Last updated: September 2026
Quick answer: Cruciate ligament surgery for a dog in the UK typically costs £2,500 to £4,500 per knee, depending on the technique, the size of your dog and where you live. Simpler repairs such as a lateral suture cost less, while bone-cutting procedures such as TPLO cost the most. Many dogs later need the other knee done too, which can double the bill. Pet insurance usually covers cruciate surgery if your dog had no signs of knee problems before the policy started, but bilateral exclusions and low vet fee limits catch many owners out.
Cruciate ligament damage is one of the most common reasons for orthopaedic surgery in dogs, and one of the most common big insurance claims. This guide explains what each option costs, what the bill includes and how to make sure your insurance pays.
How much does cruciate surgery cost?
| Option | Typical cost | Usually suited to |
|---|---|---|
| Conservative management (rest, pain relief, weight control, physio) | Cost of medication and physiotherapy over several weeks or months | Smaller dogs, under about 10kg, and dogs with mild signs |
| Lateral (extracapsular) suture | Around £1,000, according to one UK veterinary surgeon’s published figures | Smaller and lighter dogs |
| TPLO or other bone-cutting (osteotomy) techniques | Around £4,000 in the same surgeon’s figures | Medium and large, active dogs |
| Typical range across UK practices | £2,500 to £4,500 per knee | Most dogs needing surgery |
The vet surgeon’s figures above are older and prices have risen since, so treat them as a guide to the gap between techniques rather than current prices. Your vet will recommend a technique based on your dog’s size, age and activity level; the cheapest option is not always suitable.
What the bill usually includes
A cruciate estimate normally covers some or all of the following. Ask which items are included before you agree:
- Consultation and orthopaedic examination
- X-rays, usually under sedation
- Anaesthetic and the surgery itself, including implants
- Hospital stay and pain relief
- Post-operative check-ups and follow-up X-rays
- Physiotherapy or hydrotherapy, which is often charged separately
If the surgery is done at a referral centre, the referral consultation and scans are added on top. For what a standard appointment costs, see vet consultation costs.
The second knee
Cruciate disease often affects both knees over time. When the other knee also needs surgery, bilateral cases double the bill across 12 to 18 months. This is the main reason cruciate problems can exhaust a low vet fee limit, and why the way your policy treats “bilateral” conditions matters so much.
Does pet insurance cover cruciate surgery?
Usually, yes, on accident and illness policies, as long as your dog showed no signs of the problem before the policy started or during the waiting period. Four things decide whether a claim is paid in full:
- Pre-existing signs. Any limping or knee stiffness recorded in the vet notes before cover began can lead to an exclusion. See pre-existing conditions.
- Bilateral wording. Many policies treat cruciate disease as a condition affecting both knees. If one knee had problems before the policy started, the other may be excluded too.
- Your vet fee limit. A £2,000 limit won’t cover a single knee at typical prices, let alone two. See how much vet fee cover you need.
- Your policy type. Follow-up care can continue for months. Only lifetime cover resets every year; see lifetime vs time-limited vs maximum benefit cover.
Some insurers also apply longer waiting periods for cruciate problems than for other illnesses, so check your policy wording.
When the insurer gets it wrong: an Ombudsman example
Bilateral clauses are not the final word. In one published decision, an insurer refused a claim for cruciate disease in a dog’s right leg because the left leg had been treated for the same disease about 18 months earlier, classing it as a pre-existing bilateral condition. The owner took the complaint to the Financial Ombudsman Service, and the investigator upheld it. If your claim is refused on similar grounds, ask your vet for a written opinion on whether the two knees are connected, and complain; see what to do if a claim is rejected.
How to avoid a nasty surprise
- Get a written estimate that lists what is and isn’t included.
- Send it to your insurer for pre-approval before a planned operation.
- Ask about direct payment so the insurer pays the practice and you only pay your excess and any co-payment. See excess and co-payment explained.
- Ask about the other knee and how your policy would treat it.
- If you can’t afford it, talk to your vet about options before deciding. The PDSA advises owners to speak to their vet if they can’t afford the recommended treatment, as there may be other options. See what happens if you can’t pay.
Frequently asked questions
Can a dog recover from a cruciate injury without surgery?
Some can, especially smaller dogs with mild signs, through rest, pain relief, weight control and physiotherapy. Your vet will advise whether that is realistic for your dog.
Why is TPLO more expensive?
It involves cutting and re-shaping the shin bone and fixing it with a plate and screws, which takes more specialist skill, time and equipment.
How much does cruciate surgery cost for a small dog?
Usually less than for a large dog, because simpler techniques are often suitable and less anaesthetic is needed.
Will insurance cover the second knee?
It depends on your policy’s bilateral wording and whether the first knee was already a problem before the policy started. Ask your insurer in writing.
Is pet insurance worth it for a dog at risk of cruciate problems?
For large, active breeds it often is. See is pet insurance worth it?
Key takeaways
- Cruciate surgery typically costs £2,500 to £4,500 per knee in the UK.
- The technique, your dog’s size and your location drive the price.
- The second knee often follows, which can double the total.
- Insurance usually pays if there were no earlier signs, but check bilateral wording and your vet fee limit.
Prices are typical ranges, not quotes. This guide is not veterinary advice; your vet will recommend the right treatment for your dog.