[True trigger wrist (a case report)].

Clicking at the wrist, in association with movements of the fingers, has been commonly but erroneously called "trigger wrist". In true trigger wrist, triggering occurs only in relation to movements of the wrist. The authors report a case of true trigger wrist in a 23-year-old professional tennis player. Triggering was caused by a "synovial mass" around partially destroyed tendons of the ECRB, ECRL, and EPL at the level of the extensor retinaculum.