Pigmented Villonodular synovitis most commonly involves?: (A) Shoulder, (B) Knee, (C) Hip, (D) Ankle
Answer is B. Pigmented villonodular synovitis (PVNS) is a benign proliferative condition affecting synol membranes of joints, bursae or tendons resulting from synol proliferation with villous and nodular projections and haemosiderin deposition. PVNS is most commonly mono aicular mainly involving Knee joint