A torn cranial cruciate ligament (CCL) — usually called a torn ACL in dogs — is one of the most common reasons dogs need orthopedic surgery, and one of the most expensive decisions owners face. Quotes often range from under $1,000 to more than $6,000 per knee, and vets may offer two or three very different options.
This guide covers what each option typically costs, what the evidence says about which dogs do well without surgery, and the part most estimates leave out: the chance that the other knee will need the same treatment.
The Options and What They Cost
Typical US price ranges, per knee:
| Option | What it does | Typical cost |
|---|---|---|
| TPLO (tibial plateau leveling osteotomy) | Cuts and re-angles the top of the shin bone so the knee is stable without the ligament | About $2,800–$6,400; national average around $3,500; specialty hospitals up to $7,500+ |
| TTA (tibial tuberosity advancement) | Moves the front of the shin bone forward to change the forces on the knee | About $3,000–$6,000 |
| Lateral suture (extracapsular repair) | Places a strong suture outside the joint to act like the ligament | About $750–$2,000 at general practices; about $2,250–$3,200 at surgical practices |
| Non-surgical management | Weight loss, pain relief, physical therapy and activity control | Ongoing: medication, rehab sessions and rechecks |
Common extra costs:
- Consultation and X-rays before surgery — X-rays alone often cost about $150–$330.
- Rehabilitation after surgery, whether a few sessions with a therapist or a home exercise program.
- Home equipment: a crate or pen, non-slip rugs, a support harness and a cone.
Some estimates include all of these and some include only the surgery, so ask for a full written estimate covering the consultation, imaging, surgery, hospital stay, take-home medication and rechecks.
Which Option Suits Which Dog
Size and activity level drive most recommendations:
- Small dogs are often good candidates for a lateral suture, and many do well without surgery at all.
- Medium, large and very active dogs are usually steered toward TPLO or TTA, which change the knee’s mechanics rather than relying on a suture to hold.
The research on surgery versus no surgery is thinner than many owners expect, but it consistently points to weight:
- Vasseur (1984) followed dogs managed without surgery. 86% of dogs under 15 kg (33 lb) were normal or improved about three years later, compared with only 19% of dogs over 15 kg.
- Wucherer et al. (2013), the only randomized trial, studied overweight dogs over 20 kg (44 lb). After a year, 75% of the surgically treated dogs and 64% of those managed without surgery had successful outcomes. Both groups also had weight loss, physical therapy and an anti-inflammatory drug. The study was small, so the gap between the groups is uncertain.
A Veterinary Evidence knowledge summary concluded that it isn’t strong enough to say surgery is always better than conservative care. In practice that means a small dog, or a dog that isn’t a good candidate for anesthesia, may reasonably be managed without surgery, while surgery is usually the more reliable route for bigger, active dogs. Your vet’s examination of the knee, including whether the meniscus is damaged, changes the picture for each dog.
Budget for the Other Knee
This is the cost most estimates don’t mention. Cruciate disease in dogs is usually a gradual degeneration of the ligament rather than a single accident, and it often affects both knees.
- In Muir et al. (2011), a study of 380 dogs that had torn one CCL, the median time until the other knee’s ligament also tore was 947 days — about two and a half years. In other words, half of the dogs had torn the second one by then.
- In the Wucherer (2013) trial, 27.5% of dogs tore the other knee during the one-year study.
If your dog has TPLO on one knee, it’s sensible to plan for the possibility of a second surgery in the next few years. Two TPLOs at a typical price can approach $7,000–$10,000 in total.
The same logic is why keeping your dog lean after the first surgery matters so much: less weight means less strain on the knee that’s still intact. Our Dog Weight Calculator and Pet Food Calorie Calculator help with the target.
Recovery
After TPLO, expect about 8 to 12 weeks of strict activity restriction: leash-only toilet trips at first, no running, jumping or stairs, and gradually longer leash walks. Rechecks with X-rays usually happen every 4 to 6 weeks to confirm the bone is healing. Rehabilitation exercises help rebuild the thigh muscles that waste quickly after a knee injury.
Our Post-Surgery Recovery Checklist covers setting up the house before your dog comes home.
Living With It Without Surgery
If you and your vet choose non-surgical management, the plan usually includes:
- Weight loss, the single most effective step for an overweight dog.
- Pain control, such as a daily anti-inflammatory or a monthly injection. Our Librela Cost for Dogs guide compares the two.
- Physical therapy and controlled exercise to build muscle around the knee.
- Regular rechecks, because arthritis develops in the affected knee over time.
The Dog Mobility & Arthritis Screening tool gives you a consistent way to track how your dog is doing.
A Note on Insurance
Accident-and-illness policies often cover cruciate surgery, but torn cruciate ligaments are commonly treated as a bilateral condition. Most policies won’t cover a bilateral condition diagnosed before coverage began, so a dog that tore one knee before you bought the policy may be excluded for the other knee too. Some insurers also set longer waiting periods for orthopedic problems. Our Pet Insurance Waiting Period Tracker shows when coverage actually starts.
Frequently Asked Questions
How much does TPLO surgery cost for a dog? Usually about $2,800–$6,400 per knee, with a national average of around $3,500; quotes at specialty hospitals can reach $7,500 or more. The price typically depends on the surgeon, the region and the dog’s size, and it may or may not include the consultation, X-rays, hospital stay, pain medication and rechecks, so compare full estimates rather than headline prices.
Is a lateral suture cheaper than TPLO? Yes, usually. A lateral suture (extracapsular repair) typically costs about $750–$2,000 at a general practice and roughly $2,250–$3,200 at surgical practices. It is most often recommended for smaller dogs, while TPLO or TTA, which change the shape of the knee, are usually preferred for medium, large and very active dogs.
Can a dog’s torn ACL heal without surgery? The ligament itself doesn’t heal back to full strength, but many small dogs become comfortable without surgery. In an older study, 86% of dogs under 15 kg (33 lb) managed without surgery were normal or improved years later, compared with 19% of heavier dogs. In a small randomized trial of overweight dogs over 20 kg, 75% did well after surgery and 64% without it, when both groups also had weight loss, physical therapy and pain medication.
Will my dog tear the ACL in the other knee? It’s common. In a study of 380 dogs that had torn one cranial cruciate ligament, the median time before the other knee’s ligament also tore was 947 days — about two and a half years — meaning half of the dogs had torn the second one by then. In a separate trial, 27.5% of dogs tore the other knee during the one-year study.
How long is recovery after TPLO? Usually about 8 to 12 weeks of strict activity restriction, with rechecks and X-rays every 4 to 6 weeks to confirm the bone is healing. Leash walks are gradually lengthened over that time. Rehabilitation exercises, at home or with a rehab therapist, are commonly recommended to rebuild muscle.
Does pet insurance cover ACL surgery? Accident-and-illness policies often do, but torn cruciate ligaments are commonly treated as a bilateral condition. Most policies won’t cover a bilateral condition diagnosed before coverage began, which means a dog that tore one knee before you bought the policy may also be excluded for the other knee. Some insurers also have longer waiting periods for orthopedic problems, so check the policy wording.
Related Articles
- Librela Cost for Dogs — pain relief for dogs managed without surgery
- Dog Mobility & Arthritis Screening
- Post-Surgery Recovery Checklist
- How to Tell If Your Dog Is Overweight