Behind-the-knee pain could be due to muscle strain or arthritis—or something far more serious. Orthopedic experts say these ...

Some of the most common symptoms of PFPS include ... and softening of the cartilage on the underside of the patella (kneecap). Pain occurs when the thigh bone and kneecap rub together.

Knee pain is a common predicament that affects people of all ages. Most types of minor knee pain respond well to self-care, ...

In more extreme situations, a specific surgical procedure may be needed to help relieve the pain. If the cartilage under the soccer player's kneecap is fragmented and causing mechanical symptoms ...