Sections DDx Anterior Knee Pain Chondromalacia Patellae PFJ osteoarthritis Fat Pad Syndrome Bipartite Patella Patella Baja Patellar tendonitis Patella Fracture Acute Patella Dislocation Recurrent Patella Dislocation Patella Tendon Rupture Quadriceps Tendon Rupture Quadricepsplasty