Orthopaedics – MCQ 12 – Pigmented villonodular synovitis

Pigmented villonodular synovitis most commonly affects :
a) Shoulder
b) Ankle
c) Knee
d) Metatarsophalangeal joint

Correct answer : c) Knee

It is a benign condition characterised by exuberant proliferation of synovial tissue. It affects synovial joints, tendon sheaths and bursae.