Sulcus-Deepening Trochleoplasty for the Treatment of Recurrent Patellar Dislocation with High-Grade Trochlear Dysplasia

Abstract

Trochlear dysplasia is a developmental condition where the femoral trochlea loses its normal concave shape to an abnormal flat or even convex geometry [1, 2]. It has been identified as the most consistent anatomic factor present in patients with recurrent patellar dislocation [3, 4]. For its treatment, various surgical procedures have been published and proposed to reshape the abnormal trochlea [5]. Trochleoplasty procedures involve a certain amount of technical difficulty [6], and they were initially reserved as salvage options [2]. Deepening trochleoplasty procedures are a relatively rare option in the surgical treatment of recurrent patellar dislocation [5]. But recent literature contains studies with encouraging results on the treatment of patients with patellar dislocation due to high-grade trochlear dysplasia [7–18].