It's commonly known as runner's knee, but you don't have to run to feel the pain of patellofemoral syndrome (PFPS). This condition occurs often in young athletes and female athletes especially.
Patellofemoral pain syndrome (PFPS) is a common cause of knee pain. It happens when the area at the front of the knee, behind the kneecap, becomes overloaded. Share on Pinterest FreshSplash/Getty ...