Arthroscopic treatment of medial shelf syndrome.

Medial shelf or "plica" syndrome is a pathological condition of the knee that often follows knee injury in young athletes, the symptoms of which often mimic other internal derangements of the knee. Its anatomy, pathomechanics, and clinical presentation along with treatments suggested in the orthopedic literature are reviewed here. Two-year follow-up studies on the treatment of this syndrome by arthroscopic resection in 51 knees in 42 patients are presented as well.