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在穿骨定假肢上运行时的植入物负荷:一个多体建模案例研究

Marnick Los¹, Malte Asseln¹, Vera Kooiman²

¹Department of Biomechanical Engineering, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands.

Journal of biomechanics

|December 11, 2025

概括

使用骨假肢 (BAP) 跑步可能是安全的,而与日常步行相比,跑步专用假肢 (RSP) 减少了力量. 这表明骨植入系统的机械故障风险较低.

科学领域:

生物力学生物力学
生物医学工程生物医学工程
整形外科手术整形外科手术

背景情况:

骨式假肢 (BAP) 对截肢者的下肢提供了优势,包括直接负荷转移.
目前的BAP植入物在像走路这样的日常活动中表现良好,但在像跑步这样的高冲击活动中安全性仍未确立.

研究的目的:

为了确定在走路和跑步期间在BAP植入物上的力量和时刻.
为了比较日常使用假肢 (DUP) 与运行特定假肢 (RSP) 在这些活动中所经历的负荷.

主要方法:

一个案例研究涉及单一的单边横骨BAP使用者,用压式骨整合植入物.
使用带有仪器的分割带跑步机收集数据,速度各不相同.
通过多体建模和反向动力学进行动力学重建,以计算力和动量.

主要成果:

与在DUP上行走相比,在RSP上跑步显著降低了峰值前后后力 (40%) 和动瞬间 (38%).
与步行相比,在RSP上运行时,峰值轴力增加了59%.
在RSP上运行显示了较高的后期姿态斜时刻,但比在DUP上运行更低的峰值压缩力.

结论:

在跑步过程中经历的力量和时刻,特别是与RSP一起,似乎可以接受骨植入系统.
曲时刻可能比轴承负荷更不有害,这表明运行比以前认为的机械故障风险更低.
需要进一步的研究,以充分理解机械影响骨压力和长期植入物存活.

关键词:

骨固定假体骨固定假体是一种骨固定假体.植入物加载植入物加载多体建模的多体建模骨质整合植入物植入物植入物跑步跑步跑步跑步截肢的截肢是指跨肢截肢的截肢.

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