踝足矫形器多自由度关节的设计与初步验证

IF 0.8 4区医学 Q4 ENGINEERING, BIOMEDICAL

Journal of Medical Devices-Transactions of the Asme Pub Date : 2021-12-11 DOI:10.1115/1.4053200

Toby Elery, Emma Reznick, Staci M. Shearin, Karen J. McCain, R. Gregg

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引用次数: 2

摘要

本文提出了一种用于踝足矫形器（AFO）的多自由度关节（M-DOF）的新颖设计，旨在改进商用双动关节（DAJ）。M-DOF旨在保持DAJ的功能，同时增加背屈刚度并引入倒置/外翻。这种运动范围的增加是为了在步态过程中使下肢肌肉产生更大的参与。M-DOF在一名健全和一名中风受试者身上进行了实验验证。在步行速度上，M-DOF AFO对健全受试者的关节运动学影响最小。与DAJ AFO相比，当佩戴M-DOF AFO时，中风受试者的踝关节背屈/跖屈和膝关节屈曲没有严重改变。M-DOF AFO允许的新DOF将脚踝的内翻/外翻增加了约3°，与DAJ AFO的步态相比，没有引入任何新的补偿。

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Design and Initial Validation of a Multiple Degree-of-Freedom Joint for an Ankle-Foot Orthosis

This paper presents the novel design of a Multi-Degree-Of-Freedom joint (M-DOF) for an Ankle-Foot Orthosis (AFO) that aims to improve upon the commercially available Double Action Joint (DAJ). The M-DOF is designed to maintain the functionality of the DAJ, while increasing dorsiflexion stiffness and introducing inversion/eversion. This increase in range of motion is designed to produce greater engagement from lower limb muscles during gait. The M-DOF was experimentally validated with one able-bodied and one stroke subject. Across walking speeds, the M-DOF AFO minimally affected the able-bodied subject's joint kinematics. The stroke subject's ankle dorsiflexion/plantarflexion and knee flexion were not heavily altered when wearing the M-DOF AFO, compared to the DAJ AFO. The new DOF allowed by the M-DOF AFO increased the inversion/eversion of the ankle by ~3°, without introducing any new compensations compared to their gait with the DAJ AFO.

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来源期刊

Journal of Medical Devices-Transactions of the Asme ENGINEERING, BIOMEDICAL-

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Medical Devices presents papers on medical devices that improve diagnostic, interventional and therapeutic treatments focusing on applied research and the development of new medical devices or instrumentation. It provides special coverage of novel devices that allow new surgical strategies, new methods of drug delivery, or possible reductions in the complexity, cost, or adverse results of health care. The Design Innovation category features papers focusing on novel devices, including papers with limited clinical or engineering results. The Medical Device News section provides coverage of advances, trends, and events.