A demonstration of the validity of a 3-D video motion analysis method for measuring finger flexion and extension
A demonstration of the validity of a 3-D video motion analysis method for measuring finger flexion and extension
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DOI：
10.1016/s0021-9290(99)00140-2
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发表时间：
1999-12-01
影响因子：
2.4
通讯作者：
Gupta, A
中科院分区：
文献类型：
--
作者：
Rash, GS;Belliappa, PP;Gupta, A
本研究证明了使用三维视频运动分析来测量手部运动的有效性。几位研究人员发明了巧妙的方法来研究正常和异常的手部运动。尽管这些早期的研究很有帮助，但它们是动态现象的静态表现。尽管使用科学上无可挑剔的技术对手部运动进行了许多研究，但对数字运动知之甚少，并且仍然很少有研究人员研究手部的动态三维运动。将三摄像机视频运动分析系统的结果与“金标准”二维侧位透视的结果进行比较。我们用这两种方法同时记录了6名神经正常、健康的志愿者在优势手食指无限制屈伸时的手部运动。采集和后处理后，使用调整后的多重决定系数（R-a(2)或CMD）比较PIP、DIP和MCP关节角的波形。MCP、PIP和DIP关节角度波形的平均CMD值分别为0.96、0.98和0.94，表明用二维和三维方法分析的可比关节的运动非常相似。这表明三维运动分析方法能够准确地量化数字关节运动。预计3d运动分析，除了作为一种研究工具外，还将有临床应用，如神经肌肉疾病的手术计划和许多其他病理性手部异常运动的记录。1999爱思唯尔科学有限公司版权所有。
This study demonstrates the validity of using 3-D video motion analysis to measure hand motion. Several researchers have devised ingenious methods to study normal and abnormal hand movements. Although very helpful, these earlier studies are static representations of a dynamic phenomenon. Despite the many studies of hand motion using scientifically impeccable techniques, little is known about digital motion, and there are still few researchers investigating dynamic three-dimensional motion of the hand. Results from a three-camera video motion analysis system were compared to those from the "gold standard", 2-D lateral view fluoroscopy. We used these two methods to record hand motion simultaneously during unrestricted flexion and extension of the index finger of the dominant hand in 6 neurologically normal, healthy volunteers. After collection and post-processing, the waveforms of the PIP, DIP and MCP joint angles were compared using the adjusted coefficient of multiple determination (R-a(2) or CMD). The mean CMD values for the MCP, PIP and DIP joint angle waveforms were 0.96, 0.98 and 0.94, respectively, suggesting a close similarity between motion of comparable joints analyzed by the 2-D and 3-D methods. This shows that the method of 3-D motion analysis is capable of accurately quantifying digital joint motion. It is anticipated that 3-D motion analysis, in addition to being used as a research tool, will also have clinical applications such as surgical planning in neuromuscular disorders and the documentation of abnormal motion in many other pathological hand conditions. (C) 1999 Elsevier Science Ltd. All rights reserved.