腓骨神经损伤患者afo控制足下垂的设计及静载试验

May Su Khaing, M. Samala, G. Guerra, Attaporn Wisessint
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引用次数: 0

摘要

踝关节足矫形器可以帮助像落脚这样的残疾人更理想地行走。然而,在临床使用之前,必须进行此类装置的设计和静态力学测试。本研究的目的是设计和制造一种可调节后叶弹簧(PLS)踝足矫形器(AFO),并对可调节后叶弹簧(PLS)踝足矫形器和传统柔性踝足矫形器进行机械静载荷试验。使用Instron 8801试验机对两种不同的AFO设计进行静态力学测试(弯曲测试);可调PLS AFO和传统柔性AFO。两个afo均由5mm聚丙烯(PP)制成。采用8 mm厚的聚丙烯(PP)制作PLS AFO后杆,在传统AFO中加入3 mm PP并在热成型前用5 mm PP进行增强。根据弯矩与角度曲线的斜率计算刚度性能:可调PLS AFO为0.4 Nm/度~ 0.6 Nm/度,传统柔性AFO为0.3 Nm/度~ 0.5 Nm/度。以同样的方式,可调PLS AFO需要最大负载(25至31 N)的最终位移时,传统的AFO只需要26 N。可调PLS AFO具有比传统柔性AFO更高的刚度特性。未来的研究计划评估足下垂患者在行走过程中的下肢时空和矢状位运动学步态参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and Static loading test of AFOs to control foot drop among patients with Peroneal Nerve injury
Ankle foot orthotics can help persons with disabilities such as drop foot to ambulate more optimally. However, before clinical use, the design and static mechanical testing of such devices must occur. The purpose of this study was to design and fabricate an adjustable Posterior Leaf Spring (PLS) ankle-foot orthosis (AFO) and to perform the mechanical static loading test for an Adjustable PLS AFO and traditional flexible AFO. Static mechanical testing (bending test) was performed using an Instron 8801 machine for two different AFO designs; the adjustable PLS AFO and traditional flexible AFO. Both AFOs were made with 5 mm Polypropylene (PP).The posterior bar of PLS AFO was made with 8 mm thick polypropylene (PP), and in traditional AFO, 3 mm PP was added and reinforced before thermoforming with 5 mm PP. The stiffness properties were calculated from the slope of the moment versus angles graph and were as follows: adjustable PLS AFO was 0.4 Nm/ degree to 0.6 Nm/degree, while Traditional flexible AFO has 0.3 Nm/degree to 0.5 Nm/degree. In the same way, adjustable PLS AFO requires the maximum Load (25 to 31 N) for the final displacement when traditional AFO needs 26 N only. The adjustable PLS AFO has higher stiffness properties than the traditional flexible AFO. Future studies are planned to evaluate the lower limb spatiotemporal and sagittal kinematic gait parameters of foot drop patients during walking.
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