Multi-segment trunk kinematics during locomotion and elementary exercises
Multi-segment trunk kinematics during locomotion and elementary exercises
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DOI：
10.1016/j.clinbiomech.2011.01.015
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发表时间：
2011-07-01
影响因子：
1.8
通讯作者：
Benedetti, Maria Grazia
中科院分区：
文献类型：
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作者：
Leardini, Alberto;Biagi, Fabio;Benedetti, Maria Grazia
背景：在日常生活活动中，健康受试者的人体躯干节段的运动已经被描述为要么使用过于简化的模型，要么使用孤立的复杂解剖技术的繁琐技术。本研究描述了基于新技术的多节段躯干运动，该技术是实验所暗示的技术限制和临床相关性之间的折衷。方法：通过四个胸部标记的最佳空间匹配来跟踪胸部节段。通过两个肩峰上的标记计算单独的二维肩线相对于胸部的旋转和平移。在基于四个骨盆脊柱标记的解剖参考系中，通过来自附加四个皮肤标记的 5 链接段模型来表征脊柱运动。在 10 名健康受试者和 1 名临床病例中，在静态直立姿势、椅子起坐、上下台阶和水平行走，以及整个躯干的基本屈曲和伸展、侧向弯曲和轴向旋转运动期间，对这 14 个标记进行了跟踪。结果：在十次重复中，大多数测量的受试者内重复性都很高，脊柱所有平面旋转的平均标准偏差小于 1.8 度，脊柱所有平面旋转的平均标准偏差小于 1 毫米。肩部翻译。尽管模式不同，但在所有受试者中都发现了大的运动，这也揭示了三个解剖平面上有趣的耦合。解释：在简单的练习和日常生活的运动任务中，在所有三个解剖平面中的每个不同的躯干节段上都会发生相当大的受试者特定运动。使用当前新的躯干模型对病理受试者进行的测量将揭示异常条件下相应的运动模式和范围。 (C) 2011 Elsevier Ltd. 保留所有权利。
Background: Motion of human trunk segments in healthy subjects during activities of daily living has been described either with oversimplified models or with cumbersome techniques of isolated anatomical complex. This study describes multi-segmental trunk motion based on a new technique which is a compromise between technical limitations, implied with the experiments, and clinical relevance.Methods: The thorax segment was tracked by the optimal spatial matching of four thoracic markers. The separate bi-dimensional shoulder line rotations and translations with respect to the thorax were calculated by markers on the two acromions. Spine motion was characterised by a 5-link-segment model from additional four skin markers, in the anatomical reference frame based on four pelvic spine markers. These 14 markers were tracked in 10 healthy subjects and one clinical case during static upright posture, chair rising-sitting, step up-and-down and level walking, and also during elementary flexion and extension, lateral bending, and axial rotation movements of the entire trunk.Findings: Intra-subject repeatability over ten repetitions was found to be high for most of the measurements, with average standard deviations of less than 1.8 degrees for all planar rotations at the spine, and less smaller than 1 mm for shoulder translations. Large motion, albeit with different patterns, was found in all subjects, also revealing interesting couplings over the three anatomical planes.Interpretation: Considerable subject-specific motion occurs at each of these different trunk segments in all three anatomical planes, in simple exercises and in motor tasks of daily living. Measurements taken with the present new trunk model in pathological subjects shall reveal corresponding patterns and ranges of motion in abnormal conditions. (C) 2011 Elsevier Ltd. All rights reserved.