Patellar tendinitis, or "jumper's knee," is another condition that may cause pain under or below your kneecap. Wearing the wrong shoe for your foot shape and stride can also cause knee pain or ...

Chondromalacia patella is damaged or softened cartilage underneath the kneecap (patella). This condition typically occurs from playing sports that irritate the kneecap due to long-term overuse or ...

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 ...