动力假肢脚不会降低相对于能量储存和返回脚的逆侧膝盖负荷,在一个功能多样化的群体中行走时,有单边横四肢损失的个体
Pawel R Golyski1, Brad D Hendershot2, John M Chomack3
1Extremity Trauma and Amputation Center of Excellence, Falls Church, VA, USA; Walter Reed National Military Medical Center, Bethesda, MD, USA.
在肢体丧失的个体中,与储能脚相比,动力假肢脚并不能显著减少膝盖负荷. 假肢足的选择本身可能无法预防对侧膝关节骨关节炎.
科学领域:
- 生物力学 生物力学
- 整形外科 整形外科 整形外科
- 假肢的使用 假肢的使用
背景情况:
- 对侧膝关节骨关节炎常见于单侧跨肢损失 (UTTLL) 的个体,影响运动.
- 动力 (POW) 假脚可能会减少膝盖负荷,这是骨关节炎的危险因素,但之前的研究使用了小的,均的样本.
- 之前的研究表明,参与者在UTTLL的年龄和经验水平上的多样性有限.
研究的目的:
- 为了比较与POW行走时的逆侧膝关节负荷,能量储存和返回 (ESR) 和节ESR (ART) 假肢脚.
- 调查假肢脚类型是否影响对侧膝关节骨关节炎的生物机械风险因素.
- 分析UTTLL个体的多样性队列,以提供可概括的发现.
主要方法:
- 量化了对侧肢垂直地面反应力 (vGRF),膝盖引力时刻 (KAM) 和轴骨接触力 (TCF).
- 研究了一组多样化的29个UTTLL个体 (年龄29-72岁,肢体损失5-387个月后的时间).
- 通过比较三种假肢类型的生物力学负荷:POW,ESR和ART.
主要成果:
- POW和ESR假脚导致类似的对侧膝盖负荷.
- 假肢脚引起最大的对侧膝盖负荷.
- 假肢推开功率的差异并不能完全解释POW和ESR脚之间的观察到的负载变化.
结论:
- 假肢类型本身可能不足以减轻UTTLL.患者的逆侧膝关节骨关节炎风险.
- ART脚显示较高的对侧膝盖负荷,可能是由于较小的推离力.
- 实验室测量的负荷可能不完全代表现实世界的膝盖负荷环境.
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