Patellar tendonitis — also called jumper’s knee — is a type of knee tendon pain. It happens when the tendons connecting the kneecap to the shinbone become inflamed from overuse. Repetitive motions, ...

Patellar tendonitis is a common injury or inflammation of the tendon that connects your kneecap (patella) to your shinbone (tibia). Your pain may be mild or severe. Anyone can get patellar tendonitis.

There are many different causes for knee pain when bending the leg. The location of pain and other symptoms can help differentiate possible causes, such as tendonitis, strains, or arthritis. The type ...