People with patellofemoral instability have a sensation of the patella, or the kneecap, slipping away or feeling loose on the movement of the knee. In some cases, the patella dislocates from the knee. In either case, there may be swelling and a feeling of pain in the front of the knee.

The instability may be caused by over-flexible ligaments around the knee or structural abnormalities, such as the patella being too high within the knee joint.

Several non-surgical treatments are available, including bracing, physical therapy and/or taping. We may also recommend arthroscopic surgery when necessary.

Learn more about patellofemoral instability in our Patient Education Library.