Christine M. Kleinert Institute for Hand and Microsurgery, Louisville, KY, USA.
Sarcoidosis is an idiopathic disease characterized by multiple noncaseating granulomatous nodules. Involvement of the hand is extremely uncommon and tenosynovitis of the hand is rare. We present a patient who developed sarcoid tenosynovitis of multiple digits involving both the flexor and extensor tendons. He also developed flexor tendon rupture, subchondral bone erosions, and multiple joint subluxations.