The Kneecap (patella) forms part of the patellofemoral compartment of the knee.
The patella is a relatively small, mobile bone which is subject to large forces in everyday activity such as arising from a chair and climbing or descending steps/ stairs. Kneecap (patellofemoral) pain is the most common knee problem. Patellofemoral pain affects a wide age range from early adolescence to older age. Unfortunately, the cause of the pain is often uncertain and therefore it is difficult too treat or 'cure'.