优化刚性脚足关节节节的设计:对度上的边缘线的定量评估
Sara Behforootan1, Panagiotis E Chatzistergos2, Nicola Eddison3
1Centre for Biomechanics and Rehabilitation Technologies, Staffordshire University, Stoke-on-Trent, UK.
Foot (Edinburgh, Scotland)
|April 5, 2025
概括
脚足关节整形 (AFOs) 的剪线设计显著影响其刚性. 精确的剪线位置对于优化AFO功能和确保制造过程中一致的质量控制至关重要.
科学领域:
- 生物力学 生物力学
- 整形器械和假肢
- 医疗器械设计 医疗器械设计
背景情况:
- 脚脚节整形 (AFOs) 对于管理神经疾病中的步行形至关重要.
- 目前对AFO设计参数,特别是trimline几何学的影响度的理解是有限的.
- 需要在AFO处方和制造方面进行标准化.
研究的目的:
- 使用参数有限元模型量化AFO边形几何对AFO刚度的影响.
- 为改善AFO处方和质量控制标准化提供见解.
- 为了研究线位置和AFO刚度之间的关系.
主要方法:
- 为AFOs开发和验证一个参数有限元 (FE) 模型.
- 系统地改变1-10毫米的线位置 (近距离和远距离脚)
- 使用实验确定的材料特性 (聚烯) 模拟背部屈曲负荷 (30Nm).
主要成果:
- 与实验数据相比,FE模型准确地预测了脚背部屈曲,但与实验数据相比存在小差异.
- AFO的截面位置显著影响了刚性;即使是微小的调整也会产生显著的影响.
- 后部trimline变化导致硬度线性下降,而远部变化显示出非线性效应.
结论:
- 线几何形状是影响设备刚性和功能的关键因素.
- 精确的处方和严格的质量控制对于优化AFO性能至关重要.
- 该研究强调了需要详细考虑AFO制造中的trimline设计的必要性.
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