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在行走过程中,跨骨的四肢对生物机械的影响

Amanda L Vinson¹, Nicholas W Vandenberg¹, Mohamed E Awad²

¹Department of Mechanical Engineering, University of Colorado Denver, Denver CO, United States.

Journal of biomechanics

|April 18, 2024

概括

骨的四肢改善了跨截肢 (TTA) 的人的行走生物力学. 这可以通过增强关节对称性和改变植入后的负荷模式来降低腰部疼痛 (LBP) 和骨关节炎 (OA) 的风险.

科学领域:

生物力学生物力学
整形外科整形外科整形外科
康复工程康复工程

背景情况:

单侧横截肢 (TTA) 患者在使用插座假肢时经常在行走时表现出不对称的关节生物力学.
这种不对称性增加了诸如腰部疼痛 (LBP) 和骨关节炎 (OA) 等二次并发症的风险.
骨的肢体为传统的插座假肢提供了替代方案,但它们对多关节生物力学的影响需要研究.

研究的目的:

确定骨四肢使用对单边TTA患者在行走过程中多关节生物力学的影响.
为了比较关节动力学,内部关节时刻和关节反应力 (JRFs) 在骨肢体植入之前和之后.

主要方法:

十名单方面TTA的参与者在地面行走时接受了运动捕捉 (动力学,地面反应力).
在骨肢体植入之前和12个月后收集数据,遵循结构化康复方案.
肌肉骨模型被用来计算关节时刻和JRF,分析重点是姿势周期和四肢之间的对称性 (正常化对称性指数 - NSI).

主要成果:

与插座假肢使用相比,在残留和完整的四肢中,骨固定四肢使用的前面平面骨盆和腰部运动范围 (ROM) 显著减少.
完整的肢体表现出部延伸时刻冲动的增加,部平面部时刻冲动对称性在植入后显著改善.
植入后观察到残余四肢膝盖延伸时刻冲动的减少.

结论:

骨肢体植入改变了多关节生物力学在TTA患者的行走过程中.
观察到的关节负荷和对称性的变化表明,LBP和OA的生物机械风险因素可能会减少.
这些发现凸显了骨四肢在改善TTA群体的功能结果和减轻二次并发症方面的潜力.

关键词:

在膝下截肢的截肢.生物力学生物力学骨的四肢定在骨上肌肉骨系统的建模骨整合假肢是一种骨整合假肢.截肢的截肢是指跨肢截肢的截肢.

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