Medial Patellofemoral Ligament Reconstruction using Semitendinosus and Gracilis Autograft with Anteromedialization of Tibial Tuberosity for Recurrent Patellar Instability: A Case Report

Abstract

Medial patellofemoral ligament reconstruction is used to treat a substantial and recurring dislocation of the knee cap. Recurrent patellar instability is common in children, teenagers and young adult. A 20-year-old female presented with a five-year history of left knee pain. The clinical examination reveals that apprehension test is positive; there is pain and muscle defensive contraction of lateral patellar dislocation with knee flexion of 20°-30°. The X-ray shows a double contour sign, crossing sign, laterally tilted patella with flattened trochlear joint surface. The patient underwent medial patellofemoral ligament reconstruction using semitendinosus and gracilis tendon autograft with anteromedialization of tibial tuberosity. The patient is able to resume normal daily activities without complaint following the operation.