脚外骨架辅助 减少膝盖接触力,在行走的个体与脑麻
概括
脚外骨架辅助可以减少脑 (CP) 患者的膝盖负荷. 这种可穿戴设备通过改变行走时四头肌活动来降低膝盖接触力,从而有可能改善肌肉骨健康.
科学领域:
- 生物力学 生物力学
- 康复工程 康复工程
- 整形外科 整形外科 整形外科
背景情况:
- 肌肉骨健康对整体健康至关重要,脑 (CP) 经常导致步态障碍,关节疼痛和退行.
- 可穿戴辅助设备在改善CP的移动性方面表现有前途,但它们对关节负荷的影响尚不清楚.
研究的目的:
- 量化脚外骨架辅助对脑患者膝盖接触力的影响.
- 为了研究肌肉力量,关节负荷和脚辅助和无脚辅助的步态力学之间的关系.
主要方法:
- 11名患有脑膜炎的参与者在两个条件下在跑步机上行走:鞋子 (只穿鞋) 和外骨架辅助 (Exo).
- 基于电肌图 (EMG) 的建模用于估计下肢肌肉力量,通过EMG信号限制肌肉激活.
- 压力膝盖接触力是基于估计的肌肉力量来计算的.
主要成果:
- 脚外骨架辅助显著降低了9.3%的高峰后期姿势膝盖接触力和7.2%的平均姿势阶段膝盖接触力,相比于shod条件 (p ≤ 0.003).
- 辅助还降低了立场阶段四头肌肌力9.1% (p = 0.015),这与膝盖接触力降低密切相关 (p < 0.001).
- 个人步行参数,如较大的膝盖延伸和脚脚下屈曲,与膝盖下部接触力相关.
结论:
- 关节外骨架辅助可以降低CP患者的膝盖负荷.
- 膝盖负荷的减少似乎是通过走路时膝盖伸展肌肉力量的减少来实现的.
- 研究结果表明,关节辅助是一种潜在的策略,用于管理CP的膝关节压力.
相关概念视频
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