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首页> 外文期刊>Gait & posture >Motion analysis of Chinese normal knees during gait based on a novel portable system
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Motion analysis of Chinese normal knees during gait based on a novel portable system

机译：基于新型便携式系统的中国正常膝盖步态运动分析

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摘要

Normative tibiofemoral data of Chinese or Asian subjects during gait is rarely reported. This study is aimed at investigating the six-degree-of-freedom (6DOF) knee kinematics of adult Chinese during gait, based on a novel portable system. Twenty-eight healthy Chinese subjects (56 knees) were studied during their treadmill gaits. A set of optical marker clusters were attached to the thighs and shanks of each subject, who was tracked by an optical joint kinematics measurement system. Knee landmarks were initially digitized with respect to the marker cluster sets to determine the local coordinate systems for calculation of 6DOF knee joint kinematics. The range of motion (ROM) in 6DOF and 5 kinematic parameters were calculated and compared between bilateral knees and genders. We discovered that knee rotations, as well as motion in proximodistal and mediolateral translations, showed similar patterns in flexion and extension. However, the anteroposterior translations did not show a clear pattern. The results of ROM in 6DOF obtained in this study are comparable with those reported in existing literature. No statistical difference was found between left and right knees either in the ROMs or in the 5 kinematic parameters. However, the ROM in the mediolateral direction during gait was found to be higher in men than women (P = 0.014). In addition, the femurs of female subjects rotated more internally than the femurs of male during the stance phase (P = 0.011). We concluded that normal Chinese knees exhibited distinct gait patterns, except for anteroposterior motion. Women and men exhibit different axial rotations and mediolateral translation patterns during their treadmill gait. (C) 2015 Elsevier B.V. All rights reserved.
机译：很少报道中国或亚洲人步态正常的胫股数据。这项研究旨在研究基于新型便携式系统的成年中国人步态的六自由度（6DOF）膝关节运动学。在跑步机步态中研究了28名健康的中国受试者（56膝）。一组光学标记簇附着在每个受试者的大腿和小腿上，通过光学关节运动学测量系统对其进行跟踪。最初，将膝部界标相对于标记簇集数字化，以确定用于计算6DOF膝关节运动学的局部坐标系。计算了6DOF和5个运动学参数的运动范围（ROM），并比较了双侧膝盖和性别。我们发现膝盖旋转以及近前和中外侧平移的运动在屈曲和伸展过程中显示出相似的模式。但是，前后翻译没有显示清楚的模式。在这项研究中获得的ROM在6DOF中的结果与现有文献中报道的结果相当。在ROM或5个运动学参数中，左右膝盖之间没有发现统计学差异。然而，发现步态在步态中外侧ROM高于女性（P = 0.014）。此外，在站立阶段，女性受试者的股骨比男性股骨更向内旋转（P = 0.011）。我们得出的结论是，除了前后运动之外，正常的中国膝盖表现出明显的步态模式。男性和女性在跑步机步态中表现出不同的轴向旋转和中外侧平移模式。 （C）2015 Elsevier B.V.保留所有权利。

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