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KMID : 0621520120170030124
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Journal of the Korean Society for Surgery of the Hand
2012 Volume.17 No. 3 p.124 ~ p.129
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Carpal Alignment Evaluation Using Three-dimensional Computed Tomography
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Lee Gi-Won
Song Jae-Seok
Choi Young-Joon
Cho Wan-Jong
Park Ho-Youn
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Abstract
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Purpose: The purpose of this study was to analyze carpal alignment and evaluate the interobserver reliability of the several parameters using three-dimensional computed tomography (3D-CT) in normal Koreans.
Materials and Methods: The study included 42 wrists with no history of wrist pain or abnormality by physical examination. 3D-CT scanning was performed with each patient in zero position; the arm abduction against the trunk; the
elbow flexed 90°; the forearm in neutral position using the stabilizing device. The three observers measured the carpal alignment parameters including distal radius articular angle, radiolunate angle, radioscaphoid angle, radiocapitate angle, radio-3rd metacarpal angle, scapholunate angle, lunocapitate angle, luno-3rd metacarpal angle.
Results: The mean distal radius articular anglewas 12.8°±2.6°, the mean radiolunate angle was 0.9°±4.6°, the
radioscaphoid angle was 54.4°±5.3°, the mean radiocapitate angle was 1.7°±2.1°, the mean radio-3rd metacarpal angle was -1.2°±2.5°, the mean scapholunate angle was 53.4°±7.8°, the mean lunocapitate angle was 0.8°±4.7° and the mean luno-3rd metacarpal angle was -2.1°±5.0°. All parameters have excellent interobserver reliability.
Conclusion: The normal mean values and ranges of carpal alignment angles measured by using 3D-CT may be of assistance in the evaluation of carpal alignment in patients.
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KEYWORD
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Carpal alignment, Three-dimensional computed tomography
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