Tendon subluxation after de Quervain's release: treatment by brachioradialis tendon flap.

Volar subluxation of the tendons of the first dorsal compartment of the wrist occurred in two patients after surgery for treatment of de Quervain's stenosing tenosynovitis. In both patients a painful tenosynovitis of the extensor pollicis brevis and abductor pollicis longus developed, which was unresponsive to conservative therapy as the tendons prolapsed over the prominence of the first dorsal compartment. A distally based flap of the brachioradialis tendon was used to prevent tendon prolapse, with both patients asymptomatic and free of subluxation one and five years after operation.