TTA cruciate surgey
TTA cruciate surgery (Tibial Tuberosity Advancement)
Unfortunately modern pet dogs frequently rupture the cranial cruciate ligament inside their knees. This results in an unstable knee joint which leads to arthritic pain and inflammation.
Dogs walk on their tippy toes so their knee is on a slope putting the cruciate ligament under constant stress unlike our nice flat knees. Combining this with an underlying degenerative condition in their cruciate ligament means it is a common disease that often goes on to affect both knee joints in susceptible dogs.
Most dogs will benefit from having the damaged knee stabilised. This can be achieved with an implant surgically placed across the joint to mimic the broken ligament. This is called an extracapsular repair. The implant is under constant stress like the original cruciate ligament and can fail.
Why TTA ?
In boisterous, medium to large dogs the extracapsular repair can break or stretch, producing less than ideal outcomes in some cases. For this reason procedures have been developed to neutralise the slope of the knee which effectively removes the need for the cruciate ligament.
The two techniques with the most time in use, the most studies, similar outcomes and used by specialist centres the world over are the TPLO and TTA procedures. Both procedures require bone cutting but the TTA technique only involves the front edge of the tibial bone to be cut. This means it is less invasive, with less risk of serious complications and is therefore a good choice for a general practice to perform. We are one of the few Veterinary Hospitals able to offer this service for dogs under our care. Our experience with the technique has been very favourable with a faster recovery to function with patients having less swelling and lameness post operatively than with the extracapsular technique.