Medial patellar subluxation (MPS) is an often unrecognized cause of instability and easily mistaken for lateral subluxation. MPS occurs as the patella rotates up on side a longitudinal axis due to laxity retinaculum in extension. This can occur naturally or after release. In addition, medial femoral trochlea undeveloped shallow early flexion, thus not providing bony support resist combination f...

PURPOSE Anterior cruciate ligament injuries and patellofemoral pain syndrome are both common and significant injuries to the knee that have been associated with hip weakness. Prospective studies have linked the risk of experiencing either injury to alterations in the frontal plane knee angle and moment during activity. These components of knee mechanics are theorized to be affected by hip abduc...