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机械测试方法的比较,用于确定假肢足的准度
Felix Starker1,2, Christophe Guy Lecomte1, Andrew Hansen3,4
1Biomechanical Solutions, Össur ehf, Reykjavik, 110, Iceland.
Medical engineering & physics
|February 5, 2026
概括
假肢足准度 (QS) 的测试方法显示出显著的差异,影响生物力学. 为了可靠地评估假肢脚,需要进行标准化测试.
科学领域:
- 生物力学 生物力学
- 假肢工程 假肢工程
- 康复技术 康复技术 康复技术
背景情况:
- 假肢脚的准度 (QS) 和脚关节的QS (AJQS) 对用户的生物力学和舒适性至关重要.
- 目前的QS评估依赖于基于机器的方法,而AJQS通常使用用户测试,导致不清楚的可比性.
- 现有的假肢足硬度测试方法缺乏标准化,这阻碍了可靠的比较.
研究的目的:
- 为了比较五种常见的测试方法的结果,以检测假肢足部准度 (QS) 和脚关节QS (AJQS).
- 为了确定在不同假肢脚设计中评估刚性的方法间的变化和局限性.
- 调查不同度指标和前后力 (APF) 之间的关系.
主要方法:
- 使用单轴测试机测量3个假脚 (SACH,K2,能量储存和返回) 的脚跟和前脚QS.
- 采用2D运动跟踪系统来计算脚跟和前脚的AJQS.
- 应用了五种不同的,通常描述的测试方法进行比较分析.
主要成果:
- 在QS (高达24%) 和AJQS (高达19%的脚跟,55%的前脚) 中观察到显著的方法间差异.
- 前后力 (APF) 显示出大量变化 (高达161%),可能是由于方法模两可.
- 在五种方法中,有两种方法无法区分不同假肢脚样本的刚度,突出了这些限制.
结论:
- 目前用于评估假肢足的QS和AJQS的方法表现出相当大的变化和缺乏可比性.
- 测试方案的标准化对于准确的假肢足评价和临床决策至关重要.
- 方法上的模两可,极大地影响了假肢脚硬度和力测量的可靠性.
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