title: Vertical locking of the metacarpophalangeal joint in young adults.
abstract: Locking of the metacarpophalangeal joints has been occasionally reported in older adults, but reports of this problem are rare in younger individuals. We report 8 young adult patients with a metacarpophalangeal joint locked in 90° flexion after minor trauma. The cases included 6 little fingers and 2 thumbs in 1 male and 7 female patients aged 16 to 39 years. All were easily reduced closed. We postulate the mechanism of injury.
authors.affiliation: Department of Emergency and Critical Care Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan. tajima@2001.jukuin.keio.ac.jp
authors.forename: Kosuke
authors.initials: K
authors.lastname: Tajima
authors.forename: Kazuki
authors.initials: K
authors.lastname: Sato
authors.forename: Takashi
authors.initials: T
authors.lastname: Sasaki
authors.forename: Clayton A
authors.initials: CA
authors.lastname: Peimer
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005383:Finger Injuries / Q000503:physiopathology; D006801:Humans; D004204:Joint Dislocations / Q000503:physiopathology* / Q000628:therapy*; D008297:Male; D008349:Manipulation, Orthopedic; D008662:Metacarpophalangeal Joint / Q000503:physiopathology*; D016059:Range of Motion, Articular / Q000502:physiology*; D014143:Traction; D055815:Young Adult