[Ganglion in the discus triangularis. First description].

A fifty-four year old patient had persisting pain in the wrist following a distal radius fracture two years previously. A perforation of the discus triangularis was confirmed by arthrography, and the disc removed. Gelatinous fluid was found in the joint at operation. Histologically, a ganglion was present in the disc, close to an old tear. As far as we know, this is the first report of a disc ganglion. Disc ganglia probably occur more frequently than is recognized and could be responsible for pain, swelling and recurrent wrist ganglia.