title: Dorsal dislocation of the trapezoid with carpo-metacarpal dislocations: a case report and a description of the "missing carpal sign" on radiographs.
abstract: BACKGROUND
  A case report of dorsal trapezoid dislocation with index and middle carpometacarpal dislocation is described.
  
  
  OBJECTIVE
  On review of the literature, this rare injury is often misdiagnosed on presentation, with difficulty in reviewing initial radiographs being a key factor.
  
  
  METHODS
  We present our case report of trapezoid dislocation and describe the "missing carpal sign" on radiographs as an aid to suspicion of diagnosis.
  
  
  CONCLUSIONS
  Trapezoid dislocation is an often-overlooked diagnosis; we present a sign to increase suspicion of injury and hence promote further investigation.
authors.affiliation: Department of Trauma & Orthopaedics, Stepping Hill Hospital, Manchester, England.
authors.forename: Andrew
authors.initials: A
authors.lastname: Wright
authors.affiliation: Department of Trauma & Orthopaedics, University Hospital of South Manchester, Manchester, England.
authors.forename: Rowena
authors.initials: R
authors.lastname: Umaar
mesh_terms: D000293:Adolescent; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging*; D008297:Male; D008662:Metacarpophalangeal Joint / Q000293:injuries*; D011859:Radiography; D051223:Trapezoid Bone / Q000293:injuries*; D014954:Wrist Injuries / Q000000981:diagnostic imaging*
keywords: carpal; dislocation; missing; sign; trapezoid