The patella (kneecap) is located at the front of your knee and articulates with the femur (thighbone). The patella connects muscles in front of the femur to the tibia and protects the knee. The patella sits in a groove in the femur that is called the trochlear groove. The underside of the patella and trochlear groove are covered with articular cartilage; this cartilage allows smooth movement of the patellofemoral joint. Patellofemoral overload syndrome, also known as patellofemoral pain syndrome (PFPS), is commonly called “runner’s knee” or “jumper’s knee,”. Patellofemoral overload is more commonly seen in women and can affect one or both knees. Contributing factors may be muscle imbalance, sudden changes in exercise intensity and regimens, the wearing of high heels, or excessive hiking and stairclimbing. Patellofemoral overload syndrome is marked by pain at the front of the knee around the patella. The pain is more distinguishable during exercises such as running, jumping, when walking up or down stairs or when squatting. PFPS can be caused by overuse or by an injury. PFPS can lead to further injuries such as patellofemoral cartilage injury. Dr. Riley J. Williams, orthopedic knee specialist serving Manhattan, New York City and the surrounding New York boroughs has extensive experience in patellofemoral overload syndrome, patellofemoral cartilage injury and other knee joint related conditions.