Proximal Femur Rotational Osteotomy Todd J. Frush INTRODUCTION Pathogenesis The lateral displacement forces upon the patella increase with inward twisting of the knee. These forces may cause patellofemoral (PF) ligament…
Patellar Fracture After Medial Patellofemoral Ligament Reconstruction Robin V. West Shital N. Parikh INTRODUCTION Pathogenesis A major complication after medial patellofemoral ligament (MPFL) reconstruction is an iatrogenic patellar fracture. In…
Overmedialization Following Tibial Tuberosity Osteotomy Jack Andrish INTRODUCTION Tibial tuberosity osteotomy is a commonly employed surgical technique for the treatment of patellar instability and/or anterior knee pain associated with patellar…
Complications of Medial Patellofemoral Ligament Reconstruction Peters T. Otlans Beth E. Shubin Stein Jacqueline M. Brady INTRODUCTION Medial patellofemoral ligament (MPFL) reconstruction is commonly used to treat patellofemoral instability by…
Distal Femur Rotational Osteotomy Steffen Schröter INTRODUCTION Pathogenesis Several risk factors influence the pathology of patellar instability/dislocation. Besides the widely known risk factors regarding the soft-tissue structures around the knee,…
Why Osteotomy for Patellar Instability? Robert A. Teitge INTRODUCTION All cases of patellar instability, dislocation or subluxation, and most of patellofemoral pathologies result from of an excess of force being…
Implant-Free Medial Patellofemoral Ligament Reconstruction Using Soft-Tissue Fixation Shital N. Parikh INTRODUCTION Pathogenesis/Historical Perspective The medial patellofemoral ligament (MPFL) has been identified as the primary medial restraint for lateral patellar…
Quadricepsplasty for Congenital Dislocation of The Patella and Patellar Tendon Shortening for Patella Alta Jack Andrish QUADRICEPSPLASTY Pathogenesis Congenital dislocation of the patella may be classified as obligatory or fixed.1…
Chondral Lesions and Patellar Instability Tan Si Heng Sharon Hui James Hoi Po INTRODUCTION Pathogenesis Patellar instability is the leading cause of cartilage damage in physically active children and adolescents,…
Open Proximal Trochleoplasty (Grooveplasty) Betina B. Hinckel Andreas H. Gomoll Elizabeth A. Arendt INTRODUCTION Pathogenesis Lateral patellar dislocation is an important cause of knee injuries with associated hemarthrosis, especially in…
