It can also weaken the articular cartilage covering the end of the femur and the underside of the patella. Over time ... dull, burning). After palpation (light touching) of the knee to check for ...

Adjei, MD Patellofemoral stress syndrome (PFSS), also known as "runner's knee" or "jumper's knee," is a type of overuse injury that causes pain in the soft tissues and bone in the front of the knee.