Distal plate fracture as a novel complication following TTA surgery in two dogs

Abstract

Two Rottweilers with cranial cruciate ligament (CCL) disease were referred for evaluation and treatment. Both patients underwent radiographs and examination under sedation, which confirmed CCL disease. Arthrotomy of the affected stifles revealed a partial CCL rupture in one patient and a complete CCL rupture in the other patient. The two patients underwent tibial tuberosity advancement (TTA) for treatment. In both cases, the TTA plate broke and the patients underwent a second operation to replace the broken plate. One patient was lost to follow-up after the second operation, while the other had acceptable function of the leg. Metallurgical analysis of the explanted plate in the second patient revealed corrosion as the predominant mechanism of plate failure. Despite the inherent resistance to corrosion presented by titanium implants, it is still possible for corrosion to lead to implant failure. However, replacement of the failed implant could lead to full recovery.