Patellofemoral Pain Syndrome is a common cause of pain around the knee cap. When the knee bends or straightens, the knee cap (patella) glides in a special groove on the femur / thigh bone called the 'Patellofemoral groove', controlled by the quadriceps (thigh) muscles. The patella can stray from this path (usually towards the outside of the knee) due to tight quadriceps or muscle spasm or biomechanical problems from over pronation of the foot (flat foot). This produces abnormal stresses on the under-surface of the patella that can cause knee cap pain.
Signs & Symptoms