title: Morphology of distal radius curvatures: a CT-based study on the Malaysian Malay population.
abstract: BACKGROUND
  The purpose of this study was to examine the differing curves of the volar distal radius of healthy Malaysian Malays, so as to obtain detailed morphological information that will further the understanding of volar plate osteosynthesis in Malaysian Malays.
  
  
  METHODS
  Computed tomography with three-dimensional reconstruction was performed on the wrists of 16 healthy Malaysian Malay volunteers. Profile measurements were made using a software program. A novel parameter, the pronator quadratus curve angle, was explored and introduced in this study. Interclass correlation coefficients were calculated to assess the level of agreement between the data collected by the principal investigator and that collected by an independent radiologist.
  
  
  RESULTS
  The mean ± standard deviation of the arc radii on the radial aspect was 17.50° ± 5.40°, while the median (interquartile range [IQR]) of the arc radii on the ulnar aspect was 25.27° (IQR 5.80°). The mean ± standard deviation of the curvature of the pronator quadratus line was 40.52° ± 2.48°. The arc radii on the radial aspect was significantly lower than the arc radii on the ulnar aspect (p = 0.001). Different radial and ulnar arcs were observed in 56.25% of the radii; the arc was deeper on the ulnar aspect in 93.75% of the radii.
  
  
  CONCLUSIONS
  Based on the findings of this study, the likelihood of achieving anatomical reduction with uniformly curved, fixed-angle volar plates is questionable. Changes in the design of these implants may be needed to optimise their usage in the Malaysian Malay population.
authors: Department of Orthopaedics, Universiti Sains Malaysia, Kelantan, Malaysia.
authors: Taran Singh Pall
authors: TS
authors: Singh
authors: Department of Orthopaedics, Universiti Sains Malaysia, Kelantan, Malaysia.
authors: Abdul Nawfar
authors: AN
authors: Sadagatullah
authors: Department of Orthopaedics, Universiti Sains Malaysia, Kelantan, Malaysia.
authors: Abdul Halim
authors: AH
authors: Yusof
mesh_terms: D000328:Adult; D001860:Bone Plates; D003430:Cross-Sectional Studies; D005260:Female; D005593:Fracture Fixation, Internal; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008296:Malaysia; D008297:Male; D011884:Radius / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D011885:Radius Fractures / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D012984:Software; D014057:Tomography, X-Ray Computed; D014457:Ulna / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D055815:Young Adult
keywords: arc radii; distal radius fracture; distal radius morphology; volar plating