Femoral corrective osteotomy associated with trochlear prosthetics and tibial tuberosity transposition with a tool for treatment of canine patellar dislocation

Abstract

Patellar dislocation is one of the main osteoarticular diseases described in the surgical routine of pet animals, the treatment of which differs according to the degree of dislocation based on the clinical changes presented by each patient. The present report aims to describe the association of the femoral corrective osteotomy technique, total trochlear replacement of the knee by prosthetics, and tibial tuberosity transposition with a tool for correction of grade IV patellar dislocation in a 1.5-year-old German Spitz dog with femoral varus deviation and external tibial torsion. The treatment allowed the correction of femoral bone deformation, realignment of the quadriceps extensor mechanism, and permanent maintenance of the patella on the prosthetic trochlear sulcus with early functional return of the limb, absence of pain, and lameness.