Medically reviewed by Amy Kwan, PT Causes of knee pain when running can range from patellofemoral pain syndrome (PFPS), or ...

Chondromalacia patella is damaged or softened cartilage underneath the kneecap (patella). This condition typically occurs ...

This pain may be caused by soft cartilage under the kneecap (patella), referred pain from another area such as the back or hip, or soft tissues around the front of the knee. Among soccer players ...