Subluxation is another word for partial dislocation of a bone. Patellar subluxation is a partial dislocation of the kneecap (patella). It’s also known as patellar instability or kneecap instability.

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.

Germany goalkeeper Marc-André ter Stegen sustained a torn patellar tendon on the weekend. DW fills you in on how serious an injury it is, how it is treated, and how long it could take for him to ...