title: Trans-triquetral dorsal perilunate fracture dislocation.
abstract: A rare case of trans-triquetral dorsal perilunate dislocation is described. It differs from the Mayfield and Johnson theory of progressive perilunar instability in greater arc injuries which states that the injury passes from the radial to the ulnar carpal bones and soft tissues in stages. This injury supports the concept of a reverse greater arc injury from ulnar to radial being possible with the radial carpal bones being spared in some cases.
authors.affiliation: Orthopaedics and Traumatology Department, Yan Chai Hospital, Tsuen Wan, China. drleungyf@gmail.com
authors.forename: Y F
authors.initials: YF
authors.lastname: Leung
authors.forename: S P S
authors.initials: SP
authors.lastname: Ip
authors.forename: A
authors.initials: A
authors.lastname: Wong
authors.forename: W Y
authors.initials: WY
authors.lastname: Ip
mesh_terms: D000328:Adult; D001864:Bone Wires; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal; D017102:Fracture Healing / Q000502:physiology; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000601:surgery*; D012667:Lunate Bone / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011859:Radiography; D016059:Range of Motion, Articular; D051221:Triquetrum Bone / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D014954:Wrist Injuries / Q000000981:diagnostic imaging / Q000601:surgery*