Belsole R J, Hilbelink D R, Llewellyn J A, Stenzler S, Greene T L, Dale M
Department of Orthopaedic Surgery, University of South Florida, Tampa.
J Orthop Res. 1988;6(1):116-22. doi: 10.1002/jor.1100060115.
The computed carpal models from digital computed tomography (CT) data obtained in this study compare favorably to natural anatomy. A new application of algebraic analysis of this data provides mathematical markers from which to calculate the position and orientation of each carpal bone. When the origin of the spatial coordinates of a carpal bone is transferred to the centroid of the bone, the data can be treated as three-dimensional pattern vectors describing its surface. It is then possible to calculate vectors that are the principal axes of the geometry. These axes provided references that were used to calculate position and orientation of the carpal bones in three wrist specimens. Comparisons of volumes, surface areas, and sizes and proportions of five computed images of each carpal bone from two of these wrists demonstrate the reliability of the technique. The analysis of CT scans of ceramics with known boundaries allows an estimation of its accuracy. The technique is well suited to the future study of normal wrist kinematics and pathological conditions.
本研究中从数字计算机断层扫描（CT）数据获得的腕骨计算模型与自然解剖结构相比具有优势。对这些数据进行代数分析的新应用提供了数学标记，据此可计算每块腕骨的位置和方向。当腕骨空间坐标的原点转移到骨的质心时，数据可被视为描述其表面的三维模式向量。然后就有可能计算出作为几何形状主轴的向量。这些轴提供了用于计算三个腕部标本中腕骨位置和方向的参考。对其中两个腕部的每块腕骨的五张计算图像的体积、表面积、大小和比例进行比较，证明了该技术的可靠性。对具有已知边界的陶瓷进行CT扫描分析，可以估计其准确性。该技术非常适合未来对正常腕部运动学和病理状况的研究。
