What else may be causing kneecap pain?
The most common cause of kneecap pain is chondromalacia, or an irritation of the cartilage on the undersurface of the kneecap. Patellar subluxation and chondromalacia can go hand in hand, but they should be considered separate entities. That said, if chondromalacia is being caused by subluxation, then the instability of the kneecap must be addressed for treatment to be successful. Other causes of kneecap pain include osteoarthritis, patellar tendonitis (Jumper’s knee), and plica syndrome.