Pigmented villonodular synovitis in the first metatarsophalangeal joint: arthroscopic treatment of an unusual condition.

Pigmented nodular synovitis is an uncommon condition of the foot. In this case history, we report a case of pigmented nodular synovitis in the first metatarsophalangeal joint, treated by arthroscopic synovectomy. Pigmented nodular synovitis to our knowledge has not been described in the first metatarsophalangeal joint. We report successful treatment of the condition by arthroscopic removal of the tissue, with the patient being asymptomatic 2 years after surgery.