title: Posttraumatic recurrent dislocation of extensor pollicis brevis tendon over the metacarpophalangeal joint.
abstract: There have been numerous reports on dislocation of the extensor tendons in the fingers. We describe an acquired dislocation of the extensor tendons of the thumb. We report a case with posttraumatic dislocation of extensor pollicis brevis (EPB) over the metacarpophalangeal (MCP) joint of the thumb. Ulnar dislocation of the EPB took place during a firm grip on a badminton racket and the patient could not extend the thumb from this position. After reconstruction of the extensor aponeurosis to centralize the EPB tendon the patient recovered normal function of thumb extensors.
authors.affiliation: Department of Orthopaedic Surgery, Shiga University of Medical Science, Setatsukinowa-cho, Otsu-shi, Shiga-ken 520-0192, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Imai
authors.forename: Katsuhisa
authors.initials: K
authors.lastname: Kikuchi
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Matsusue
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis* / Q000601:surgery; D008662:Metacarpophalangeal Joint / Q000293:injuries*; D012008:Recurrence; D013708:Tendon Injuries / Q000175:diagnosis* / Q000601:surgery; D013710:Tendons / Q000601:surgery; D013933:Thumb / Q000293:injuries / Q000601:surgery