title: [Comparison of regional distribution of cancellous bone in osteoporotic and non-osteoporotic distal radii].
abstract: BACKGROUND
  In cases of distal radius fractures information about the regional distribution of cancellous bone is essential for adequate fixation of osteosynthesis material.
  
  
  METHODS
  Using quantitative computed tomography (qCT) measurements 12 distal radii were divided into 2 groups (good and bad bone quality). High-resolution CT scans were obtained at 13 locations (1-40 mm distant from radial styloid processes). The resulting cross-sections were divided into 4 quadrants and the cancellous bone density was assessed in each of them.
  
  
  RESULTS
  In both groups regional cancellous bone density was highest immediately beneath the joint surface and decreased towards the metaphyseal region. Comparing the radial with the ulnar quadrants significant differences were found between distances of 4 mm and 12 mm from the joint surface in both groups. The comparison of the palmar and the dorsal quadrants resulted in an almost identical cancellous bone distribution.
  
  
  CONCLUSIONS
  In osteoporotic distal radii cancellous bone density decrease occurs homogeneously in all regions and is least pronounced beneath the joint surface. Comparing the regional cancellous bone density (radial versus ulnar and palmar versus dorsal) significant differences were mainly found near the joint surface in both groups.
authors: AO Research Institute, AO Foundation, Davos. volker.braunstein@med.uni-muenchen.de
authors: V
authors: V
authors: Braunstein
authors: S
authors: S
authors: Duda
authors: C M
authors: CM
authors: Sprecher
authors: V
authors: V
authors: Brighenti
authors: R
authors: R
authors: Arora
authors: A
authors: A
authors: Tami
authors: M
authors: M
authors: Lutz
authors: S
authors: S
authors: Milz
mesh_terms: D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000000981:diagnostic imaging*; D011884:Radius / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed