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CBLO Surgery in Dogs: Cost, Recovery & Success Rate

CBLO Surgery in Dogs: Cost, Recovery & Success Rate

General Tips

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Owners

Learn about CBLO surgery in dogs, including cost, recovery time, and success rates to help you make informed decisions for your pet's health.

By 

Sustainable Vet Group

Updated on

August 13, 2026

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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.

CBLO Surgery in Dogs: Cost, Recovery & Success Rate

CBLO CORA-Based Leveling Osteotomy is one of the newer surgical procedures for treating cranial cruciate ligament (CCL) rupture in dogs.

It shares the same fundamental goal as TPLO: reduce the tibial plateau angle so the stifle joint is stable without a functioning CCL.

The key difference is in how the bone cut is planned and made.

 

Quick answer: CBLO achieves 90 to 95% success: 77% of dogs returned to full function and 19% to acceptable function at 12 months; 93% of owners were satisfied. Recovery takes 3 to 6 months. Cost is $3,000 to $6,000+, comparable to TPLO.

 

Key takeaways

  • CBLO achieves 90 to 95% success in regaining complete or near-complete leg function (RCVS Knowledge)
  • PubMed: 77% full function, 19% acceptable function at 11.9 months; 93% of owners satisfied at 12 months
  • Recovery takes 3 to 6 months with strict activity restriction and structured rehabilitation
  • Cost is similar to TPLO: approximately $3,000 to $6,000+ at specialist hospitals; some practices charge $4,000 to $5,500 for CBLO
  • CBLO suits dogs with unusual tibial geometry: it corrects individual bone angles rather than using a fixed-angle cut
  • Late meniscal tears are the most common complication: 6 of 70 stifles (8.6%) in the primary PubMed study

What is CBLO surgery?

CBLO stands for CORA-Based Leveling Osteotomy. CORA stands for Center of Rotation of Angulation.

RCVS Knowledge: CBLO "involves adjusting the tibial plateau by cutting the bone with a purpose-made saw, rotating the cut portion, and securing it in a new position with a plate and screws."

RCVS Knowledge: "In dogs, the tibial plateau slopes downwards. During normal weight-bearing, the cranial cruciate ligament acts to prevent the shinbone from slipping forwards.

In dogs with cranial cruciate ligament disease, this movement is not resisted, which causes the knee joint to give way, causing pain and lameness."

The aim of CBLO like TPLO is to level the tibial plateau enough that the femur rests stably on the tibia during weight-bearing, eliminating the need for a functioning CCL.

The key technical difference from TPLO: CBLO uses the CORA method to precisely identify the point of maximum angulation in the dog's tibia and plans the osteotomy to correct that specific angle. TPLO rotates the tibial plateau to a fixed target angle (typically 5 degrees) using a standardized approach. CBLO is more individualized.

Warm Springs Pet Hospital: "CBLO has the advantages of both the TPLO, by leveling the tibial plateau, and the TTA, by moving the patellar tendon forward.

This surgery is well suited for dogs that are still growing or dogs with an excessive tibial slope."

Who is CBLO for?

CBLO is performed for CCL rupture in dogs, the same indication as TPLO. Specific scenarios where CBLO may be particularly well-suited:

  • Dogs with steep tibial plateau angles that exceed the normal TPLO target range
  • Dogs with unusual tibial geometry where a standardized TPLO cut would be suboptimal
  • Skeletally immature dogs (still growing), where the CORA-based approach avoids the growth plate
  • Surgeons who prefer CORA-based planning for its individualized precision

SustainableVet: "CBLO offers precise correction tailored to the dog's unique bone structure, potentially improving joint mechanics and reducing arthritis risk."

SustainableVet: "CBLO's individualized correction may be more suitable for unusual bone shapes."

CBLO success rate and clinical evidence

Primary clinical study (PubMed, 2016)

PubMed (owner evaluation study): "CORA-based leveling osteotomy was used for 70 stifles with CCL injury. Mean time to final radiographic recheck was 107 days."

PubMed: "Fifty-four of the 70 (77%) dogs had full function, 13 (19%) had acceptable function, and 3 (4%) had unacceptable function."

PubMed: "Complications occurred in 11 stifles (16%), including 3 incisional, 6 late-onset meniscal tears, and 2 implant related."

RCVS Knowledge / Canine Cruciate Registry

RCVS Knowledge: CBLO achieves "90 to 95% of dogs regaining complete or near-complete function" and 93% owner satisfaction at 12 months.

Biomechanical validation

PubMed (pressure-sensitive walkway study, 2022): 15 CBLO-treated dogs were assessed at a mean of 50 weeks post-surgery.

"The mean hind limb symmetry index for the 15 CBLO-treated dogs and the 20 healthy control dogs was 1.02 and 1.03, respectively, the difference being not significant."

This means CBLO-treated dogs achieved a symmetry index statistically identical to healthy controls objective evidence of full functional recovery in this cohort.

PMC (kinematics study): CBLO "mitigated but did not fully resolve abnormal craniocaudal translation; lameness was substantially improved at 6 months."

This finding is consistent with TPLO data no procedure fully restores normal stifle kinematics, but clinical outcomes remain excellent.

How CBLO compares to TPLO

FeatureCBLOTPLO
Bone cut planningCORA-based (individualized)Fixed target angle (standardized)
Evidence baseNewer; fewer studiesExtensive; 25+ years of data
Success rate90 to 95%90 to 95%
CostSimilarSimilar
Recovery time3 to 6 months3 to 4 months
Best forUnusual geometry; steep slopesStandard anatomy; most breeds
Complication rateSimilar (~16% in primary study)11 to 34% in various studies

 

SustainableVet: "Choosing between CBLO and TPLO depends on your dog's anatomy, breed, and lifestyle. Both surgeries aim to stabilize the knee and reduce pain.

Consulting your veterinarian will help you decide the best option."

Cost

CBLO is a specialist procedure requiring a surgeon trained specifically in the CORA-based planning method. Cost is broadly comparable to TPLO:

  • General range: $3,000 to $6,000+ per stifle at specialist hospitals
  • Warm Springs Pet Hospital (example): CBLO is one of the CCL repair options offered alongside TPLO ($5,200 at that clinic)

SustainableVet: "Recovery typically takes 3 to 6 months, with strict rest and physical therapy essential for proper healing."

Additional costs: pre-surgical diagnostics ($200 to $500), post-operative radiographs, rehabilitation/physiotherapy ($100 to $200 per session), and medications.

Recovery timeline

TimeframeRecovery milestone
Days 1 to 7Minimal weight bearing, pain management, restricted to leash walks only
Weeks 2 to 4Gradual increase in short leash walks; no free running or jumping
Weeks 4 to 8Continued gradual activity increase; post-operative radiographs to confirm healing
Months 2 to 4Progressive return to normal activity; rehabilitation exercises
Months 4 to 6Most dogs return to full activity; radiographic healing confirmed

 

RCVS Knowledge: "Around 50% of dogs will develop cranial cruciate ligament disease in the other hind limb; in some cases, CBLO may be performed on both knees."

Complications

PubMed (primary study): complications in 11 of 70 stifles (16%):

  • 6 late-onset meniscal tears (most common complication)
  • 3 incisional complications
  • 2 implant-related complications

RCVS Knowledge: all dogs with CCL rupture are expected to develop some osteoarthritis in the affected joint, but surgery reduces or delays its progression.

For the cruciate ligament causes guide, see what causes cruciate ligament tears in dogs. For the surgery vs. conservative management decision, see canine cruciate injuries: surgery vs. conservative management.

For the meniscal tear cost context, see torn meniscus surgery cost in dogs. For when this surgery requires specialist referral, see when to refer for orthopedic surgery.

For home care after surgery, see post-op home care for pets after orthopedic surgery.

Frequently asked questions

Is CBLO better than TPLO?

Neither procedure is universally superior. Both achieve 90 to 95% success rates. CBLO's individualized planning may benefit dogs with unusual tibial geometry or very steep slopes.

TPLO has decades of evidence and is more widely available. Discuss which is most appropriate for your dog's specific anatomy with a board-certified orthopedic surgeon.

How long does a dog take to walk after CBLO?

Most dogs bear some weight within a few days of surgery. By 2 to 4 weeks, most are taking short leash walks.

Full return to normal activity is expected at 4 to 6 months. The pressure-sensitive walkway study found symmetric limb loading by a mean of 50 weeks post-surgery.

Does my dog need CBLO on both legs?

Not at the same time in most cases. RCVS Knowledge: around 50% of dogs will develop CCL disease in the other limb.

If both are affected, most surgeons stage the procedures 8 to 16 weeks apart to allow initial recovery before the second surgery.

Can a small dog have CBLO surgery?

Yes. CBLO can be used in dogs of various sizes. Warm Springs Pet Hospital notes it suits dogs still growing and those with excessive tibial slope.

Discuss with your surgeon whether CBLO is technically appropriate for your small dog's bone geometry.

What is the risk of the meniscus tearing after CBLO?

The PubMed primary study found late-onset meniscal tears in 6 of 70 stifles (8.6%). This is the most common complication.

The meniscus is assessed at the time of CBLO surgery; if a tear is found, it is treated concurrently. Late tears after surgery are treated with a return arthroscopic procedure if symptomatic.

How do I find a surgeon who performs CBLO?

CBLO is a specialist procedure. Search the ACVS (American College of Veterinary Surgeons) directory for board-certified surgeons in your area and ask specifically whether they offer CBLO.

Not all ACVS-certified surgeons perform CBLO some specialize in TPLO or TTA so confirm before booking a consultation.

Resources

  • RCVS Knowledge / Canine Cruciate Registry. CORA-Based Levelling Osteotomy (CBLO). ccr.rcvsknowledge.org
  • PubMed. Owner Evaluation of a CORA-Based Leveling Osteotomy for Treatment of Cranial Cruciate Ligament Injury in Dogs. ncbi.nlm.nih.gov
  • PubMed. Evaluating the Outcome after CBLO Using a Pressure-Sensitive Walkway System. ncbi.nlm.nih.gov
  • PMC. Stifle Kinematics in 4 Dogs Treated by CORA-Based Leveling Osteotomy. ncbi.nlm.nih.gov
  • Warm Springs Pet Hospital. Torn ACL in Dogs. warmspringspet.com

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