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首页> 外文期刊>Journal of Biomechanics >An approach for hip joint center calculation for use in seated postures.
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An approach for hip joint center calculation for use in seated postures.

机译：一种用于坐姿的髋关节中心计算方法。

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In seated postures, such as those in office or automotive seats, locating the hip joint center (HJC) using three markers on the pelvis has been difficult if not impossible. A two-target approach by Bell et al. (J. Biomech. 23 (1990) 617) has been used, however, this method was shown to have inaccuracies when compared to the three-target method developed by Seidel et al. (J. Biomech. 28 (1995) 995). A new two-target method that is specific to the seated environment, has better accuracy than the Bell et al. approach, and is based on the Seidel et al. approach was developed and tested on 13 seated subjects.This new method used three targets and an initial reference file to estimate the HJC location. Once the HJC was located, assumptions were made that the magnitudes between the HJC and the respective anterior superior iliac spine, and the HJC and the respective lateral epicondyle remained constant.The primary concern when evaluating this new method was the affect of seated posture movement, in particular leg splay and spinal flexion on the assumptions. The results obtained with the new approach were compared to Seidel et al. and provided HJC locations with average differences of 3.8, 1.2 and 2.8mm for spinal flexion in the anterior/posterior, medial/lateral and superior/inferior directions, respectively, and 2.3, 1.0 and 1.4mm for knee splay. The proposed method provided better HJC estimation than the Bell et al. approach particularly in the superior/inferior dimensions.
机译：在坐姿中，例如在办公室或汽车座椅中，即使不是不可能，也很难使用骨盆上的三个标记来定位髋关节中心（HJC）。 Bell等人的两目标方法。 （J.Biomech.23（1990）617）已经被使用，但是，与Seidel等人开发的三靶方法相比，该方法显示出不准确性。 （J.Biomech.28（1995）995）。一种新的针对目标环境的两目标方法，其准确性优于Bell等人。方法，并且基于Seidel等。该方法已针对13个就座的受试者进行了开发和测试。该新方法使用了三个目标和一个初始参考文件来估算HJC的位置。一旦确定了HJC，就假设HJC与各自的前上棘之间，HJC与各自的上dy上突之间的幅度保持恒定。特别是在这些假设下的腿张开和脊柱弯曲。用新方法获得的结果与Seidel等进行了比较。并提供HJC位置，前/后，内/外和上/下方向的脊柱屈曲的平均差分别为3.8、1.2和2.8mm，膝部张开的平均差分别为2.3、1.0和1.4mm。所提出的方法提供了比Bell等人更好的HJC估计。这种方法尤其适用于上/下尺寸。

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