Dr. Stephen H. Levine is an ACVS board-certified veterinary surgeon and owner of Veterinary Surgical Specialists, a small-animal surgery specialty practice serving the Minneapolis/St. Paul area of Minnesota.
In the first article in this series, we provided a brief overview of the two surgical procedures that addressed the active, abnormal biomechanics of the cranial cruciate ligament deficient stifle—Tibial Tuberosity Advancement and Tibial Plateau Leveling Osteotomy.
The Tibial Tuberosity Advancement (TTA) is a procedure developed in Zurich, Switzerland, in the early 2000s. The biomechanics behind its success for correcting cranial cruciate ligament-deficient stifles is a change in the patellar tendon angle that effectively neutralizes the tibiofemoral shear (tibial thrust) that occurs during weight bearing.