Three-dimensional carpal kinematics in vivo
Three-dimensional carpal kinematics in vivo
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DOI：
10.1016/s0268-0033(02)00038-4
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发表时间：
2002-08-01
影响因子：
1.8
通讯作者：
Bos, KE
中科院分区：
文献类型：
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作者：
Moojen, TM;Snel, JG;Bos, KE
Objective.本研究的目的是准确量化所有腕骨在屈曲和伸展以及桡尺偏的三维体内运动学。对11名健康志愿者右手腕部进行螺旋CT扫描，尺桡偏位时旋转增量为50 °，其中5名同时进行屈伸运动。使用一次常规剂量扫描，随后在手腕运动期间使用常规剂量的十分之一进行扫描。开发了一种使用骨骼内部结构的三维匹配技术，可以非常准确地追踪腕骨的相对平移和旋转。结果。我们的大多数结果与先前发表的体外数据一致。除其他外，我们可以证实舟状骨的运动模式不止一种。此外，我们可以准确地描述小的适应性腕骨间运动在体内的远端腕行。据我们所知，这是第一次所有八个腕骨的三维体内运动学被准确和非侵入性地量化。
Objective. The purpose of this study was to accurately quantify three-dimensional in vivo kinematics of all carpal bones in flexion and extension and radial and ulnar deviation.Design and methods. The right wrists of 11 healthy volunteers were imaged by spiral CT with rotational increments of 5degrees during ulnar-radial deviation and of five of them also during flexion-extension motion. One regular-dose scan was used and the subsequent scans during wrist motion were performed with one-tenth of the regular dose. A three-dimensional matching technique using the internal structure of the bones was developed to trace the relative translations and rotations of the carpal bones very accurately.Results. Most of our results are in concordance with previously published in vitro data. We could, among others, substantiate proof to the statement that there is more than one kinematic pattern of the scaphoid. Furthermore, we could accurately describe small adaptive intercarpal motions in vivo of the distal carpal row.Conclusions. To our knowledge, this is the first time the three-dimensional in vivo kinematics of all eight carpal bones is quantified accurately and non-invasively.