Plica syndrome

Plica syndrome occurs when bands of tissue in the knee called plicae swell from overuse or injury. Treatments for this syndrome are: ...

Pinching of the inner lining of the knee with knee motion (synovial impingement, or plica syndrome)
Poor alignment of the patellofemoral joint (where the kneecap rubs against the lower portion of the thigh bone) ...

Thickening or folding of the knee ligaments (Plica syndrome).
Pain in the front of the knee from overuse, injury, excess weight, or problems in the kneecap (patellofemoral pain syndrome Opens New Window).

Arthritis
Cartilage injury
Dislocation of the patella, which means the kneecap has been pulled out of place
Fracture of the kneecap
Pinching of the inner lining of the knee with knee movement (synovial impingement, or plica syndrome) ...

See also: Injury, Surgery, Arthritis, Chondromalacia, Chondroma