In-vivo three-dimensional carpal bone kinematics during flexion-extension and radio-ulnar deviation of the wrist: Dynamic motion versus step-wise static wrist positions
In-vivo three-dimensional carpal bone kinematics during flexion-extension and radio-ulnar deviation of the wrist: Dynamic motion versus step-wise static wrist positions
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DOI：
10.1016/j.jbiomech.2009.08.016
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发表时间：
2009-12-11
影响因子：
2.4
通讯作者：
Streekstra, G. J.
中科院分区：
文献类型：
--
作者：
Foumani, M.;Strackee, S. D.;Streekstra, G. J.
测量手腕腕骨三维运动模式的体内方法可能具有未来的诊断应用，特别是对于手腕韧带损伤。体内测量腕骨运动学的静态方法仅提供腕骨真实运动学的近似值。本研究旨在找出动态和静态获得的腕骨运动学之间的差异。对于八名健康受试者，对屈伸和桡尺偏斜运动进行腕骨运动学的静态和动态测量。在施加的循环运动期间使用四维 X 射线成像系统获得动态扫描。为了评估手腕的静态运动学，在逐步屈曲-伸展和桡尺偏斜期间采集了三维旋转 X 射线扫描。螺旋轴旋转和旋转分量。即屈曲-伸展、桡尺偏斜和旋后是主要参数。使用线性混合模型统计分析来确定腕骨动态和静态获得的旋转之间差异的显着性。在腕骨的动态运动和逐步静态运动之间观察到微小且在大多数情况下可忽略不计的差异。结论是，对于没有任何腕部病变的个体，可以动态或静态地研究腕骨运动学。需要进一步的研究来调查患有动态手腕问题的患者的动态体内腕骨运动学。 (C) 2009 Elsevier Ltd. 保留所有权利。
An in-vivo approach to the measurement of three-dimensional motion patterns of carpal bones in the wrist may have future diagnostic applications, particularly for ligament injuries of the wrist. Static methods to measure carpal kinematics in-vivo only provide an approximation of the true kinematics of the carpal bones. This Study is aimed at finding the difference between dynamically and statically acquired carpal kinematics.For eight healthy subjects, static and a dynamic measurements of the carpal kinematics were performed for a flexion-extension and a radio-ulnar deviation movement. Dynamic scans were acquired by using a four-dimensional X-ray imaging system during an imposed cyclic motion. To assess static kinematics of the wrists, three-dimensional rotational X-ray scans were acquired during step-wise flexion-extension and radio-ulnar deviation. The helical axis rotations and the rotation components. i.e. flexion-extension, radio-ulnar deviation and pro-supination were the primary parameters. Linear mixed model statistical analysis was used to determine the significance of the difference between the dynamically and statically acquired rotations of the carpal bones.Small and in most cases negligible differences were observed between the dynamic motion and the step-wise static motion of the carpal bones. The conclusion is that in the case of individuals without any pathology of the wrist, carpal kinematics can be studied either dynamically or statically. Further research is required to investigate the dynamic in-vivo carpal kinematics in patients with dynamic wrist problems. (C) 2009 Elsevier Ltd. All rights reserved.