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首页> 外文期刊>Journal of Biomechanics >Scapular kinematics: effects of altering the Euler angle sequence of rotations.
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Scapular kinematics: effects of altering the Euler angle sequence of rotations.

机译：肩cap运动学：改变欧拉角旋转顺序的影响。

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摘要

An analysis of Euler angle sequences is presented for the scapula. In vivo kinematics were collected with a magnetic tracking device on eight healthy volunteers. To ensure accurate representation of scapular motion, pins were rigidly drilled into the scapular spine. Three rotations of the scapula with respect to the thorax were recorded during humeral elevation in the scapular plane: posterior (or backward) tilting, upward (or lateral) rotation and external rotation (or retraction). Rotations using all six possible Euler angle sequences were calculated for which each angle was represented only once. The sequence proposed by an International Society of Biomechanics subcommittee on shoulder motion (external rotation, upward rotation, posterior tilting) is consistent with both research- and clinical-based two-dimensional representations of scapular motion. Results from the present study indicate that changing sequence results in significant alterations in the description of motion, with differences up to 50 degrees noted for some angles. Therefore, in order to compare results across different laboratories, it is recommended that the proposed standard sequence be adopted.
机译：对肩cap骨的欧拉角序列进行了分析。用磁跟踪装置收集了八名健康志愿者的体内运动学信息。为确保肩representation骨运动的准确表示，将销钉牢固地钻入肩骨脊柱。在肱骨抬高肩cap平面期间，记录了肩cap骨相对于胸腔的三个旋转：向后（或向后）倾斜，向上（或侧向）旋转和外向旋转（或缩回）。计算使用所有六个可能的Euler角度序列的旋转，对于每个角度仅代表一次。国际生物力学学会小组委员会提出的肩部运动（外部旋转，向上旋转，后倾）的顺序与肩research骨运动的基于研究和临床的二维表示相一致。本研究的结果表明，改变顺序会导致运动描述发生重大变化，某些角度的差异最大为50度。因此，为了比较不同实验室的结果，建议采用建议的标准程序。

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