Congenital Unilateral Lateral Patellar Luxation in a Simmental Calf

Abstract

In this case report, the surgical treatment of a calf with congenital, unilateral lateral patellar luxation with clinical, ra diography, and computed tomography findings is presented. A 5-day-old calf was referred due to an extremely flexed knee joint with extremity weakness. Orthopaedic, radiographic, and computed tomographic examination demonstrated a grade 3 unilateral lateral patellar luxation with normal stifle bone anatomy. Surgery includes lateral release with medial imbrication of the medial retinaculum and resulted in the repositioning of the patella. After the surgery, the limb was immobilized for ten days with splint bandage. The calf became a normal stance and gait following six weeks after the surgery. In this case, it was concluded that the imaging methods of the patellar luxations that can be observed naturally in calves facilitate the diagnosis and can be successfully treated with lateral release and medial imbr ication compared to many methods mentioned in the literature.