Gait Recovery in Healthy Subjects: Perturbations to the Knee Motion with a Smart Knee Brace.

Mehmet Temel, Katherine S Rudolph, Sunil K Agrawal
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Abstract

Smart Knee Brace (SKB) is designed to provide controlled perturbations to the human knee during walking. A dynamic model of human walking is then used to evaluate the human applied joint torques to hypothesize how the human neuro-muscular system modulates the joint torques as a response to the perturbations caused on the gait. Our results show that the neuro-muscular response to perturbations can be reasonably well characterized by including the following features in the model: (i) normal gait in the absence of perturbation, (ii) corrective torque at a joint in response to the error at that joint and other joints, (iii) a characteristic time shift in the response. We believe that these parameters can be used to characterize subjects who are more prone to falling under gait perturbations.

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健康受试者的步态恢复:智能膝关节支架对膝关节运动的扰动。
智能护膝(SKB)设计用于在行走过程中对人类膝盖提供可控的扰动。然后,使用人体行走的动态模型来评估人体施加的关节扭矩,以假设人体神经肌肉系统如何调节关节扭矩作为对步态引起的扰动的响应。我们的研究结果表明,神经肌肉对扰动的反应可以通过在模型中包括以下特征来合理地表征:(i)没有扰动时的正常步态,(ii)响应该关节和其他关节误差的关节的纠正扭矩,(iii)响应中的特征时移。我们相信这些参数可以用来描述更容易在步态扰动下跌倒的受试者。
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