title: Hyperextension injuries of the MP joint of the thumb.
abstract: We report 26 cases of hyperextension injury of the MP joint of the thumb. These were classified into the following three categories; dorsal dislocation of the MP joint or volar plate avulsion; locking of the MP joint and fracture of the sesamoid bone. We report the pathomechanics and clinical features of these injuries.
authors.affiliation: Department of Orthopaedic Surgery, Tsuchiura Kyodo Hospital, Ibaraki, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ishizuki
authors.forename: T
authors.initials: T
authors.lastname: Nakagawa
authors.forename: S
authors.initials: S
authors.lastname: Ito
mesh_terms: D000293:Adolescent; D000328:Adult; D017885:Collateral Ligaments / Q000293:injuries / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D050723:Fractures, Bone / Q000209:etiology; D006801:Humans; D004204:Joint Dislocations / Q000145:classification / Q000209:etiology* / Q000473:pathology; D008297:Male; D008662:Metacarpophalangeal Joint / Q000293:injuries* / Q000473:pathology; D016059:Range of Motion, Articular; D012716:Sesamoid Bones / Q000293:injuries; D013933:Thumb / Q000293:injuries* / Q000473:pathology