ACL (cruciate ligament) surgery costs $3,000-$6,000 per knee. TPLO and TTA reshape the bone to stabilize the joint without the torn ligament. About 40-60% of dogs tear the other ACL within 1-2 years, potentially doubling the cost.
What Is It
The cranial cruciate ligament stabilizes the knee. When torn, the joint becomes unstable, causing pain, lameness, and rapid arthritis. Dogs rarely heal with rest; surgery is standard for medium to large dogs.
Affects all breeds but large dogs most often
The Process
TPLO rotates the tibia to change joint angle; TTA advances the tibial tuberosity. Both achieve similar results via different methods, require metal implants, and take 1-2 hours under anesthesia.
TPLO is the most recommended technique
Cost Breakdown $3,000-$6,000
TPLO: $3,500-$6,000 per knee. TTA: $3,000-$5,000. Lateral suture: $1,000-$2,500. Includes diagnostics, surgery, implants, anesthesia, hospitalization, medication, and follow-up. Board-certified surgeons charge more but have higher success rates.
Recovery & Aftercare
Strict rest for 6-8 weeks: leash walks only, no stairs or jumping. Physical therapy recommended. Gradual return to activity weeks 8-16. Follow-up X-rays at 6-8 weeks confirm healing. Full activity at 4-6 months.
Full recovery in 8-16 weeks
Total Cost $3,000-$6,000
Per knee. If both knees need surgery, expect $6,000-$12,000 total. Physical therapy adds $50-$100 per session.
Success Rate 90-95%
TPLO has a 90-95% success rate. Most dogs return to normal or near-normal activity. Complications include infection and implant failure.
Duration 1-2 Hours
Surgery takes 1-2 hours. Most dogs stay overnight for monitoring and pain management.
When It's Needed
When the cruciate ligament is partially or fully torn. Recommended for dogs over 30 pounds - smaller dogs may do well with conservative management.
The Real Cost
$3,000typical cost
Per knee.
Cost Breakdown $3,000-$6,000
Total Cost $3,000-$6,000
Red flags
Insurance Traps
ACL surgery is one of the most common large claims. Insurers know it - and have specific rules.
Coverage Basics Coverage
Most policies cover ACL surgery if enrolled before lameness or knee issues appear. ACL tears are one of the most frequently claimed conditions in pet insurance. Coverage includes diagnostics, surgery, hospitalization, medication, and follow-up visits. Some policies cover physical therapy.
Waiting Period Warning Waiting period
Many insurers impose a 6-month orthopedic waiting period for cruciate ligament issues. Any lameness during this period may permanently exclude ACL. ACL tears are classified as illness, not accident, by most insurers.
Cost vs Deductible Deductible
At $3,000-$6,000 per knee, insurance proves its value. With a $500 deductible and 80% reimbursement, you save $2,000-$4,400 per knee. Both knees double the savings. This condition can pay for years of premiums.
Bilateral Exclusion Trap Bilateral
Some insurers treat bilateral ACL as a single condition - one deductible and one annual limit for both knees. Others treat each separately. If treated before enrollment, the second knee may be excluded as pre-existing. Read the fine print.
Common Questions
Real answers about costs, treatment, and insurance coverage.
How much does ACL surgery cost for a dog?
TPLO: $3,500-$6,000 per knee. TTA: $3,000-$5,000. Lateral suture: $1,000-$2,500. All include diagnostics, anesthesia, implants, hospitalization, medication, and follow-up. Board-certified surgeons charge more. About 40-60% of dogs eventually need the second knee done.
What is the difference between TPLO and TTA?
Both change knee geometry so the torn ligament isn't needed. TPLO rotates the tibia; TTA advances the tibial tuberosity. Both have ~90-95% success rates. TPLO is more widely performed with more long-term data. Your surgeon recommends based on your dog's anatomy.
Can a dog recover from a torn ACL without surgery?
Small dogs under 30 lbs sometimes manage with rest, anti-inflammatories, and physical therapy. For dogs over 30 lbs, conservative management rarely works. The unstable knee leads to meniscus damage, chronic pain, and arthritis. Surgery is strongly recommended for medium to large dogs.
How long is recovery after ACL surgery?
Expect 8-16 weeks of restricted activity. Strict rest and leash-only walks for 6-8 weeks. X-rays at 6-8 weeks confirm healing. Gradual return to activity weeks 8-16. Full activity at 4-6 months. Physical therapy speeds recovery.
Will my dog need surgery on the other knee too?
About 40-60% tear the other ACL within 1-2 years - the second knee bears extra strain. Keep your dog lean, use joint supplements, and avoid high-impact activities to reduce risk. Maintain insurance coverage given this likelihood.
What are signs of a torn ACL in dogs?
Sudden lameness, holding up a back leg, sitting with leg extended sideways, difficulty rising, knee swelling, clicking when walking, and stiffness after rest. Some tears happen suddenly; others develop gradually.
What happens if ACL surgery is not done?
The unstable knee develops progressive arthritis, meniscus tears, and chronic pain. Weight shifts to other legs. Most medium to large dogs develop significant lameness and require long-term pain management.
Does pet insurance cover ACL surgery for dogs?
Yes, if enrolled before symptoms appear. Many impose a 6-month orthopedic waiting period. Bilateral clauses may affect the second knee. Enroll early and keep records of clean exams.
My mother-in-law's boxer. Problem. $1,200 in tests, no answers. Another vet solved it with $8 pills. When you're scared, you'll pay anything - and some vets price accordingly. So I built what I couldn't find: real costs, real exclusions, plain language. Not selling policies.
Sources
Research and data used to compile this profile.
- 1 Witsberger TH, Villamil JA, Schultz LG, Hahn AW, Cook JL. Prevalence of and risk factors for hip dysplasia and cranial cruciate ligament deficiency in dogs. J Am Vet Med Assoc. 2008;232(12):1818-24.
- 2 Krotscheck U, Nelson SA, Todhunter RJ, Stone M, Zhang Z. Long term functional outcome of tibial tuberosity advancement vs. tibial plateau leveling osteotomy and extracapsular repair in a heterogeneous population of dogs. Vet Surg. 2016;45(2):261-8.
- 3 Bergh MS, Budsberg SC. Systematic review of surgical treatments for cranial cruciate ligament disease in dogs. J Am Anim Hosp Assoc. 2014;50(5):315-21.