Radiographic measurements of the normal distal radius: reliability of computer-aided CT versus physicians’ radiograph interpretation

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We examined the reliability of a computer-aided cone-beam CT analysis of radiographic parameters of 50 normal distal radii and compared it with interobserver agreement of measurements made by three groups of physicians on two-dimensional plain radiographs. The intra-rater reliability of the computer-aided analysis was evaluated on 33 wrists imaged twice by cone-beam CT. The longitudinal axis, anterior tilt, radial inclination and ulnar variance were measured. The reliability of computer-aided analysis was excellent (intraclass correlation coefficient (ICC) 0.94-0.96) while the interobserver agreement of two-dimensional radiograph interpretation was good (ulnar variance, ICC 0.80-0.84) to poor (anterior tilt and radial inclination, ICC 0.20-0.42). We conclude that computer-aided cone-beam CT analysis was a reliable tool for radiographic parameter determination, whereas physicians demonstrated substantial variability especially in interpreting the angular parameters.

Original languageEnglish
JournalJournal of Hand Surgery (European Volume)
Issue number2
Pages (from-to)176-183
Number of pages8
Publication statusPublished - Feb 2021
MoE publication typeA1 Journal article-refereed

Fields of Science

  • Radius
  • computer-aided analysis
  • cone-beam computed tomography
  • distal radius fracture
  • radiographic parameters
  • three-dimensional analysis
  • 3126 Surgery, anesthesiology, intensive care, radiology

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