Dog cruciate ligament surgery

One of the common causes of a lame dog, just as in humans, is a cruciate ligament injury. Sydney Animal Hospitals uses the most advanced techniques for all surgeries. For larger or more active dogs we recommend a procedure known as a Triple Tibial Osteotomy or TTO.

An operation to stablise the joint and make the failed ligament obsolete

This operation is based on biomechanical analysis of a dog’s knee joint as shown in the radiograph below (Pre-op X-ray), by Dr Warrick Bruce, who reasoned that rather than doing one or the other of two previously well accepted techniques, there is merit in doing a little of both to achieve the same outcome, but with less radical angular changes.

The operation, TTO, requires three cuts to the bone – shown in Diagram 1 in red below – to create a small closing wedge osteotomy, this simultaneously advances the tibial crest, as shown by the green arrows.

The effect of this change is to stabilise the joint both at rest and while in motion. The changes to the bone are held in place with a custom moulded plate as seen in the model in Diagram 2.

Pre op Radiographs

Diagram 1 and Diagram 2

See the video below for a fuller explanation of treatment for a cruciate ligament repair from Dr. Sam Haynes of Sydney Animal Hospitals.

Pre-operative patient assessment

Every patient is assessed for the degree of lameness, overall alignment of the limb, stifle range of movement, as well as the degree of stability within the joint.

This includes taking radiographs (shown below) from which a number of important calculations are made to determine how the operation should proceed.

See video for a more detailed explanation of pre-operative patient assessment.

The Triple Tibial Osteotomy operation

Your pet is anesthetised and analgesics (pain killers) are administered to ensure he or she suffers no discomfort during the complex operation and post-operative recovery period.

Your dog will stay in hospital overnight and receive continuing pain relief during this period. The next morning your pet will be assessed and plans will be made for them to go home with a course of antibiotics and anti-inflammatory pain medications.

Post-operative analysis for cruciate ligament repair

Post-operative X-rays are taken following the operation to check the plate position and correction angles with calculations being made to ensure that a good result has been achieved.

To discuss why your dog may be experiencing lameness, please call one of our friendly Vets at Sydney Animal Hospitals.

Our Locations

Office Hours

Newtown Sydney Animal Hospitals

Monday - Sunday 7am - 11pm

Phone:(02) 9519 4111

Inner West Sydney Animal Hospitals

Monday - Friday 7am - 8pm
Saturday - Sunday 8am - 6pm

Phone:(02) 9516 1466

Kellyville Sydney Animal Hospitals

Monday - Friday 7am - 9pm
Saturday - Sunday 8am - 6pm

Phone:(02) 8883 0533

Norwest Sydney Animal Hospitals

Monday - Sunday 7am - 11pm

Phone:(02) 8883 0411

Northern Beaches Newport Sydney Animal Hospitals

Monday - Sunday 7am - 9pm

Phone:(02) 9997 4609

Avalon Sydney Animal Hospitals

Monday - Friday 8am - 7pm
Saturday 8:30am - 4pm
Sunday - 9am - 4pm

Phone:(02) 9918 0833


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