Multi-segmental thoracic spine kinematics measured dynamically in the young and elderly during flexion
Multi-segmental thoracic spine kinematics measured dynamically in the young and elderly during flexion
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DOI：
10.1016/j.humov.2017.05.011
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发表时间：
2017-08-01
影响因子：
2.1
通讯作者：
Ferguson, Stephen J.
中科院分区：
文献类型：
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作者：
Ignasiak, Dominika;Rueger, Andrea;Ferguson, Stephen J.
与颈椎和腰椎区相反，胸椎的正常运动学尚未被彻底研究。本研究的目的是表征正常的多节段连续运动的整个胸腰椎，在屈曲机动，在年轻和老年受试者。分析了42名健康志愿者：21名年轻人（年龄= 27.00 +/- 3.96）和21名老年人（年龄= 70.1 +/- 3.85）。用运动捕捉系统记录脊柱运动，并使用三阶多项式函数来近似整个运动序列中的脊柱曲率。分析了两个年龄组的平均运动特征。与腰椎和髋部相比，在两个年龄组中脊柱胸段的屈曲时间是不同的（p = 0.011）：在大多数年轻人中观察到延迟/顺序运动类型，而在老年人中观察到大多数同时运动模式。下胸椎段屈曲也有类似的趋势（p = 0.017）。在区域和分段位移和速度方面也发现了年龄组之间的差异。报道的胸椎运动学特征可能在未来支持异常运动的识别或用于改进脊柱的生物力学模型。
In contrast to the cervical and lumbar region, the normal kinematics of the thoracic spine have not been thoroughly investigated. The aim of this study was to characterize normal multi segmental continuous motion of the whole thoracolumbar spine, during a flexion maneuver, in young and elderly subjects. Forty-two healthy volunteers were analyzed: 21 young (age = 27.00 +/- 3.96) and 21 elderly (age = 70.1 +/- 3.85). Spinal motion was recorded with a motion-capture system and analyzed using a 3rd order polynomial function to approximate spinal curvature throughout the motion sequence. The average motion profiles of the two age groups were characterized. Flexion timing of the thoracic region of the spine, as compared to the lumbar spine and hips, was found to be different in the two age groups (p = 0.011): a delayed/sequential motion type was observed in most of the young, whereas mostly a simultaneous motion pattern was observed in the elderly subjects. A similar trend was observed in flexion of the lower thoracic segments (p = 0.017). Differences between age groups were also found for regional and segmental displacements and velocities. The reported characterization of the thoracic spine kinematics may in the future support identification of abnormal movement or be used to improve biomechanical models of the spine.