What Is TPLO Surgery for Dogs?

What does TPLO stand for?

TPLO stands for Tibial Plateau Levelling Osteotomy. It is a surgical procedure commonly used to treat cranial cruciate ligament injuries in dogs. The cranial cruciate ligament helps stabilise the knee joint, and when it becomes damaged or ruptures, it can cause pain, limping and ongoing joint instability.

Rather than replacing the damaged ligament directly, TPLO surgery changes the angle of the top of the shin bone so the knee can function more comfortably and with greater stability.

Why might a dog need TPLO surgery?

Dogs with cruciate ligament injuries often show signs such as sudden limping, stiffness after rest, difficulty getting up, or reluctance to run, jump or use stairs. Some dogs develop the problem gradually, while others appear lame very suddenly.

Cruciate disease is one of the most common causes of hind leg lameness in dogs. Without treatment, the knee remains unstable, which can lead to pain, reduced mobility and worsening arthritis over time.

Common signs of a cruciate injury in dogs

• Limping on a back leg
• Difficulty standing up or sitting down
• Stiffness after exercise or rest
• Reluctance to jump, run or climb stairs
• Reduced activity levels
• Pain or discomfort around the knee joint

How does TPLO surgery work?

TPLO surgery works by changing the biomechanics of the knee joint. During the procedure, the top part of the tibia is carefully cut and rotated to create a more level surface. This helps reduce the forward movement that happens in an unstable knee when the cruciate ligament is no longer doing its job properly.

Once the bone has been repositioned, it is secured with a specialised plate and screws. As the bone heals, the knee becomes more stable, helping many dogs regain improved comfort and mobility.

Which dogs are suitable for TPLO surgery?

TPLO is often recommended for active dogs, medium to large breeds, and dogs that need a strong and reliable return to movement. However, suitability always depends on the individual dog, their size, weight, lifestyle, overall health and the condition of the knee.

A full orthopaedic assessment is important before surgery is recommended. Your vet will discuss the options with you and explain whether TPLO is likely to be the most appropriate treatment for your dog.

What is recovery like after TPLO surgery?

Recovery after TPLO surgery takes time and careful management. Most dogs need a period of restricted exercise, followed by gradual rehabilitation. The exact recovery plan can vary, but it usually includes rest, controlled lead walks, pain relief, follow-up checks and a gradual return to normal activity.

Many dogs benefit from physiotherapy as part of their recovery, particularly when rebuilding strength, improving joint movement and returning to confidence on the operated leg.

Recovery may include

• Strict rest in the early stages
• Short, controlled lead walks
• Regular post-operative check-ups
• Pain relief and anti-inflammatory medication where needed
• A tailored rehabilitation or physiotherapy plan

What are the benefits of TPLO surgery?

For many dogs, TPLO surgery offers excellent long-term improvement in comfort and function. The main aim is to create a more stable knee joint, reduce pain and help your dog return to daily activities with greater confidence.

Potential benefits of TPLO include

• Improved knee stability
• Reduced pain during movement
• Better long-term mobility
• Support for active and larger dogs
• A more comfortable return to everyday life

When should you speak to a vet?

If your dog is limping, struggling on a back leg, or seems uncomfortable after exercise, it is best to arrange an assessment as soon as possible. Early diagnosis can help prevent ongoing strain on the joint and allow the most suitable treatment plan to be discussed sooner.

Even if surgery is not needed immediately, getting clear advice early can make a real difference to your dog’s comfort and recovery.