title: [Measurements of parameters of posteroanterior X-ray films of distal radial fracture and their significance].
abstract: OBJECTIVE
  To provide the basic knowledge of wrist joint for diagnosing of these morphological change in pathological condition by measuring the posteroanterior X-ray films of different types of distal radius fracture by AO classification.
  
  
  METHODS
  Eleven radiographic indexes were measured including following 7 new parameters of 83 cases of distal radius fracture: ulnar styloid length (USL), ulnar head length (UHL), ulnar head diameter (UHD), maximal distal radius width (MDRW), proximal distal radius width (PDRW), sigmoid notch length (SNL) and sigmoid notch width (SNW) by Pacs system in standard X-ray films. The indexes were defined by the ratio of these parameters to the length of the third metacarpal. Statistical significance of indexes and correlations of parameters were analyzed by SPSS 16.0.
  
  
  RESULTS
  It was found that indexes of 11 parameters and 27 pairs of indexes had significantly different. Compared the indexes of 14 groups with normal group existed statistical significance, 62 pairs value of 11 parameters had correlations.
  
  
  CONCLUSIONS
  The study provides additional radiographic index that will be helpful to more careful diagnosis and treatment of the distal radius fractures and their associated injuries such as ulnar wrist injuries or carpal instability.
authors.affiliation: Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China.
authors.forename: Gu-heng
authors.initials: GH
authors.lastname: Wang
authors.forename: Jin-bo
authors.initials: JB
authors.lastname: Tang
authors.forename: Ren-guo
authors.initials: RG
authors.lastname: Xie
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D011884:Radius / Q000000981:diagnostic imaging; D011885:Radius Fractures / Q000000981:diagnostic imaging*; D014955:Wrist Joint / Q000000981:diagnostic imaging*; D055815:Young Adult