is to maintain the neural stimulus for weight bearing and to prevent the complete disuse that leads to rapid muscle atrophy.
Veterinary Partner VIN confirms: Phase 1 begins immediately after surgery; slow, controlled leash walks 3 to 4 times daily for 5 to 10 minutes are the primary activity.
Cold therapy (icing): ice applied to the incision site for 10 to 15 minutes after each walk during the first 3 to 5 days. TPLO Info recommends icing the incision directly for the first 3 to 5 days post-surgery. Cold therapy reduces local inflammation and pain, making the dog more comfortable and more likely to bear weight.
Edmonton Veterinary TPLO protocol confirms: time physical therapy exercises approximately 30 minutes after pain medications are given so the dog is most comfortable during exercise.
Passive range-of-motion exercises (days 3 to 5)
PROM exercises are gentle manual flexion and extension of the stifle joint. SustainableVet.org confirms: gentle passive exercises usually start within 3 to 5 days post-surgery.
How to perform PROM:
- Hold the thigh and lower leg, not the joint itself
- Slowly flex the stifle toward the chest (as far as comfortable without resistance)
- Slowly extend the stifle toward straight
- 5 to 10 repetitions, 2 to 3 times daily
- Never force the range -- stop at the point of resistance or discomfort
PROM maintains joint cartilage health, prevents fibrous tissue formation in the joint, and maintains range of motion during the period when the dog is resting.
Phase 2: early rehabilitation (weeks 2 to 4)
What begins at the 2-week recheck
The 2-week recheck confirms incision healing and reviews early recovery. If healing is proceeding normally, Phase 2 activities begin.
Increased leash walk duration: TPLO Info recommends increasing walk duration by up to 5 minutes per week from the 2-week baseline. Vetplayas confirms: by week 2, controlled leash walks should be extended to promote muscle strength and flexibility.
Hydrotherapy: SustainableVet.org and the Vetplayas recovery guide both confirm hydrotherapy can begin around week 2 to 3, once the incision is healed. Underwater treadmill therapy provides three simultaneous benefits:
- Buoyancy reduces joint loading while still requiring weight bearing
- Water resistance builds muscle without impact
- Warmth promotes circulation and reduces stiffness
Professional hydrotherapy (certified facility with underwater treadmill) is preferable to open-water swimming in the early phase -- controlled depth and therapist supervision improve safety.
Balance training (from week 3 to 4): TPLO Info confirms that once the dog is consistently bearing weight on the operated leg (typically around weeks 3 to 4), weight-shifting exercises can begin. Stand the dog on a non-slip surface and gently push the hindquarters from side to side -- the dog responds by shifting weight to maintain balance, which activates the hip stabilizers.
Phase 3: progressive strengthening (weeks 4 to 8)
Core strengthening and higher-level exercises
Veterinary Partner VIN confirms: Phase 2 (which overlaps with what most owners call weeks 3 to 8) involves core strengthening once sufficient basic strength is achieved.
Activities that begin in weeks 4 to 8 (vet-directed):
- Cavaletti poles: slow stepping over low poles placed on the ground; encourages deliberate limb placement and hip flexion
- Hill walking: gentle inclines on a leash (begin by week 6 in most protocols)
- Sit-to-stand exercises: transitions from sitting to standing strengthen hip extensors
- Balance board or wobble board exercises: builds proprioception and stabilizer strength
WM-Referrals TPLO physiotherapy protocol confirms: start hydrotherapy, cavaletti poles, and balance board work at week 6; progress to 30 to 40 minute walks by this phase.
6-week radiograph checkpoint: activity level in Phase 3 is calibrated against radiographic findings at the 6-week visit. If bone healing is progressing well, activities increase as above. If healing is delayed, Phase 3 activities are deferred.
Phase 4: return to function (weeks 8 to 12 and beyond)
Radiographic confirmation at 8 to 12 weeks
SustainableVet.org confirms: most structured plans complete within 8 to 12 weeks. By 4 to 6 months, most dogs regain full mobility including running and playing.
After the 12-week radiograph confirms bone healing:
- Progressive jogging on leash
- Longer off-leash exploration in controlled environments
- Return to normal activity for most dogs
- Athletes and working dogs continue structured rehab for 4 to 6 months
Professional rehabilitation vs. at-home protocols
When professional rehab is recommended
TPLO Info confirms: ideally every dog would follow up with a rehabilitation therapist so a doctor can develop an individualized protocol. Professional rehabilitation is particularly beneficial when:
- The dog is slow to bear weight
- Significant muscle atrophy is present at the 6-week recheck
- The dog is a working dog, sports dog, or agility competitor
- Progress has stalled at any phase of recovery
What professionals offer
Certified canine rehabilitation therapists (CCRPs) provide:
- Therapeutic laser (reduces inflammation, promotes tissue healing)
- Transcutaneous electrical nerve stimulation (TENS) for pain management
- Controlled underwater treadmill protocols
- Individualized exercise prescription based on daily assessment
- Early detection of complications (inappropriate gait patterns, asymmetric muscle development)
At-home protocols
At-home rehabilitation following the vet's guidelines is appropriate for most dogs.
The core elements -- short leash walks, PROM exercises, cold therapy, gradual activity increase, and balance work -- are all achievable at home with proper instruction.
For the recovery timeline overview, see what to expect after TPLO surgery in dogs. For PROM exercises specifically, see PROM exercises for dogs after TPLO surgery.
For range-of-motion exercises, see TPLO range-of-motion exercises for dogs. For rehab exercise detail, see TPLO rehab exercises for dogs.
Frequently asked questions
Can physical therapy start before the incision heals?
Yes -- the early elements (leash walking, cold therapy, and PROM exercises) begin before the incision is fully healed, typically from day 1 to 5 onward.
Hydrotherapy and balance work require incision healing confirmation, typically at the 2-week recheck.
Is professional physical therapy necessary for TPLO recovery?
Not strictly necessary for all dogs, but beneficial for those recovering slowly, those with significant muscle atrophy, and working or sport dogs. At-home protocols following vet instructions are appropriate for most dogs.
Professional rehab adds precision and advanced modalities.
How often should my dog have hydrotherapy sessions?
Typically 1 to 3 times per week during the active rehabilitation phase (weeks 2 to 8). Frequency depends on the dog's response, transportation constraints, and cost.
Each session's therapeutic benefit persists for several days, so daily hydrotherapy is not required.
What if my dog refuses to use the leg despite physical therapy?
Persistent non-weight-bearing beyond 3 to 4 weeks warrants veterinary investigation. Possible causes include inadequate pain control, implant complication, late meniscal tear, or infection.
Physical therapy cannot proceed normally until the underlying cause of non-weight-bearing is addressed.
Can I use a swimming pool at home for hydrotherapy?
Only with vet guidance and with the dog supervised at all times. Open water swimming is less controlled than an underwater treadmill.
Risks include the dog launching themselves off the pool edge (impact on landing), inability to control depth, and water contamination of the incision if not fully healed.
Resources
- TPLO Info. Rehabilitation After TPLO Surgery. tploinfo.com
- Veterinary Partner VIN. Physical Rehabilitation of Dogs Following TPLO. veterinarypartner.vin.com
- SustainableVet. TPLO Rehab Exercises for Dogs. sustainablevet.org
- WM Referrals. Post-operative Rehabilitation After TPLO. wm-referrals.com
X min read

Laser Therapy for Dogs After TPLO Surgery
Laser therapy also called photobiomodulation (PBMT) or low-level laser therapy (LLLT) is one of the most commonly offered adjunct treatments during TPLO recovery. Many specialist and rehabilitation centres include it routinely.
But the evidence for its benefits is more nuanced than the marketing suggests, and owners deserve an honest picture of what it does and does not reliably achieve.
Quick answer: Laser therapy after TPLO uses specific light wavelengths to reduce inflammation and support tissue healing. Evidence for early pain reduction is moderately supported; evidence for improved radiographic bone healing is weak. It is a safe adjunct but should not replace rehabilitation exercises, pain medication, or activity restriction.
Key takeaways
- Laser therapy reduces postoperative inflammation and may improve gait scores: a TPLO study found better hindlimb function at 8 weeks in treated dogs
- Evidence for improving radiographic bone healing is weak: three controlled studies found no statistically significant difference in healing time
- The 2024 AVMA randomized trial found no significant difference in CRP, weight bearing, pain scores, or SSI rates between PBMT and sham groups
- Sessions typically begin within the first few days of surgery and continue through the rehabilitation phase
- Laser therapy is safe with few contraindications: avoid eyes and active tumour sites; safe over the TPLO incision once closed
- It works best as part of a multimodal plan: exercise therapy and pain medication carry stronger evidence than laser alone
What laser therapy does
Laser therapy for dogs, also known as photobiomodulation, involves using specific wavelengths of light to penetrate tissues and promote cellular regeneration and healing. The laser light stimulates the production of ATP (adenosine triphosphate), enhancing cell repair and growth, reducing inflammation, and increasing blood circulation.
Photobiomodulation therapy has been shown to decrease inflammation, and increase analgesia, vascularization, and tissue healing after musculoskeletal injury or surgery.
The mechanism is photochemical: light energy at specific wavelengths (typically 630 to 980 nm) is absorbed by mitochondria.
This increases ATP production, modulates reactive oxygen species, and influences gene expression related to inflammation and healing.
The effects are local confined to the tissue depth the light reaches.
For post-TPLO use, the targets are: the surgical incision, the osteotomy site in the proximal tibia, and the surrounding periarticular soft tissues.
What the clinical evidence shows
Pain and function
Research following TPLO surgery showed that dogs receiving LLLT had better hindlimb function and gait scores at 8 weeks compared to controls. This is especially valuable in orthopedic recovery, where early weight-bearing can prevent muscle atrophy and joint stiffness.
In a controlled veterinary study, dogs with surgical incisions treated with laser therapy exhibited significantly less inflammatory cell infiltration and tissue necrosis within the first week post-op compared to untreated controls.
The 2024 randomized trial
54 client-owned dogs with CCL rupture undergoing unilateral TPLO surgery were enrolled. The study population was randomly assigned to either a treatment group receiving PBMT (24 dogs) or a control group (30 dogs). PBMT was performed immediately after induction, and at 6 hours, 24 hours, 48 hours, and 8 weeks postoperatively. Evaluation of CRP, pain scores, evidence of SSI, and percentage weight bearing were assessed at all time points.
The trial found the therapy showed promise but no statistically significant difference between groups on any primary outcome measure.
Bone healing
Three studies compared LLLT to a control and concluded that LLLT treatment did not make a significant difference in improving radiographic bone healing. The studies collectively provide weak evidence for this outcome.
This is an important distinction: laser therapy may support soft tissue healing, pain, and early function but it does not appear to accelerate the osteotomy healing visible on radiographs.
When to start and how often
Laser therapy uses focused light energy on the surgical site to support healing.
Most rehabilitation programmes begin laser therapy within the first 1 to 3 days after TPLO surgery, often at the surgical centre before discharge or at the first rehabilitation visit.
Typical post-TPLO laser protocol:
- Frequency: 3 to 5 sessions per week in the first 2 to 3 weeks
- Frequency: 1 to 2 sessions per week from weeks 3 to 8
- Session duration: 5 to 15 minutes depending on the laser system and dosing protocol
- Total sessions: typically 6 to 12 in the first 8-week recovery phase
The protocol varies by laser system, power output, and the individual patient's response.
Realistic expectations
Laser therapy is a useful adjunct in TPLO recovery. It is not a substitute for the treatments with stronger evidence: pain medication, activity restriction, and structured rehabilitation exercises.
Laser therapy could be particularly helpful for dogs with weight-bearing and gait issues while recovering from TPLO surgery after a cruciate injury.
Dogs with significant early swelling, wound sensitivity, or slow initial weight-bearing progress may benefit most. Dogs recovering well with standard multimodal analgesia and rehabilitation may show less measurable difference.
For the bone healing timeline that laser therapy supports during recovery, see TPLO bone healing time in dogs explained.
For the full recovery plan that laser therapy fits into, see 10 essential TPLO recovery tips for pet owners.
For the physical therapy that is the primary evidence-based adjunct, see when to start physical therapy after TPLO surgery.
For swelling management in the recovery period, see how long does swelling last after TPLO surgery.
Frequently asked questions
Is laser therapy safe over the TPLO incision?
Yes, once the incision is closed. Laser therapy is safe over sutured incisions and can be applied at the surgical site from the first post-operative day in most protocols.
Avoid direct application over open wounds or actively infected tissue.
How many laser sessions does a dog need after TPLO?
Typically 6 to 12 sessions across the first 8 weeks.
Start at 3 to 5 sessions per week for the first 2 to 3 weeks, tapering to 1 to 2 per week through the rehabilitation phase.
The exact protocol depends on the laser system and rehabilitation plan.
Does laser therapy replace pain medication after TPLO?
No. Laser therapy is an adjunct to pharmaceutical pain management, not a replacement. Post-TPLO pain management requires NSAIDs, and often gabapentin or other analgesics.
Laser therapy may reduce the pain burden and support earlier mobility but does not provide sufficient analgesia on its own.
Can I do laser therapy at home with a consumer device?
Consumer-grade red light therapy devices exist but operate at lower power densities than veterinary therapeutic lasers. The clinical evidence discussed in this article relates to veterinary-grade PBMT devices.
Home devices may offer some benefit but cannot replicate the dosing of professional equipment. Discuss with your rehabilitation veterinarian before purchasing.
Will laser therapy prevent my dog from needing more medication?
Possibly. If laser therapy reduces post-operative inflammation and pain, some dogs may need lower doses of pain medication or taper off sooner.
This should be guided by your veterinarian based on your dog's individual recovery trajectory.
Resources
- AVMA Journal. Photobiomodulation Therapy in Dogs Undergoing TPLO After Cranial Cruciate Ligament Rupture. avmajournals.avma.org
- Veterinary Evidence. Does LLLT Improve Radiographic Healing for Dogs with CCL Rupture Undergoing TPLO Surgery? veterinaryevidence.org
- AKC. Laser Therapy For Dogs: Uses, Side Effects, and Alternatives. akc.org
- Erchonia. Laser Therapy for Post-Surgical Recovery in Pets. erchonia.com
X min read

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

When Can I Bathe My Dog After TPLO Surgery?
After your dog undergoes TPLO surgery, you may wonder when it is safe to bathe them. TPLO surgery is a common procedure to repair a torn cranial cruciate ligament in dogs. Proper post-operative care, including bathing, is essential to ensure a smooth recovery and avoid complications.
This article explains when you can bathe your dog after TPLO surgery, how to protect the surgical site, and what precautions to take during the healing process. You will learn practical tips to keep your dog clean without risking infection or delayed healing.
When Can I Bathe My Dog After TPLO Surgery?
The general recommendation is to avoid bathing your dog for at least 10 to 14 days after TPLO surgery. This time allows the incision to begin healing and reduces the risk of infection. Bathing too early can expose the wound to moisture and bacteria, which can cause complications.
Once the incision is fully closed and your veterinarian gives the go-ahead, you can bathe your dog carefully. It is important to keep the surgical site dry and clean during the initial healing phase.
- Healing time frame: Most veterinarians advise waiting 10 to 14 days before bathing to allow the incision to close properly and reduce infection risk.
- Veterinary approval: Always consult your vet before bathing to ensure the wound has healed enough for water exposure.
- Incision protection: Keep the surgical site dry and avoid direct water contact until fully healed to prevent complications.
- Signs of healing: Look for a dry, closed incision without redness or discharge before considering a bath.
Following these guidelines helps protect your dog’s surgical site and supports a healthy recovery.
How Should I Protect My Dog’s Incision When Bathing?
When your vet approves bathing, protecting the incision is crucial. You want to avoid water, soap, or shampoo reaching the surgical site. Using gentle methods can keep your dog clean without risking infection or irritation.
Proper protection also helps prevent your dog from licking or scratching the incision, which can delay healing.
- Use waterproof covers: Apply a waterproof bandage or plastic wrap over the incision to keep it dry during baths.
- Gentle cleaning: Use a damp cloth to clean areas away from the incision instead of full baths initially.
- Mild shampoos: Choose vet-recommended, gentle shampoos to avoid skin irritation around the surgery site.
- Dry thoroughly: After bathing, dry your dog carefully, especially near the incision, to prevent moisture buildup.
These steps help maintain cleanliness while protecting the surgical site during recovery.
What Are the Risks of Bathing Too Soon After TPLO Surgery?
Bathing your dog too soon after TPLO surgery can lead to several complications. The main concern is infection, which can delay healing or require additional treatment. Moisture can also weaken the incision and cause the sutures or staples to loosen.
Understanding these risks helps you avoid mistakes that could harm your dog’s recovery.
- Infection risk: Water exposure can introduce bacteria into the incision, causing infection and inflammation.
- Delayed healing: Moisture can soften the skin and slow the natural healing process of the wound.
- Suture damage: Wet sutures or staples may loosen or fall out prematurely, risking wound reopening.
- Increased discomfort: Bathing too early can cause pain or irritation at the surgery site, stressing your dog.
Waiting the recommended time and following vet advice reduces these risks significantly.
How Can I Keep My Dog Clean Without Bathing After Surgery?
Since full baths are not recommended immediately after TPLO surgery, there are alternative ways to keep your dog clean. These methods help maintain hygiene without exposing the incision to water.
Using gentle cleaning techniques and monitoring your dog’s activity can keep them comfortable and clean during recovery.
- Spot cleaning: Use a damp cloth or pet wipes to clean dirty areas away from the incision gently.
- Dry shampoo: Apply vet-approved dry shampoo powders or sprays to absorb oils and dirt without water.
- Limit outdoor exposure: Avoid muddy or wet areas to keep your dog cleaner between cleanings.
- Regular brushing: Brush your dog’s coat to remove dirt and loose hair, promoting cleanliness without bathing.
These alternatives help maintain hygiene while protecting the surgical site during healing.
What Signs Should I Watch for Around the Incision?
Monitoring your dog’s incision daily is important to catch any problems early. Knowing what signs indicate infection or delayed healing can help you seek veterinary care promptly.
Early detection of issues can prevent complications and support a faster recovery.
- Redness and swelling: Persistent or worsening redness and swelling around the incision may signal infection.
- Discharge or odor: Any pus, blood, or foul smell from the wound requires immediate veterinary attention.
- Excessive licking: If your dog licks or chews the incision excessively, it can cause damage and delay healing.
- Opening of the wound: If the incision starts to open or bleed, contact your vet right away.
Keeping a close eye on these signs ensures timely care and prevents serious complications.
How Can I Help My Dog Stay Comfortable During Recovery?
Comfort is key to a smooth recovery after TPLO surgery. Managing pain, limiting activity, and protecting the incision all contribute to your dog’s well-being.
Taking simple steps can reduce stress and support healing during this critical time.
- Pain management: Follow your vet’s instructions on pain medications to keep your dog comfortable.
- Restricted activity: Limit running, jumping, and rough play to prevent strain on the surgery site.
- Use an Elizabethan collar: Prevent your dog from licking or biting the incision with a cone or collar.
- Provide a clean resting area: Keep your dog’s bedding clean and dry to avoid contamination of the wound.
These measures help your dog heal faster and reduce the chance of complications.
Conclusion
Bathing your dog after TPLO surgery requires careful timing and protection of the surgical site. Waiting at least 10 to 14 days before bathing helps prevent infection and supports proper healing. Always follow your veterinarian’s advice and watch the incision closely for any signs of problems.
Using alternative cleaning methods and protecting the incision during baths ensures your dog stays clean and comfortable throughout recovery. With proper care, your dog can heal well and return to normal activities safely.
FAQs
Can I use a wet cloth to clean my dog before the incision heals?
Yes, you can use a damp cloth to gently clean areas away from the incision, but avoid touching or wetting the surgical site until fully healed.
When can my dog swim again after TPLO surgery?
Swimming should be avoided until the incision is fully healed and your vet approves, usually several weeks after surgery to prevent infection and injury.
What should I do if the incision gets wet accidentally?
If the incision gets wet, dry it gently with a clean towel and contact your vet for advice to prevent infection or complications.
Are there special shampoos recommended after TPLO surgery?
Use mild, vet-approved shampoos that are gentle on sensitive skin and avoid harsh chemicals that could irritate the incision area.
How often should I check my dog’s incision during recovery?
Check the incision at least once daily for redness, swelling, discharge, or other signs of infection to catch problems early and seek veterinary care if needed.
X min read

Why Is My Dog's Leg Clicking After TPLO Surgery?
A clicking or popping sound from the stifle after TPLO surgery is a common observation that owners report, especially during the first weeks of recovery.
It is not automatically a sign of a problem.
The clinical significance depends on what accompanies the click: is the dog bearing weight and recovering normally, or is clicking associated with lameness, pain, or a trajectory reversal?
Quick answer: Post-TPLO clicking most often reflects normal joint adjustment, soft tissue movement, or cavitation. The most clinically important cause is a meniscal tear, producing a meniscal click with pain and returning lameness. Clicking without lameness or pain in early recovery is usually benign.
Key takeaways
- Most post-TPLO clicking is benign: the click typically comes from joint adjustment to new mechanics; the dog usually feels fine even when a sound is present
- The meniscal click is the clinically significant type: dogs with meniscal tears exhibit a meniscal click accompanied by lameness and pain
- Clicking with lameness or pain warrants prompt veterinary evaluation: clicking with swelling, limping, or avoiding the leg could signal instability, implant issues, or a torn meniscus
- Clicking that is isolated, early in recovery, and not associated with lameness is usually normal and improves as healing progresses
- Late-onset clicking in a previously normal recovery is more concerning than early clicking; it suggests a new event such as meniscal tear or implant loosening
- Implant loosening is a rare but serious cause of clicking: abnormal joint mechanics from loosened screws or plate produce clicking accompanied by pain and radiographic changes
What causes clicking after TPLO surgery
Normal joint adjustment
After TPLO, the tibial plateau is repositioned to a new angle. The soft tissues, tendons, and joint capsule require weeks to adapt to this new geometry.
During this adaptation period, movement can produce audible sounds as structures slide over each other or snap slightly over new contours.
TPLO Info confirms: after CCL repair, the joints adjust to new motion. The click comes from the knees. The dog usually feels fine even when a sound is present.
Soft tissue movement over the implant
The TPLO plate sits against the medial tibial surface. Tendons and fascial layers that previously moved over the normal tibial contour now move over a plate with a different profile.
This can produce audible snapping or clicking sounds during flexion and extension, particularly in the first weeks before soft tissue accommodation occurs.
Gas bubble release (cavitation)
Joint capsule distension from post-surgical effusion can trap gas in the joint space. Movement releases this gas in small pops -- the same mechanism as knuckle cracking in humans.
This is painless and harmless.
Meniscal click (most significant cause)
The medial meniscus is vulnerable to injury in CCL disease. At the time of TPLO, the surgeon assesses the meniscus and removes damaged tissue.
However, meniscal injury can occur after TPLO -- either from previously undetected damage that progresses, or from new injury in a joint that has not yet fully stabilized.
Laguna Woods Vets confirms: dogs with meniscal tears frequently exhibit a meniscal click. If damage is noted during TPLO, the meniscus is removed. If not removed, it may tear later.
SustainableVet.org confirms: symptoms of meniscal damage include clicking when the dog moves, lameness, reluctance to use the affected leg, and discomfort when bending the knee.
The meniscal click is distinguished from benign clicking by:
- Accompanying lameness (often a sudden return of limping after initial improvement)
- Pain when the stifle is manipulated on examination
- Worsening trajectory rather than improvement
Implant-related clicking (uncommon)
Plate or screw loosening generates abnormal tibial motion during weight bearing, which can produce clicking.
This is uncommon in an uncomplicated TPLO but more likely if the dog has been overactive during recovery.
Signs include pain localized to the plate site and radiographic evidence of implant migration or peri-implant bone changes.
SustainableVet.org confirms: implant failure is rare but serious; plates or screws can loosen or break if the dog is too active early, leading to discomfort and joint noises.
Normal vs. concerning clicking: a practical guide
Likely normal (benign):
- Clicking present from the first days after surgery
- No lameness associated with the click
- Dog is bearing weight and improving week by week
- Click is quiet and intermittent
- Dog does not react (wince, pull back, vocalize) when the stifle is manipulated
Warrants veterinary evaluation:
- Clicking that appears new after a period of recovery without clicking
- Clicking accompanied by lameness or reluctance to bear weight
- Dog flinches or vocalizes when the stifle is flexed
- Clicking that is getting louder or more frequent over time
- Lameness that had been improving and then reverses
SustainableVet.org confirms: contact your vet if the clicking sound is persistent or getting worse over time; a mild clicking early in recovery is normal but it should improve as healing progresses.
Meniscal tear after TPLO: what happens next
If a meniscal tear is suspected or confirmed, management depends on severity.
Mild cases: pain management with NSAIDs, joint supplements, and controlled exercise restriction. The meniscus may stabilize with conservative management if the tear is small and the joint is otherwise stable.
Cases with ongoing pain or lameness: partial meniscectomy (surgical removal of the torn portion of the meniscus) is required. This is a second surgical procedure requiring general anesthesia and a repeat recovery period.
SustainableVet.org confirms: if a meniscal tear causes ongoing pain and instability, surgery is often needed; this may involve a partial meniscectomy.
Larger dogs and clicking
Larger dogs are more likely to produce audible joint sounds during recovery. Greater body mass means greater joint loading forces, which amplify soft tissue and implant movement sounds.
SustainableVet.org confirms: larger dogs are more likely to make joint sounds during recovery; their extra weight puts more pressure on the healing leg, which can make clicking more noticeable.
This does not mean clicking in large dogs is more likely to be pathological -- only that it is more audible when it occurs.
When to contact your vet about clicking
Contact your vet promptly (same day or within 24 hours) if:
- Clicking is accompanied by lameness or non-weight bearing
- A dog that was improving begins to worsen (trajectory reversal)
- The click is producing a visible pain response
- The click appears late in recovery (after weeks of silent healing)
Contact at your next scheduled appointment (can wait):
- Intermittent clicking early in recovery without lameness
- Click that is quieter week by week
- Dog is bearing full weight and improving in function
For the full TPLO complications guide, see common complications after TPLO surgery. For the toe-tapping guide, see dog toe tapping after TPLO surgery.
For the lameness guide, see lameness after TPLO surgery in dogs. For the leg shaking guide, see dog leg shaking after TPLO surgery.
Frequently asked questions
My dog's knee has been clicking for 3 weeks but she is not limping at all. Should I be worried?
Three weeks of clicking with no lameness and a normal, improving recovery trajectory is most likely benign joint adjustment. Monitor for lameness, pain on stifle palpation, or worsening of the click.
Mention it at your next scheduled vet appointment -- this is not an emergency call.
My dog's leg clicked once loudly while getting up, and then she held the leg up. What do I do?
Contact your vet the same day. A sudden loud click followed by acute lameness may indicate a meniscal injury event. This presentation warrants veterinary examination and likely radiographs.
Can clicking after TPLO get better on its own?
Yes -- benign mechanical clicking from joint adjustment and soft tissue accommodation typically resolves or reduces significantly over the first 4 to 8 weeks.
A meniscal click does not resolve without treatment of the meniscal tear.
Does clicking mean the plate is failing?
Not typically. Implant failure clicking is accompanied by pain and worsening lameness. Benign clicking in a comfortable, normally-recovering dog does not indicate implant failure.
Radiographs at the scheduled 6-week and 12-week appointments assess implant integrity.
My dog clicks on every step. Is that different from occasional clicking?
Consistent clicking on every step, particularly if it has a regular, reproducible pattern during weight bearing, is more likely to have a structural cause (meniscal click) than intermittent clicking.
Mention this to your vet and assess whether lameness is present.
Resources
- TPLO Info. Why Is My Dog's Leg Clicking After TPLO Surgery? tploinfo.com
- SustainableVet. Why Is My Dog's Leg Clicking After TPLO Surgery? sustainablevet.org
- Laguna Woods Vets (LHAH). TPLO Surgery Complications. lhah.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org
X min read
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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
Ankle Swelling After TPLO Surgery in Dogs
Learn about causes, symptoms, and treatment of ankle swelling after TPLO surgery in dogs to ensure proper recovery and care.
Many owners are surprised to find their dog's ankle swollen after TPLO surgery especially when the surgery was performed on the knee, which is well above the ankle.
This gravity-dependent swelling is one of the most common post-TPLO findings, and in most cases it is a completely normal part of recovery.
Knowing what causes it, when it is expected, and when it becomes a reason to call your vet puts you in a much better position during recovery.
Quick answer: Ankle swelling 3 to 5 days post-TPLO is normal — gravity pools post-surgical fluid at the ankle. Resolves in 1 to 2 weeks with rest and cold packing. Call your vet if swelling is hot, fast-growing, or discharging.
Key takeaways
- Ankle swelling at 3 to 5 days post-TPLO is normal: fluid from the knee surgical site tracks down the leg; TPLO Info confirms this is routine
- Gravity pulls fluid to the ankle: dogs do not elevate the leg during recovery, so post-surgical fluid migrates downward
- Normal ankle swelling is mild, soft, and non-painful: not hot, red, rapidly growing, or producing any discharge
- Cold packing and gentle massage help resolve ankle swelling: they reduce inflammation and encourage fluid movement
- Excessive activity worsens ankle swelling: running, jumping, or sustained weight-bearing beyond short leash walks increases fluid accumulation
- Infection is the main abnormal cause: infected swelling is warm, painful, and accompanied by fever or lethargy
Why does ankle swelling happen after TPLO?
TPLO surgery is performed at the proximal tibia just below the knee. However, the inflammatory response and fluid production that result from surgery are not confined to the exact surgical site.
Gravity-dependent fluid migration: post-surgical serum and inflammatory fluid produced at the knee level migrate downward along tissue planes. Because dogs do not elevate their legs during recovery unlike a human keeping a leg raised on a pillow this fluid pools in the lower leg and ankle region.
TPLO Info confirms ankle swelling at 3 to 5 days post-TPLO is completely normal and recommends massage and icing if this occurs.
Lymphatic disruption: the surgery disrupts local lymphatic vessels that normally drain fluid from the lower leg. Until these pathways regenerate or compensate, fluid accumulation in the lower leg is common.
Reduced movement: when a dog is resting with the leg dependent (hanging down), fluid accumulates. Brief controlled leash walks stimulate the lymphatic pump and muscle contractions that help move fluid back up the leg.
Normal ankle swelling: what to expect
Normal post-TPLO ankle swelling typically:
- Appears at day 3 to 5 post-surgery
- Is soft and pitting (you can press on it and it indents temporarily)
- Is not warm to the touch
- Does not produce any discharge
- Does not cause significant additional pain beyond the expected post-operative discomfort
- Gradually reduces over 1 to 2 weeks with rest and activity restriction
VCA Animal Hospitals notes that mild to moderate swelling is expected after TPLO surgery as the body responds to tissue trauma and the healing process begins.
Abnormal ankle swelling: warning signs
Contact your veterinarian if you observe:
- Swelling that is rapidly increasing especially in the first 1 to 2 weeks
- Warmth or heat in the swollen area beyond mild
- Redness or skin discoloration around the ankle or lower leg
- Discharge or pus from the surgical incision or surrounding skin
- Your dog refusing to bear any weight on the leg
- Fever, lethargy, or loss of appetite alongside the swelling
- Swelling that is growing rather than shrinking after the first week
These signs suggest infection, hematoma, or a complication beyond normal gravity-dependent fluid pooling.
How to manage ankle swelling at home
Cold packing: apply a cold pack (frozen peas wrapped in a thin towel) to the ankle for 10 to 15 minutes, 2 to 3 times daily. Cold reduces local inflammation and provides mild pain relief. Always wrap the cold pack never apply ice directly to skin.
Gentle massage: TPLO Info recommends gentle massage if ankle swelling develops. Using a light hand, massage from the ankle upward toward the knee to encourage fluid to move back toward the body. Do not massage the surgical incision site itself.
Activity restriction: the most important intervention. Every unnecessary step the dog takes increases fluid production and worsens swelling. Strict confinement with leash-only bathroom walks is essential for the first 6 to 8 weeks.
Short controlled leash walks: paradoxically, very short leash walks (5 to 10 minutes) are better than complete immobility. Gentle controlled movement stimulates the lymphatic pump and helps clear fluid more effectively than prolonged rest. Do not allow the dog to run, jump, or play.
Timeline: when should ankle swelling resolve?
Most normal ankle swelling resolves within 1 to 2 weeks of surgery when activity restriction is maintained.
Vetplayas notes that swelling is a common response to surgical intervention and typically improves as healing progresses.
Persistent ankle swelling beyond 2 to 3 weeks, or swelling that worsens rather than improves, warrants a veterinary recheck.
This may indicate a seroma has formed in the lower leg, or that the dog is more active than recommended.
For the full fluid buildup and seroma guide, see fluid buildup after TPLO surgery in dogs.
For the full swelling timeline and duration guide, see how long does swelling last after TPLO surgery. For the complete complications overview, see 15 common complications after TPLO surgery in dogs.
For the incision infection guide, see TPLO incision infection symptoms and prevention.
Frequently asked questions
Is ankle swelling after TPLO always from the surgery?
In the first 1 to 3 weeks post-surgery, yes ankle swelling almost always relates directly to the procedure.
Rarely, a dog might develop an unrelated issue (insect sting, foreign body, contact dermatitis) but the timing overwhelmingly points to post-surgical fluid migration in most cases.
Should I wrap my dog's ankle if it's swollen after TPLO?
Only if your vet specifically recommends it. Improper bandaging can cut off circulation or cause pressure sores.
If you are concerned about the ankle swelling, contact your vet before applying any bandage or wrap at home.
My dog's ankle is swollen but the knee looks fine. Is that normal?
Yes. The surgical site at the knee may look relatively normal while the ankle is more visibly swollen because gravity pulls fluid downward.
This pattern is completely consistent with normal post-TPLO fluid migration and is not a sign that something is wrong at the ankle itself.
Can I use a compression sock on my dog's ankle?
Not without veterinary guidance. Human compression garments are not designed for canine anatomy and can cause pressure injury, especially around the hock joint.
If compression is indicated, your vet will apply an appropriate veterinary bandage.
When should I take my dog back to the vet for ankle swelling?
If the swelling appears within the first 1 to 2 weeks and is mild, soft, and not causing distress monitor at home with cold packing and massage.
If it is growing, warm, accompanied by redness or discharge, or if your dog is in significant pain, contact your vet promptly rather than waiting for a scheduled recheck.
Resources
- TPLO Info. Recovery FAQs. tploinfo.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com
- Vetplayas. Understanding Swelling After TPLO Surgery. vetplayas.com
- Midwest Veterinary Specialists. Post-Operative Care Following TPLO. midwestveterinaryspecialists.com

TPLO
5 min read
Long-Term Outcomes of TPLO Surgery
Explore the long-term outcomes of TPLO surgery, its effectiveness, potential risks, and benefits for maintaining canine mobility and quality of life
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

TPLO
5 min read
Taking Great TPLO Radiographs
Learn how to take great TPLO radiographs with proper positioning, imaging tips, & techniques. Watch videos to improve accuracy for better surgical planning
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

TPLO
5 min read
How to Keep a Dog Calm After TPLO Surgery
Learn how to keep your dog calm after TPLO surgery using rest, crate training, and soothing techniques for safe, stress-free recovery.
Keeping a dog calm during TPLO recovery is one of the hardest parts of the process -- and one of the most important.
A dog that feels physically capable of running at week 3 is not biologically ready to run at week 3. The osteotomy has not consolidated. The plate can fail.
Activity restriction is not optional.
Quick answer: Most effective strategies for keeping a dog calm after TPLO surgery: crate confinement during unsupervised periods, food puzzles and scent games, consistent pain management, a quiet low-stimulus environment, and trazodone or gabapentin for highly anxious dogs. Keep a leash on the dog indoors.
Key takeaways
- Crate confinement is the foundation of activity control: large enough to stand and turn but not pace; prevents the spontaneous running, jumping, and spinning that cause plate failure
- Mental stimulation substitutes for physical activity: food puzzles, lick mats, frozen Kongs, and scent games provide neural reward without physical impact
- Pain management compliance directly affects calmness: uncontrolled pain causes restlessness; giving NSAIDs and gabapentin on schedule keeps the dog comfortable enough to rest
- The environment must be actively managed: loud TV, visitors, and other pets cause arousal and movement; a quiet, predictable low-stimulus space reduces arousal
- Trazodone and gabapentin can be prescribed for highly anxious dogs: VetSurgInfo confirms trazodone is inexpensive, safe, and effective for anxiety and sedation during TPLO recovery
- Always use a leash indoors during early recovery: a dog that slips or startles can displace the plate; a house leash gives the owner control at all times
The crate: foundation of confinement
A crate is the safest confinement tool for TPLO recovery.
It limits the movements that risk plate failure -- spontaneous jumping, running to the door, sudden pivoting -- and gives the dog a defined, safe space.
Crate selection:
- Large enough for the dog to stand, turn, and lie down comfortably
- Not so large the dog can pace or run inside
- Soft bedding on non-slip material
- Location in the household main area, not isolated -- isolation increases anxiety
SustainableVet.org confirms: use a crate, pen, or small room with non-slip flooring. Crates prevent jumping, running, and twisting. Choose a crate large enough to stand and turn.
Exercise pen alternative: for dogs that do not tolerate crates, an exercise pen (X-pen) provides a larger confined space while still restricting free movement. Place the X-pen in the main living area so the dog is not isolated.
Small room alternative: a bathroom, laundry room, or small bedroom with a baby gate can work. Remove furniture the dog could jump on.
Mental stimulation: the most underused tool
A dog confined physically but not cognitively engaged becomes frustrated, which leads to escape attempts and activity that risks the repair.
Mental stimulation provides the same dopamine reward as physical activity with zero mechanical risk.
Effective mental stimulation options:
Food puzzles and slow feeders: scatter meals in a puzzle feeder or across a lick mat instead of in a bowl. A meal that takes 15 minutes to eat provides significant cognitive engagement.
Frozen Kongs: stuff with wet food, peanut butter (xylitol-free), or kibble soaked in broth; freeze for several hours. A frozen Kong can occupy a dog for 20 to 30 minutes.
Sniff games: hide small treats in a folded towel, a muffin tin covered with tennis balls, or a scatter across the crate bedding. Sniffing is cognitively tiring -- it is physiologically equivalent to sustained physical exercise in terms of neural engagement.
Chew toys: long-duration chews (bully sticks, raw bones appropriate for the dog's size, frozen chicken necks) keep the dog occupied without movement.
Animal Outpatient Surgery confirms: soft music, white noise, or pheromone diffusers create a serene atmosphere. Mental engagement through food puzzles and scent games reduces frustration from limited mobility.
Environmental management
The dog's immediate environment directly controls arousal level.
Reduce auditory stimuli: loud TV, doorbell sounds, and street noise cause the dog to alert and attempt to move. White noise machines or calm background music reduce stimulus peaks.
Manage household traffic: visitors who excite the dog, children who rough-house nearby, and other pets that want to interact all cause arousal. Limit access to the dog during early recovery.
Manage other pets: other dogs and cats approaching the recovering dog cause arousal and can trigger sudden jumping or running. Keep them separated during the early weeks, particularly unsupervised.
Non-slip flooring: rugs and yoga mats in the dog's movement area prevent slipping, which generates uncontrolled leg movements that can stress the plate.
Laveen Vet Center confirms: set up a quiet, confined area free from loud noises, active children, and other pets. White noise or soft music helps create a serene atmosphere.
Pain management and its role in calmness
An undertreated dog is a restless dog. Pain creates the exact behaviors -- panting, pacing, inability to settle, licking the leg -- that also indicate anxiety.
Distinguishing pain from anxiety is important because the response is different.
Pain management checklist:
- Give NSAIDs and gabapentin on the exact schedule prescribed, not as needed
- Never skip doses because the dog appears comfortable -- the medication is maintaining that comfort
- Give medications approximately 30 minutes before walks (TPLO home recovery protocols recommend this timing)
- Contact your vet if the dog cannot settle despite correct medication administration
VetSurgInfo confirms: gabapentin provides both analgesia and sedation; the sedating effect facilitates recovery and rest, particularly in the first 7 days.
Prescribed calming medications
For dogs with high anxiety, separation anxiety, or an inability to settle despite environmental and mental stimulation management, veterinary-prescribed medications are appropriate and safe.
Trazodone: a serotonin modulator used off-label in dogs for anxiety and sedation. VetSurgInfo confirms: dogs do very well on trazodone for anxiety and sedation during TPLO recovery; it is inexpensive and can facilitate recovery, rest, and calm during vet visits.
Gabapentin: the analgesic side effect of sleepiness helps with calmness in addition to pain control.
Alprazolam or other benzodiazepines: may be appropriate for situational anxiety (specific triggers like thunder).
SustainableVet.org confirms: vets can prescribe mild sedatives or calming medications for dogs who remain overly anxious; these drugs are safe when dosed correctly and can prevent harmful overactivity.
Never give human anxiety medications to dogs. Never use human supplements without vet approval -- some contain xylitol or other ingredients toxic to dogs.
Owner behavior and management
Owners unintentionally promote activity.
Do not excitedly greet the dog: excited greetings cause the dog to jump and spin. Calm, quiet greetings reduce arousal.
Leash the dog indoors: a house leash (a short, light leash attached to the collar) gives the owner control when the dog is out of the crate. If the dog startles or tries to move suddenly, the leash prevents uncontrolled movement.
Maintain a predictable routine: dogs are routine-oriented. Predictable meal times, bathroom walk times, and crate times reduce anticipatory anxiety. Variation creates excitement; routine creates calm.
Keep visits short: sitting with the dog is good. Prolonged exciting interaction is not. Brief, calm contact several times daily is better than one long exciting session.
For the recovery timeline, see what to expect after TPLO surgery in dogs. For infection prevention, see post-operative care mistakes that increase TPLO infection risk.
For swelling management, see fluid buildup after TPLO surgery in dogs. For exercise, see TPLO recovery exercises for dogs.
Frequently asked questions
My dog screams and cries in the crate for hours. What do I do?
Contact your vet. Sustained, intense crate distress may indicate: inadequate pain control (the dog is in pain, not just anxious), genuine severe separation anxiety, or insufficient mental stimulation.
Ask about trazodone or gabapentin for anxiety management. Do not give up on crate confinement -- the alternative is uncontrolled movement that risks the repair.
Is it okay to let my dog out of the crate to sit with me on the sofa?
Only if the dog is on a leash and cannot jump. Allow the dog to lie next to you on the floor or on a low dog bed beside you.
Do not allow the dog onto the sofa -- falling or jumping off generates the same plate-failure risk as running.
My dog seems much better at 3 weeks. Can I relax the restrictions?
No. Clinical improvement does not mean bone healing is complete. The osteotomy is not confirmed healed until radiographs at 8 to 12 weeks.
Plate failure typically happens when owners relax restrictions based on the dog appearing well. Maintain full restrictions until vet clearance.
What is the best medication for a high-energy dog that can't settle?
Trazodone is the most commonly prescribed agent for activity restriction in TPLO dogs. It is effective, safe, inexpensive, and can be used for the full restriction period.
Discuss with your vet at or before surgery -- it is easier to start early than to address a crisis at week 2.
Can I take my dog to visit friends or family during recovery?
Very limited visits in controlled, quiet environments where the dog is leashed and confined.
No visits to households with other active dogs, children who will excite the dog, or any environment where the dog cannot be kept calm. Unfamiliar environments increase anxiety and exploration behavior.
Resources
- SustainableVet. How to Keep a Dog Calm After TPLO Surgery. sustainablevet.org
- VetSurgInfo. TPLO Recovery Tips. vetsurginfo.com
- Animal Outpatient Surgery. How to Keep a Dog Calm After TPLO Surgery. animaloutpatientsurgery.com
- Laveen Vet Center. How to Keep a Dog Calm After TPLO Surgery. laveenvetcenter.com

TPLO
5 min read
Redness After TPLO Surgery in Dogs: Causes & Care
Learn why redness occurs after TPLO surgery in dogs, how to recognize normal healing versus complications, and when to seek veterinary care.
Some redness around a TPLO incision is a completely normal part of healing.
The skin and underlying tissues respond to any surgical trauma with an inflammatory response redness is one of the visible signs of that response.
The question is always: is this normal healing redness, or is this infection?
Quick answer: Mild redness at the TPLO incision is normal for 2 to 3 days, fading over 1 to 2 weeks. Call your vet if redness spreads, is warm, produces discharge, worsens after day 3, or your dog develops fever.
Key takeaways
- Mild redness at the incision is normal for 2 to 3 days post-surgery: it should be fading by day 3 to 5
- Normal redness is localized to the incision line: redness spreading outward from the wound edge is not normal
- Infection redness is spreading, warm, and accompanied by discharge: these features together require veterinary evaluation
- Suture reaction redness is localized and itchy: the pattern is different from infection and typically resolves after suture removal
- Licking is the most preventable wound complication: saliva introduces bacteria; the E-collar must stay on until suture removal
- Redness after week 2 warrants veterinary evaluation: new redness after day 14 suggests a complication
Normal redness after TPLO surgery
The inflammatory phase of wound healing is the body's first response to surgical trauma. Blood flow increases to the wound, bringing immune cells and clotting factors.
This increased blood flow makes the skin appear pink or faintly red. This is expected and necessary for healing.
SustainableVet.org confirms: normal redness after TPLO surgery is usually mild and limited to the incision area. It should improve daily as the wound heals.
Characteristics of normal healing redness:
- Confined to the immediate edges of the incision not spreading outward
- Mild pale pink to light red, not deep red or purple
- Decreasing over time improving from day 3 onward
- Not warm to the touch (normal healing generates mild local warmth, but not the significant heat of infection)
- No discharge from the wound other than possibly a small amount of serum in the first 24 to 48 hours
- The dog is not bothered by gentle examination of the area
The redness typically peaks at 48 to 72 hours post-surgery and should be noticeably fading by the end of the first week.
Abnormal redness: signs of infection
Infection redness is different from normal healing redness in several characteristic ways:
Spreading: the redness extends outward from the incision margin into the surrounding skin. This cellulitis pattern spreading red discoloration in surrounding tissue is a sign that bacteria are spreading through the tissue planes.
Warmth: the infected area feels significantly warmer than surrounding skin or the opposite leg. Infection drives significant local heat through the inflammatory cytokine response.
Discharge: infected wounds produce discharge that may be clear-to-yellow early, progressing to yellow-green, cloudy, or frankly purulent. Foul odor is a hallmark of anaerobic bacterial involvement.
Worsening, not improving: normal redness fades. Infected redness intensifies. If redness is worse at day 5 than at day 2, infection is strongly suspected.
Systemic signs: fever (rectal temperature above 102.5 F), lethargy, loss of appetite, and reluctance to bear weight alongside redness suggest the infection is causing systemic effects.
SustainableVet.org confirms: infection risk includes bacteria entering the incision, causing redness that worsens along with discharge or odor.
The TPLO incision infection guide confirms: infection risk occurs in approximately 3 to 10% of TPLO cases. Signs of infection include redness, swelling, warmth, discharge, and delayed healing.
Other causes of post-TPLO redness
Suture or staple reaction
Some dogs develop a local inflammatory reaction to the suture material more commonly with older suture types or in dogs with sensitive skin.
This produces redness specifically along the suture line, often with mild swelling and sometimes itching (prompting the dog to lick or chew at the site).
It is localized, does not produce the spreading pattern of infection, and typically resolves after suture removal.
Contact dermatitis
Redness from a reaction to bandage material, antiseptic solution applied to the wound, or topical medications can mimic early infection. The pattern follows the contact area rather than the wound edge.
Seroma formation
A seroma that presses against the overlying skin may cause mild skin discoloration and the appearance of redness over the fluid-filled swelling. The area is soft, fluctuant, and typically not warm.
For the full seroma guide, see seroma in dogs after TPLO surgery.
What to do if you notice redness
First 3 days: normal range
Monitor daily. Take a photograph to track progression. Ensure the E-collar is on at all times. Check that no discharge or spreading is occurring.
Days 3 to 10: should be improving
If redness is not clearly fading by day 5 to 7, contact your veterinarian.
Photograph the wound to share with the vet by phone or telehealth before deciding whether an in-person visit is needed.
Do not apply any topical products to the wound without veterinary guidance antiseptics can delay healing and worsen skin reaction.
After day 10: any new or persistent redness needs evaluation
By day 10 to 14, most surgical incisions are well into the proliferative healing phase.
Persistent redness at this stage, or new-onset redness that was not present before, warrants a veterinary appointment rather than home monitoring.
Incision care during recovery
- Keep the incision dry: no bathing, no swimming, no wet grass
- E-collar on at all times until sutures are removed (typically day 10 to 14)
- Check the wound twice daily: look at it, do not touch it unless instructed
- No ointments or antiseptics unless specifically prescribed
- Contact your vet before applying anything to the wound
For the incision infection guide with full symptom detail, see TPLO incision infection symptoms and prevention. For the full complications reference, see 15 common complications after TPLO surgery in dogs.
For the seroma guide (fluid that can cause discoloration), see seroma in dogs after TPLO surgery. For the full TPLO recovery guide, see what to expect after TPLO surgery in dogs.
Frequently asked questions
How do I know if my dog's incision redness is normal?
Normal redness is mild, pink, confined directly to the wound edges, and fading by day 3 to 5.
Abnormal redness is spreading outward from the incision, deepening in color, warm to the touch, or accompanied by discharge or odor. If you are unsure, photograph the wound and contact your veterinarian.
My dog's incision looks red and my dog keeps licking it. What should I do?
Replace or refit the E-collar immediately if the dog has been reaching the wound. Even a few minutes of licking introduces bacteria.
Examine the wound for any discharge, spreading redness, or wound breakdown. If you see any of these, contact your vet the same day.
If the wound looks intact, continue monitoring closely with the E-collar secured.
Can redness appear weeks after surgery?
Yes. Late-onset redness appearing 2 to 6 weeks post-surgery often signals a developing infection rather than normal healing.
Common causes include low-grade suture infection, developing seroma, or a bacterial infection that has been slowly progressing. Any new redness appearing after the initial 2-week healing phase warrants veterinary evaluation.
Is red skin around the TPLO staples normal?
A small amount of mild pinkness immediately at the staple insertion points is normal.
Spreading redness between staple sites, significant swelling along the staple line, or discharge from staple holes is not normal and requires veterinary evaluation before the scheduled staple removal visit.
What happens if redness from infection is left untreated?
Superficial infections can progress to deeper tissue infections, then to implant-associated infections and osteomyelitis.
Laguna Hills Animal Hospital confirms that even superficial soft tissue infections have been shown to progress to implant infections and bone infections when not treated promptly and appropriately.
Resources
- SustainableVet. TPLO Incision Infection Symptoms and Prevention. sustainablevet.org
- Dial A Vet. Redness and Swelling Around TPLO Incision. dialavet.com
- Laguna Hills Animal Hospital. TPLO Surgery Complications. lhah.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com

TPLO
5 min read
Arthrex TPLO Plate Overview and Use
Learn about the Arthrex TPLO plate, its design, surgical use, and benefits for canine cruciate ligament repair.
The Arthrex TPLO plate is a specialized orthopedic implant designed to stabilize the tibia after a tibial plateau leveling osteotomy (TPLO) surgery in dogs. TPLO surgery is a common procedure to treat cranial cruciate ligament (CCL) rupture, which causes lameness and pain in dogs. Understanding the Arthrex TPLO plate helps pet owners and veterinarians appreciate how this device supports bone healing and restores limb function.
This article explains what the Arthrex TPLO plate is, how it is used during surgery, its design features, and the benefits it offers. You will learn about the surgical technique, implant materials, and postoperative care to ensure the best outcomes for dogs undergoing TPLO surgery.
What is the Arthrex TPLO plate?
The Arthrex TPLO plate is a metal implant used to fix the tibia after cutting and rotating the bone during TPLO surgery. It holds the bone segments securely to allow proper healing and restore normal joint mechanics. The plate is contoured to fit the shape of the canine tibia and is available in various sizes to match different dog breeds and sizes.
The plate works together with locking screws that provide stable fixation without compressing the bone excessively. This design helps reduce complications and promotes faster recovery.
- Purpose of the plate: It stabilizes the tibia after osteotomy, maintaining the new bone angle to prevent joint instability and lameness.
- Material composition: Made from medical-grade stainless steel or titanium, ensuring strength, biocompatibility, and corrosion resistance.
- Plate design: Anatomically contoured to match the tibial shape, minimizing soft tissue irritation and improving fit.
- Locking screw system: Uses locking screws that lock into the plate, providing angular stability and reducing screw loosening risks.
These features make the Arthrex TPLO plate a reliable choice for TPLO surgeries in veterinary orthopedics.
How is the Arthrex TPLO plate used in surgery?
During TPLO surgery, the surgeon makes a curved cut in the tibia and rotates the bone segment to change the slope of the tibial plateau. The Arthrex TPLO plate is then applied to hold the bone in its new position. Proper placement and fixation are critical for successful healing and restoring limb function.
The surgical steps include precise measurement, plate selection, and screw placement to ensure stability and avoid complications.
- Osteotomy procedure: The tibia is cut using a saw guided by a jig to create a controlled curved osteotomy.
- Plate positioning: The Arthrex TPLO plate is aligned over the osteotomy site to match the bone contour and rotated segment.
- Screw insertion: Locking screws are placed through the plate holes into the bone, securing the plate firmly.
- Verification of stability: The surgeon checks the fixation and limb alignment before closing the surgical site.
Following these steps ensures the plate supports the bone during healing and helps the dog regain normal limb use.
What are the advantages of using the Arthrex TPLO plate?
The Arthrex TPLO plate offers several benefits compared to traditional fixation methods. Its design and materials improve surgical outcomes and reduce postoperative complications. These advantages contribute to faster recovery and better function for dogs after TPLO surgery.
Understanding these benefits helps veterinarians choose the best implant for their patients.
- Enhanced stability: Locking screw technology provides rigid fixation, reducing micromotion and promoting bone healing.
- Reduced soft tissue damage: Anatomical contouring minimizes irritation and inflammation around the implant site.
- Corrosion resistance: High-quality materials prevent implant degradation and inflammatory reactions over time.
- Versatility in sizes: Multiple plate sizes accommodate different dog breeds, ensuring proper fit and function.
These features make the Arthrex TPLO plate a preferred choice for many veterinary surgeons performing TPLO surgeries.
What materials are used in the Arthrex TPLO plate?
The Arthrex TPLO plate is manufactured from biocompatible metals that provide strength and durability while minimizing adverse tissue reactions. The choice of materials affects the plate’s performance and long-term safety.
Knowing the materials helps veterinarians and pet owners understand implant behavior inside the body.
- Stainless steel: Commonly used for its strength, corrosion resistance, and affordability in orthopedic implants.
- Titanium alloy: Offers excellent biocompatibility, lighter weight, and reduced risk of allergic reactions.
- Surface finish: Smooth, polished surfaces reduce tissue irritation and bacterial adhesion risks.
- Radiopacity: Materials allow clear X-ray visualization to monitor implant position during follow-up.
These material properties ensure the Arthrex TPLO plate performs well during the healing process and remains safe long term.
How does the Arthrex TPLO plate support postoperative recovery?
Postoperative care is essential for successful healing after TPLO surgery using the Arthrex TPLO plate. The implant provides stable fixation, but proper management of the dog’s activity and monitoring are critical to prevent complications.
Understanding the role of the plate in recovery helps owners follow veterinary instructions effectively.
- Early weight bearing: Stable fixation allows controlled limb use soon after surgery, promoting muscle strength and joint mobility.
- Reduced risk of implant failure: Locking screws and plate design minimize loosening or breakage during recovery.
- Radiographic monitoring: Regular X-rays check bone healing and implant position to detect issues early.
- Physical therapy support: Rehabilitation exercises complement implant stability to restore normal gait and function.
Following these guidelines helps dogs recover faster and return to normal activity safely.
What complications can occur with the Arthrex TPLO plate?
While the Arthrex TPLO plate is designed to reduce complications, some risks remain. Awareness of potential problems helps veterinarians and owners recognize signs early and take action.
Most complications relate to surgical technique, implant placement, or postoperative care.
- Infection risk: Surgical site infections can occur, requiring antibiotics or implant removal in severe cases.
- Implant loosening: Poor screw fixation or excessive activity may cause the plate to loosen, affecting stability.
- Delayed bone healing: Factors like poor blood supply or infection can slow osteotomy healing despite stable fixation.
- Soft tissue irritation: Improper plate positioning may cause discomfort or swelling around the implant.
Close follow-up and adherence to postoperative instructions minimize these risks and improve outcomes.
Conclusion
The Arthrex TPLO plate is a vital implant in veterinary orthopedics for treating cranial cruciate ligament injuries in dogs. Its specialized design and locking screw system provide stable fixation, promote bone healing, and support early recovery.
Understanding the plate’s features, surgical use, and postoperative care helps pet owners and veterinarians ensure the best results after TPLO surgery. Proper implant selection and management reduce complications and help dogs regain normal limb function safely.
What sizes does the Arthrex TPLO plate come in?
The Arthrex TPLO plate is available in multiple sizes ranging from small to large to fit different dog breeds and tibial dimensions accurately.
Can the Arthrex TPLO plate be removed after healing?
Implant removal is not routinely required but may be performed if the dog experiences irritation, infection, or implant-related complications after bone healing.
How long does it take for the bone to heal with the Arthrex TPLO plate?
Bone healing typically takes 8 to 12 weeks, depending on the dog's age, health, and postoperative care quality.
Is the Arthrex TPLO plate MRI compatible?
Plates made from titanium alloys are generally MRI compatible, while stainless steel plates may cause artifacts or interference during imaging.
What postoperative care is recommended after TPLO surgery with this plate?
Recommended care includes restricted activity, pain management, physical therapy, and regular veterinary check-ups with radiographic monitoring to ensure proper healing.

TPLO
5 min read
13 Long-Term Effects of TPLO Surgery on Dogs
Discover the 13 long-term effects of TPLO surgery in dogs, including benefits, risks, and care tips for optimal recovery and joint health
TPLO produces predominantly positive long-term effects in most dogs, but it also produces a predictable set of changes that owners should understand and manage proactively.
Most of these effects are manageable with appropriate care. Knowing what to expect prevents owners from being surprised by normal post-TPLO findings and helps them recognize when a change requires veterinary attention.
Quick answer: The 13 key long-term effects of TPLO surgery: improved joint stability, progressive osteoarthritis, muscle atrophy, morning stiffness, cold weather sensitivity, scar tissue formation, patellar tendon thickening, permanent implant in situ, contralateral CCL rupture risk, late implant complications, behavioral changes from chronic pain, weight management challenges, and long-term monitoring requirements.
Key takeaways
- Improved joint stability is the intended and most common long-term effect: for 90 to 95% of dogs, TPLO eliminates CCL-related instability and restores near-normal function
- Progressive osteoarthritis develops in all CCL-affected stifles regardless of surgical technique: TPLO slows OA progression but does not stop it; long-term OA management is a universal requirement
- Muscle atrophy is common in the operated leg throughout recovery; the thigh may remain visibly smaller than the contralateral side for months if rehabilitation is inadequate
- Contralateral CCL rupture risk is high: SustainableVet.org confirms up to a 50% chance of tearing the opposite CCL within a few years; the same degenerative process affects both stifles
- The TPLO plate and screws are permanent in the vast majority of cases: removal is only performed when complications arise; routine plate removal is not standard practice
- Weight management is the most impactful long-term owner-controlled variable: excess weight accelerates OA progression; maintaining ideal body condition is the primary long-term prevention strategy
The 13 long-term effects
1. Improved joint stability and mobility
The primary intended effect. The osteotomy and plate fixation permanently change the tibial plateau geometry, eliminating the cranial tibial thrust that caused instability.
For 90 to 95% of dogs, this produces lasting functional improvement: return to normal gait, ability to run and play, and freedom from the pain of unstable joint loading.
SustainableVet.org confirms: over 90% of dogs regain full limb function within a year; with proper care, many dogs remain active for 8 to 10 years after surgery.
2. Progressive osteoarthritis
The most universal long-term challenge. CCL disease initiates an arthritis process in the stifle that continues regardless of surgical outcome.
TPLO reduces the rate of progression and the severity of clinical signs compared to other treatment options, but OA continues.
Clinical signs of progressing OA emerge gradually over months and years: stiffness after rest, reluctance to run, difficulty climbing, and behavioral changes associated with chronic low-grade pain.
Management: weight management, omega-3 fatty acids, glucosamine and chondroitin, NSAIDs for flares, hydrotherapy, physiotherapy.
3. Muscle atrophy and asymmetry
The operated leg loses muscle mass rapidly during the restriction period and slowly rebuilds during rehabilitation. Full recovery of muscle symmetry takes 4 to 6 months in most dogs.
In some dogs -- particularly those with inadequate rehabilitation or ongoing joint pain -- visible thigh circumference asymmetry persists long-term.
Vetplayas confirms: due to reduced use during recovery and altered movement patterns post-surgery, muscles around the operated leg may weaken and shrink.
4. Morning stiffness
Morning stiffness -- the dog rises from sleep stiffly and walks awkwardly for the first few minutes before loosening up -- is one of the most common long-term effects of post-TPLO OA.
It typically develops months to years after surgery and gradually worsens as the dog ages.
This stiffness should not be confused with acute lameness. It consistently improves within 5 to 10 minutes of movement.
If it does not improve, or if the dog refuses to bear weight on waking, contact your vet.
5. Cold weather sensitivity
Dogs with OA in the operated stifle commonly show increased stiffness and lameness during cold weather or when barometric pressure changes.
This reflects the sensitivity of arthritic joints to temperature and pressure changes -- the same phenomenon seen in human arthritis.
Management: NSAIDs or joint supplements maintained year-round; warming the dog's sleeping area; a brief gentle walk before expecting full function in cold conditions.
6. Scar tissue formation
The surgical dissection and bone healing produce scar tissue in and around the stifle. This fibrous tissue generally has a beneficial stabilizing effect, contributing to long-term joint stability.
In some dogs, however, periarticular fibrosis restricts range of motion and causes stiffness that persists long after bone healing is complete.
Regular low-impact exercise and physiotherapy help maintain range of motion and prevent excessive fibrous tissue restriction.
7. Patellar tendon thickening
Fibrous thickening of the patellar tendon is a recognized long-term change after TPLO. It is typically subclinical -- detected on palpation at follow-up examinations but not producing clinical lameness.
In a small number of dogs, it contributes to reduced range of motion.
8. Permanent implant in situ
The TPLO plate and screws are designed to remain in place for life. In the vast majority of dogs, the implant is never removed and causes no long-term problems.
SustainableVet.org confirms: these implants are meant to stay in place permanently. In rare cases, some dogs may develop infections around the implant or experience loosening of the hardware over time.
The plate is palpable under the skin on the medial tibial surface. This is normal and not a complication.
9. Contralateral CCL rupture
The degenerative process that caused one CCL to rupture typically affects both stifles.
SustainableVet.org confirms dogs have up to a 50% chance of tearing the CCL in the opposite knee within a few years.
RCVS confirms approximately 50% of dogs develop CCL disease in the other hind limb.
This is not a complication of TPLO -- it is the natural history of bilateral CCL disease.
Monitoring the contralateral stifle for early signs of instability, effusion, or lameness is appropriate in all TPLO dogs.
10. Late implant-associated complications
Implant-related complications -- loosening, late infection from hematogenous seeding, or implant irritation -- can occur years after the original surgery. These are uncommon but recognized long-term effects.
Signs: new lameness focused at the plate site, warmth or swelling over the plate, a new draining tract in previously healed skin. Any of these warrants prompt veterinary assessment.
11. Behavioral changes
Chronic joint pain from progressive OA, late meniscal injury, or implant irritation can produce subtle behavioral changes: reduced engagement in play, reluctance to walk, increased irritability, or reduced stair use.
These changes are often attributed to aging but may reflect treatable pain.
Annual or semi-annual pain assessments, including use of validated canine pain scales (Canine Brief Pain Inventory, Helsinki Chronic Pain Index), help detect behavioral pain signs before they become severe.
12. Weight management challenges
Activity restriction during recovery predisposes many dogs to weight gain. Excess weight gained during the 8 to 12 week restriction period is then carried on the healing joint for the following months.
Long-term obesity accelerates OA progression and is the most modifiable risk factor for long-term joint health.
Medcovet confirms: because activity is restricted, veterinary teams may recommend reducing food intake by about 30% during recovery to prevent weight gain and extra strain on the knee joint.
13. Long-term monitoring and supplement requirements
TPLO dogs benefit from long-term monitoring (every 6 to 12 months after full recovery) to assess:
- Arthritis progression radiographically and clinically
- Body condition score and weight
- Contralateral stifle stability
- Implant integrity (radiographs every 1 to 2 years in some protocols)
Joint supplements (omega-3 fatty acids at anti-inflammatory doses; glucosamine and chondroitin) and ongoing weight management are the primary preventive interventions for the long-term joint changes that TPLO does not prevent.
For the long-term outcomes guide, see long-term outcomes of TPLO surgery. For arthritis management, see arthritis after TPLO surgery in dogs.
For the signs that require attention, see signs of TPLO failure in dogs. For the failure rate overview, see TPLO failure rate in dogs.
Frequently asked questions
Will my dog develop arthritis even if the TPLO was successful?
Yes. All CCL-affected stifles develop progressive osteoarthritis regardless of surgical technique or outcome.
TPLO reduces the rate of progression and the severity of clinical signs compared to non-surgical management and lateral suture repair.
The goal of TPLO is not to prevent OA but to minimize it while restoring function.
How long will the TPLO plate last?
The plate is designed to be permanent. Published long-term follow-up data at 6.8 years shows 90.4% of dogs with good to excellent results -- with the plate in place.
Plate complications requiring removal occur in 3.5 to 7.5% of cases.
My dog had TPLO 2 years ago and is now limping. Is this related to the surgery?
Possibly. Two-year post-TPLO lameness most commonly results from progressive OA, late meniscal tear, late implant-associated infection (hematogenous seeding), or contralateral CCL disease.
A veterinary examination and radiographs of both stifles will identify the cause and guide treatment.
Does the opposite leg always need TPLO as well?
Not necessarily and not always at the same time. RCVS confirms approximately 50% of dogs develop CCL disease in the opposite hind limb.
When and whether the second stifle requires surgery depends on whether the second CCL has ruptured or become significantly unstable. Annual monitoring of the contralateral stifle is appropriate.
Can TPLO dogs still live active lives long-term?
Yes. Most do. SustainableVet.org confirms that with proper care, many dogs remain active for 8 to 10 years after surgery.
The keys are weight management, regular low-impact exercise, joint supplements, and addressing pain or complications promptly.
Resources
- SustainableVet. 13 Long-Term Effects of TPLO Surgery on Dogs. sustainablevet.org
- RCVS Canine Cruciate Registry. Tibial Plateau Levelling Osteotomy. rcvsknowledge.org
- TPLO Info. TPLO Literature and Studies. tploinfo.com
- SustainableVet. Long-Term Outcomes of TPLO Surgery. sustainablevet.org

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

TPLO
5 min read
How Long Does TPLO Surgery Take?
Learn how long TPLO surgery takes, what to expect during the procedure, and recovery timelines for your dog's knee surgery.
"Failure rate" is used loosely when owners discuss TPLO, which can cause significant confusion. A complication is not the same as a failure.
Understanding what the published data actually shows and distinguishing minor complications from true surgical failures gives owners a much clearer picture of what to expect.
Quick answer: The overall TPLO complication rate is 10 to 34% across studies; most are minor. Major complications requiring reoperation occur in 2 to 7%. Infection is the most common major complication. Long-term good outcomes are reported in 90 to 93% of dogs.
Key takeaways
- Overall complication rate is 10 to 34% across published studies; most complications are minor and resolve without additional surgery
- Major complication rate requiring reoperation is 2 to 7%: a 1,000-dog study found 14.8% overall with 6.6% major complications
- SSI is the most common major complication: 2.9% to 25.9% across studies; giant breeds over 50 kg are at highest risk
- Small dogs under 15 kg have significantly lower complication rates: 4.44% in one 90-dog study, with no revisions
- Good to excellent long-term outcomes in 90 to 93% of dogs: the complication rate does not equal the failure rate
- Surgeon experience is the most modifiable risk factor: complication rates are consistently lower at high-volume specialty centers with board-certified surgeons
Defining "failure" vs. "complication"
This distinction is critical for interpreting the literature and for setting owner expectations accurately.
Complication: any deviation from the expected post-operative course. This includes minor findings like superficial wound dehiscence, mild swelling, or radiographic evidence of delayed osteotomy healing with no clinical signs. Many publications include these minor events in their complication rates.
Major complication: an event requiring additional surgical intervention or causing extended lameness. Major complications represent the subset of complications that meaningfully affect recovery and outcome.
Failure: the most restrictive definition surgery that did not achieve its goal of stifle stabilization, resulting in persistent instability and requiring revision with a different technique. True failure in this sense is uncommon after TPLO.
What published complication data shows
Overall complication rates
Vetamac confirms: complication rates following TPLO surgery range from 14% to 34%, with less than 10% of cases requiring a second surgery.
PMC (intraoperative bacterial culture study) confirms: the complication rate of TPLO varies between 10% and 34%, with 2 to 4% requiring surgical revision.
Today's Veterinary Practice reports a 14.8% complication rate in 1,000 TPLO patients (6.6% major — requiring repeat surgery or extended lameness), including 2.8% late meniscal injury and 6.6% infections.
Infection rates
Infection is the most common major complication and the one with the greatest variation by dog size and surgical setting.
PMC confirms: SSI rate after TPLO is reported to be 2.9% to 25.9% across studies, which is higher than other clean orthopedic surgeries (2.0 to 6.7%).
Surgical site infection rates of 21.3% to 25.9% have been reported specifically for giant-breed dogs weighing over 50 kg.
The implant removal rate due to infection is 3 to 7.4% per published literature (PMC PRP study; ResearchGate implant removal study).
Complication rates by dog size
Dog size is a consistent predictor of complication risk.
PLOS One retrospective (90 dogs under 15 kg): overall complication rate 4.44%, with no complications requiring surgical revision.
The study confirms: the complication rate in dogs under 15 kg is less than that historically reported in heavier dogs.
PubMed retrospective (small and medium dogs, 2.0 and 2.7 mm plates): overall complication rate 36%.
The most common complications were radiographic evidence of delayed healing (9%), patellar tendon thickening (8%), and tibial tuberosity fracture (6%). Only 7% of complications were major.
PLOS One confirms: the TPLO complication rates range from 10% to 34% and vary in severity from swelling and bruising to fractures and osteomyelitis.
Implant-related complications reportedly occur in under 10% of all TPLO procedures.
Long-term success rates
Complication rates must be interpreted alongside long-term success rates.
The retrospective cohort study comparing TPLO, Tightrope, and TTA found: function greater than 1 year after surgery was 93.1% for TPLO, 92.7% for Tightrope, and 89.2% for TTA.
SustainableVet.org confirms: good to excellent long-term outcomes are achieved in 90.4% of patients up to 6.8 years after TPLO surgery; 80 to 90% of owners are satisfied with their dog's long-term recovery.
A dog can have a complication even a significant one like an infection and still achieve a good long-term outcome after the complication is resolved.
The complication rate and the long-term success rate address different aspects of the outcome.
Factors that affect complication and failure rates
Surgeon experience and volume
This is the most consistently cited modifiable risk factor. High-volume specialty centers and board-certified surgeons consistently report lower complication rates than general practitioners performing occasional TPLO procedures.
Surgical efficiency, technique precision, and post-operative protocol standardization all contribute.
Dog size and body weight
Larger dogs generate higher joint forces, have larger dead space at the surgical site, and place more mechanical demand on the implant during healing.
These factors contribute to the higher complication rates seen in large and giant breeds.
Excessive tibial plateau angle (TPA)
Dogs with TPA above 35 degrees (excessive TPA, or eTPA) have higher complication rates.
Today's Veterinary Practice notes: owner-perceived outcome was superior for eTPA group dogs when TPLO resulted in TPA of 14 degrees or less compared to those with TPA greater than 14 degrees.
Postoperative complications were more common in dogs with eTPA.
Post-operative activity restriction compliance
Dogs that are over-active during recovery have higher rates of implant complications, seroma formation, and wound complications.
Strict adherence to the prescribed restriction protocol is the owner's primary contribution to reducing complication risk.
For the complications overview, see 15 common complications after TPLO surgery in dogs. For the infection signs guide, see TPLO plate infection signs and treatment.
For the long-term outcomes guide, see long-term outcomes of TPLO surgery. For the plate removal guide, see TPLO plate removal recovery guide.
Frequently asked questions
What is the TPLO failure rate?
Depends on how "failure" is defined. If failure means any complication: 10 to 34% across studies. If failure means major complications requiring surgery or causing extended lameness: 2 to 7%.
If failure means persistent instability requiring revision with a different technique: uncommon and not consistently reported across large series.
Is TPLO safe for large breed dogs?
Yes, but with a higher complication risk than small dogs. Vetamac confirms: for large breeds, TPLO is still the gold standard, providing better long-term stability than alternatives.
The higher complication rate in large dogs reflects the greater mechanical demands and surgical challenges, not a fundamental unsafety of the procedure.
What percentage of TPLO dogs need a second surgery?
Across published studies, 2 to 10% require a second surgical intervention. Most second surgeries address infection (requiring plate removal), late meniscal tears (requiring partial meniscectomy), or implant complications.
Does my dog's vet experience affect failure rate?
Yes, substantially. Surgeons performing fewer than a set number of TPLO procedures per year have higher complication rates than high-volume specialists.
This is one reason referral to a board-certified orthopedic surgeon (ACVS diplomate) is recommended for TPLO.
If my dog has a complication, does that mean the TPLO failed?
Not necessarily. Many dogs who develop complications including infections requiring plate removal still achieve good to excellent long-term function after the complication is resolved.
The complication rate and the long-term outcome are different measures.
Resources
- Today's Veterinary Practice. Canine Cranial Cruciate Disease: Evidence-Based Look at Current Treatment Modalities. todaysveterinarypractice.com
- PLOS One. Risk Factors for Short-Term Postoperative Complications in Dogs Weighing Less Than 15 kg. journals.plos.org
- PubMed. Short-Term Complications Associated With TPLO in Dogs Using 2.0 and 2.7 mm Plates. pubmed.ncbi.nlm.nih.gov
- PMC. Clinical Relevance of Positive Intraoperative Bacterial Culture in TPLO in Dogs. ncbi.nlm.nih.gov
- Vetamac. TPLO Surgery for Dogs: Success Rates and Alternative Options. vetamac.com

TPLO
5 min read
TPLO Incision Infection? Symptoms & Prevention
Worried about a TPLO incision infection? Learn the symptoms, causes, and best prevention tips to keep your dog’s recovery smooth and infection-free
TPLO incision infection is one of the most common complications after surgery. Most incision infections are preventable with consistent owner-managed wound care, and most are treatable when caught early.
The window between a superficial incision infection (treatable with antibiotics) and a deep implant infection (requiring surgical intervention) is measured in days -- which is why daily inspection is not optional.
Quick answer: Normal TPLO incision healing shows mild redness fading from day 5, no discharge after day 3, and a clean approximated incision line. Infection signs: spreading redness, increasing warmth, cloudy or malodorous discharge, swelling not resolving, wound edges separating, or lameness worsening. Prevention centers on e-collar compliance, dryness, and daily inspection.
Key takeaways
- Licking is the most common preventable cause of TPLO incision infection: the oral cavity carries S. pseudintermedius that can inoculate the incision; e-collar compliance for 10 to 14 days is the most protective owner action
- The distinction between normal healing and early infection is trajectory-based: mild redness and clear serum discharge are normal for 2 to 3 days; anything worsening from day 5 onward warrants veterinary attention
- Infection signs requiring a same-day call: spreading redness, yellow or green discharge, malodorous discharge, wound dehiscence, or systemic signs alongside local wound changes
- Keeping the incision dry is the second most important prevention measure: bacteria proliferate in moist environments; no bathing or wet-grass walks until incision healing is confirmed by the vet
- Daily inspection at the same time each day creates a baseline: daily comparison of today to yesterday reveals whether the incision is improving or worsening
- Most superficial incision infections resolve with oral antibiotics if treated promptly: treatment escalates significantly if deep implant involvement occurs; early action prevents this escalation
Normal TPLO incision healing: what to expect
Understanding normal healing is the prerequisite for recognizing abnormal changes.
Days 1 to 3: acute inflammatory phase
Normal: the incision is red, mildly swollen, and warm. A small amount of clear to pale yellow serum may seep from the wound edges. The swelling may extend slightly beyond the incision line.
Context: this is the inflammatory phase -- the biological response to surgical trauma. It is expected and appropriate.
Days 3 to 5: peak swelling subsides
Normal: redness should be fading. Swelling should begin to reduce. Any discharge should have stopped by day 3. The incision line should be approximated (edges together and not gaping).
Days 5 to 10: healing consolidation
Normal: redness is minimal or absent. No discharge. The incision line is dry and the skin edges are growing together. The dog may experience some surface itching as new skin forms.
Suture/staple removal: typically at 10 to 14 days. The vet confirms incision healing before removal.
Day 14 onward
Normal: incision is healed, sutures removed, skin intact. Mild surface discoloration (pink to pale) is normal for several weeks. No further discharge.
Signs of TPLO incision infection
Spreading redness (most concerning early sign)
Normal healing produces redness confined to the incision line (typically 1 to 2 mm on each side).
Infection produces redness that spreads outward from the incision -- a widening halo of red skin extending beyond the original margins.
SustainableVet.org confirms: redness that worsens, especially with pain or heat, often accompanies infection. Contact your vet the same day if spreading redness is observed.
Warmth that is increasing rather than decreasing
Mild warmth is normal in the first 3 to 5 days.
Warmth that is increasing at day 7 or beyond -- when normal healing produces cooling -- indicates ongoing active inflammation, typically from infection.
Discharge type and timing
- Clear serum for 24 to 48 hours: normal
- Any discharge after day 3: concerning
- Cloudy, yellow, or green discharge at any stage: infection until proven otherwise
- Malodorous discharge: infection; contact vet immediately
SustainableVet.org confirms: inspect the incision daily for redness, swelling, or discharge; yellow or green discharge is not normal and needs immediate attention.
Wound dehiscence
The incision edges separate, exposing subcutaneous tissue or deeper structures. Most often caused by licking, but can occur from excessive activity, suture reaction, or infection undermining the tissue.
SustainableVet.org (complications article) confirms: if stitches are removed too soon or dehiscence occurs, a vet should assess the wound immediately.
Swelling that is not resolving
Expected swelling peaks at days 2 to 5 and consistently resolves after that.
Swelling that is the same or larger at day 7 as it was at day 3 is not following the expected trajectory.
Systemic signs alongside local changes
Fever (rectal temperature above 39.5 C / 103.1 F), lethargy, reduced appetite, or behavioral changes accompanied by any local wound sign constitute an emergency call. These suggest the infection is systemic.
SustainableVet.org (redness article) confirms: systemic signs including fever, lethargy, or loss of appetite along with redness indicate the infection may be spreading; contact your vet immediately.
Prevention: the actions that matter most
1. E-collar compliance without exception
The e-collar prevents the single most common preventable cause of TPLO incision infection: licking. Even one licking episode directly inoculates the wound with oral bacteria.
SustainableVet.org confirms: even brief periods of licking can introduce bacteria; an Elizabethan collar or medical pet shirt should be used at all times until the incision fully heals.
The e-collar must be worn:
- During sleep
- Unsupervised periods in the crate
- Whenever the dog is not under direct eye contact with the owner
If the dog can reach the incision with the collar on, the collar is the wrong size -- contact the vet for a larger size.
2. Keep the incision dry
Moisture promotes bacterial growth and skin maceration at the incision edges. No bathing or submerging the leg until the vet confirms healing at the 2-week recheck.
During wet weather, minimize wet-grass time on outdoor bathroom trips. Pat the leg dry immediately if it gets wet.
SustainableVet.org confirms: keep the incision clean and dry; avoiding moisture reduces infection risks.
3. Daily incision inspection
Inspect the incision at a consistent time each day. Compare today directly to yesterday. The trajectory (better, same, worse) is more diagnostically useful than any single observation.
Inspection takes 30 seconds. Pick a time (e.g., after the evening bathroom walk) and make it routine.
4. Do not clean with unapproved solutions
Unless instructed by your vet, do not apply hydrogen peroxide, alcohol, iodine, or other antiseptics to the incision. These can damage healing tissue and delay closure.
If cleaning is needed, use the vet-approved solution (typically dilute chlorhexidine or sterile saline).
5. Clean bedding weekly
Bedding in contact with the incision area accumulates skin bacteria. Wash crate bedding weekly in hot water.
6. Hand hygiene before touching the wound
Wash hands before any wound inspection or dressing change. Human skin also carries bacteria capable of contaminating an open or healing incision.
Treatment
Superficial infection (SSI-S): oral culture-directed antibiotics for 2 to 4 weeks; wound cleaning; continued e-collar compliance; wound recheck in 3 to 5 days to confirm response.
Progressing or deep infection: surgical debridement; deep culture; IV or long-course oral antibiotics; imaging to assess implant involvement.
Implant-associated infection: see the dedicated TPLO plate infection guide. Treatment typically includes plate removal once the osteotomy has healed.
For the infection signs guide, see earliest signs of TPLO infection. For the prevention mistakes guide, see post-operative care mistakes that increase TPLO infection risk.
For the staph infection guide, see staph infection after TPLO surgery. For the plate infection guide, see TPLO plate infection signs and treatment.
Frequently asked questions
My dog's incision looks red but the vet said it looks normal at the 2-week recheck. Should I still be worried?
If the vet examined the incision in person at 2 weeks and found it normal, trust that assessment. Post-recheck monitoring continues -- if the incision changes after the recheck, contact the vet.
A single normal exam does not guarantee no infection will develop later.
Can I tell the difference between a seroma and an infection at the incision?
Seromas are soft, fluctuant (fluid-filled), non-painful swellings without redness, warmth, or discharge. Infection produces warmth, redness, possible discharge, and pain. If you cannot clearly distinguish the two, contact your vet for assessment.
The incision looked fine yesterday but today there is yellow discharge. What do I do?
Call your vet the same day. Yellow discharge at any point after the first 2 to 3 days is concerning. Do not wait to see if it resolves.
Keep the e-collar on and do not apply any home remedies to the wound before the vet advises.
My dog keeps trying to lick the incision even with the e-collar. What else can I try?
Ensure the collar is the correct size -- most dogs can reach their hind legs with a too-small collar.
A longer cone, a recovery suit (medical pet shirt), or a contact bandage over the incision site (applied by your vet) can supplement the collar.
Ask your vet about trazodone or gabapentin if anxiety is driving the licking behavior.
Does the incision need to be cleaned every day?
In most cases, no. Daily cleaning is not required and may introduce contamination or irritate healing tissue. Daily inspection is required.
Clean only if the vet specifically instructs it and with the approved solution only.
Resources
- SustainableVet. TPLO Incision Infection: Symptoms and Prevention. sustainablevet.org
- SustainableVet. Earliest Signs of TPLO Infection. sustainablevet.org
- SustainableVet. TPLO Plate Infection Signs and Treatment. sustainablevet.org
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO) in Dogs. vcahospitals.com

TPLO
5 min read
Staph Infection After TPLO Surgery: Signs & Risks
Staph infections after TPLO surgery can cause serious issues. Learn how to spot early symptoms, treat infections, and prevent complications
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

TPLO
5 min read
What Does TPLO Stand For in Veterinary Medicine?
Learn what TPLO stands for in veterinary medicine and how this surgical procedure helps dogs with cruciate ligament injuries.
If your dog has been diagnosed with a torn cranial cruciate ligament, you have likely encountered the acronym TPLO possibly before you knew what it meant or why it was being recommended.
TPLO is the most commonly performed CCL surgery in the US. Understanding what the acronym means helps demystify why the surgery works the way it does.
Quick answer: TPLO stands for Tibial Plateau Leveling Osteotomy: Tibial (shin bone), Plateau (upper surface forming the knee), Leveling (making the plateau closer to horizontal), Osteotomy (controlled bone cut). The surgery stabilizes the knee by rotating the tibia, making the CCL biomechanically unnecessary.
Key takeaways
- T = Tibial: the tibia, the shin bone below the knee (stifle) joint
- P = Plateau: the upper tibial surface forming the knee joint; in dogs it has a significant slope called the tibial plateau angle
- L = Leveling: reducing the tibial plateau angle to closer to parallel with the ground, changing joint biomechanics
- O = Osteotomy: a controlled surgical bone cut that allows the tibial segment to be repositioned and fixed
- TPLO does not repair the torn CCL: it changes joint geometry so the ligament becomes biomechanically unnecessary
- TPLO was first described in the early 1980s by Dr. Barclay Slocum and is now the most reliable procedure for CCL disease in dogs
Breaking down each word
T Tibial
The tibia is the main weight-bearing bone of the lower leg, running from the knee (stifle) joint to the ankle (tarsus).
In dogs, the tibia is not perfectly vertical it angles slightly forward relative to the femur above it. This angle contributes to the mechanical forces that act on the stifle during weight-bearing.
Veterinary Partner (VIN) explains: tibial refers to the shin bone.
P Plateau
The tibial plateau is the upper, relatively flat surface of the tibia that contacts the bottom of the femur to form the stifle joint.
Unlike in humans, where the tibial plateau is nearly horizontal, in dogs it has a significant slope the tibial plateau angle (TPA).
A steeper TPA creates more cranial tibial thrust during weight-bearing, which is the force that normally the CCL resists.
Veterinary Partner (VIN) defines it as: the upper surface of the shin bone; the bottom of the knee joint.
L Leveling
Leveling refers to the goal of the surgery: reducing the tibial plateau angle to approximately 5 degrees, making it closer to parallel with the ground.
When the tibial plateau is leveled, the femur no longer tends to slide forward relative to the tibia during weight-bearing the cranial tibial thrust is neutralized.
This is why a functioning CCL is no longer required after TPLO.
Veterinary Partner (VIN) defines it as: making the plateau more parallel to the ground.
O Osteotomy
An osteotomy is a controlled surgical cut through a bone a deliberate, planned fracture performed under anesthesia to allow repositioning of a bone segment.
TPLO involves a curved osteotomy through the proximal tibia, creating a segment that is rotated to the new angle and fixed with a bone plate and screws during healing.
Veterinary Partner (VIN) defines it as: a bone-cutting procedure like a controlled fracture of the bone.
Why TPLO was developed
Before TPLO, the dominant approach to CCL repair was extracapsular stabilization placing sutures outside the joint to mimic the CCL's function.
While effective in small dogs, this approach was unreliable in large, active dogs because the suture material eventually stretched or failed, and the joint depended on periarticular scar tissue for long-term stability.
Veterinary Specialty Center explains: TPLO changes the biomechanics of the knee so the joint can remain stable without relying on the damaged CCL.
Instead of replacing the torn ligament, it changes the mechanics of the knee entirely.
DVM360 confirms: TPLO alters the mechanical forces acting on the stifle, rendering the cranial cruciate ligament unnecessary.
Dr. Barclay Slocum first described TPLO in the early 1980s.
Veterinary Partner (VIN) notes that much research has been done since to refine the technique, and it has emerged as the most reliable technique for CCL disease management in dogs.
How TPLO differs from human ACL surgery
This is one of the most common points of confusion for owners.
In humans, ACL surgery typically involves replacing the torn ligament with a graft (taken from the patient's hamstring, patellar tendon, or a donor).
The new ligament is reconstructed to restore normal joint function.
TPLO does not reconstruct the CCL. It bypasses the need for a functioning CCL entirely by changing joint geometry.
Veterinary Specialty Center confirms: in people, ACL surgery replaces the torn ligament; in dogs, TPLO changes knee mechanics so the joint functions without the CCL.
This is why dogs cannot "re-tear" their CCL after TPLO there is no ligament replacement to fail. The stability provided by TPLO is structural and permanent.
What TPLO treats and who it is for
TPLO is used to treat cranial cruciate ligament (CCL) rupture the canine equivalent of the human ACL.
CCL rupture is the most common cause of hind limb lameness in dogs and costs US dog owners over $1 billion annually.
The ACVS recommends TPLO as the most commonly performed procedure for dogs over 60 lbs. It is also recommended for smaller dogs where long-term mechanical stability and minimal arthritis progression are priorities.
For the surgical causes guide, see what causes TPLO surgery to be needed in dogs. For the full surgical overview, see what is TPLO surgery in dogs?.
For the pros and cons of the procedure, see TPLO surgery pros and cons for dogs.
Frequently asked questions
Does TPLO stand for the same thing in all dogs?
Yes. The acronym and the procedure are the same regardless of breed, size, or the specific implant system used (Arthrex or Synthes).
The variation between cases is in the amount of tibial rotation required (based on the individual TPA), the plate size selected, and the post-operative protocol.
Is TPLO the same as TTA?
No. TTA (Tibial Tuberosity Advancement) is a different procedure with a similar goal both change knee biomechanics rather than replacing the CCL.
TTA advances the tibial tuberosity cranially rather than rotating the tibial plateau. They achieve knee stabilization through different geometric approaches.
Why is it called leveling if the bone is rotated?
The rotation of the tibial bone segment achieves the leveling.
When the proximal tibial segment is rotated, the angle of the tibial plateau changes it becomes less sloped, i.e., more level relative to the ground.
The procedure is named for the result (leveling) rather than the method (rotation).
Was TPLO invented for dogs?
Yes. TPLO was developed specifically for veterinary use in dogs in the early 1980s by Dr. Barclay Slocum.
It was developed because the canine stifle's anatomy and biomechanics differ significantly from the human knee particularly the steep tibial plateau angle that is uniquely problematic in dogs.
Why is TPLO preferred over other CCL surgeries for large dogs?
Large, active dogs generate higher joint forces than small dogs.
Extracapsular repair (lateral suture) provides stability through scar tissue formation adequate for small dogs but inadequate for the forces generated by large, active breeds.
TPLO provides bone-based mechanical stability that is not dependent on scar tissue, making it more durable and reliable for larger patients.
Resources
- Veterinary Partner (VIN). TPLO Surgery. veterinarypartner.vin.com
- VCA Animal Hospitals. Tibial Plateau Leveling Osteotomy (TPLO). vcahospitals.com
- DVM360. Understanding Tibial Plateau Leveling Osteotomies in Dogs. dvm360.com
- Veterinary Specialty Center. TPLO Surgery for Dogs. vetspecialty.com
- ACVS. Cranial Cruciate Ligament Disease. acvs.org




