title: MR imaging in suspected acute trauma of wrist bones.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the findings of MR imaging compared to plain radiography in acute wrist trauma.
  
  
  METHODS
  Radiography and MR imaging (obtained at 1.5 T) of 67 patients (38 female, 29 male, aged 15-80 years) were analysed by three senior radiologists in a blinded random fashion.
  
  
  RESULTS
  One-third (n= 13) of the 37 fractures observed on MR images were missed on the radiographs. The McNemar test indicated significant differences in diagnoses between radiography and MR.
  
  
  CONCLUSIONS
  We recommend that MR imaging should be considered in the diagnosis of acute wrist trauma when: 1) There is a clear discrepancy between the clinical status and a negative radiography and when splint treatment would increase cost by causing occupational restrictions; and 2) Healing of trauma diagnosed as contusion or distension does not occur within the expected time.
authors.affiliation: Department of Radiology, Helsinki University Central Hospital, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Lohman
authors.forename: A
authors.initials: A
authors.lastname: Kivisaari
authors.forename: T
authors.initials: T
authors.lastname: Vehmas
authors.forename: J
authors.initials: J
authors.lastname: Kinnunen
authors.forename: E
authors.initials: E
authors.lastname: Karaharju
authors.forename: J P
authors.initials: JP
authors.lastname: Kaukonen
authors.forename: L
authors.initials: L
authors.lastname: Kivisaari
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016009:Chi-Square Distribution; D005260:Female; D050723:Fractures, Bone / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014954:Wrist Injuries / Q000175:diagnosis* / Q000000981:diagnostic imaging