用于糖尿病患者的定制适应性内的负载转移途径
Dylan J Heino1, Scott Telfer2, Kimberly A Nickerson1
1VA RR&D Center for Limb Loss and MoBility (CLiMB), VA Puget Sound Health Care System, 1660 S Columbian Way, MS 151, Seattle, WA 98108, United States of America; Department of Mechanical Engineering, University of Washington, 3900 E Stevens Way NE, Box 352600, Seattle, WA 98195, United States of America.
3D打印定制的适应性内有效地重新分配脚负荷, 与用于预防糖尿病足的标准设计相比, 优化的3D打印内显示出更高的负载转移.
科学领域:
- 生物力学
- 足部医学
- 医疗器械设计
背景情况:
- 在患有糖尿病且有足部风险的人群中,定制的适应性内可降低足部压力.
- 3D打印的内可以为患者提供特定的几何形状和材料特性,
- 了解3D打印插件的负载再分配机制对于优化糖尿病脚部护理至关重要.
研究的目的:
- 在标准和3D打印插件之间对九个脚部区域的负载再分配机制进行比较.
- 分析负载传输路径使用新的负载传输算法.
- 评估不同3D打印优化方法的有效性 (有限元与基于压力).
主要方法:
- 包含来自17名糖尿病患者的26英尺高的前脚脚压力.
- 提供三种定制的适应性内类型:标准护理,有限元优化3D打印和基于压力的3D打印.
- 在行走过程中记录足部压力和力-时间积分,并加上负载转移算法分析.
主要成果:
- 所有内的主要负载传输路径是从甲头到中脚,特别是从第一个甲头到中脚.
- 有限元件优化3D打印的内显示出最大的负载转移远离四足骨头.
- 在测试的内条件之间观察到负载再分配的显著差异.
结论:
- 鞋底设计元素 (门高度,四足杆,卸载区) 显著影响脚部负载传递路径.
- 定制的3D打印内显示出在高危糖尿病患者群体中有效卸载的潜力.
- 通过负载转移分析量化内性能提供了有价值的见解,承认对象特定的变化.
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