title: Locking of the metacarpophalangeal joint of the thumb by a loose body: a case report.
abstract: We report a case with locking of the metacarpophalangeal (MP) joint of the thumb in a 15-year-old high school baseball catcher, which was caused by an intra-articular loose body arising from osteochondritis dissecans. The loose body was removed arthroscopically, enabling early return to full MP joint function.
authors.affiliation: Department of Orthopaedic Surgery, Tokai University Oiso Hospital, Kanagawa, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Ueda
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Ikeda
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Oka
mesh_terms: D000293:Adolescent; D000844:Ankylosis / Q000209:etiology*; D006801:Humans; D007594:Joint Loose Bodies / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008297:Male; D008662:Metacarpophalangeal Joint