不同扭矩曲线对手部重量补偿的功效。

IF 3.4 Q2 ENGINEERING, BIOMEDICAL Wearable technologies Pub Date : 2024-01-29 eCollection Date: 2024-01-01 DOI:10.1017/wtc.2023.23
Bas J van der Burgh, Suzanne J Filius, Giuseppe Radaelli, Jaap Harlaar
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引用次数: 0

摘要

矫形腕托有利于肌肉无力者将手保持在中性休息位置,防止潜在的腕部挛缩。手部的重量补偿非常复杂,因为支撑水平取决于手腕和前臂的方向。为了探索简化的方法,我们使用机械腕部支撑系统,将两种不同的重量补偿策略(恒定和线性)与理论上的理想正弦曲线和无补偿进行了比较。所有三种补偿策略都显示,反重力腕伸肌的表面肌电活动明显减少了 47-53%。然而,在较高的掌屈区域,所有补偿策略都发现腕屈肌的表面肌电活动显著增加了 44-61%。各种补偿策略之间没有明显差异。可以得出两个结论:(1)用于体重补偿的简化扭矩曲线(如恒定或线性)与理论上理想的正弦曲线同样有效;(2)即使是理论上理想的曲线也不能提供完美的支持,因为除体重外的其他因素(如被动关节阻抗)很可能会影响腕关节所需的补偿扭矩。
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The efficacy of different torque profiles for weight compensation of the hand.

Orthotic wrist supports will be beneficial for people with muscular weakness to keep their hand in a neutral rest position and prevent potential wrist contractures. Compensating the weight of the hands is complex since the level of support depends on both wrist and forearm orientations. To explore simplified approaches, two different weight compensation strategies (constant and linear) were compared to the theoretical ideal sinusoidal profile and no compensation in eight healthy subjects using a mechanical wrist support system. All three compensation strategies showed a significant reduction of 47-53% surface electromyography activity in the anti-gravity m. extensor carpi radialis. However, for the higher palmar flexion region, a significant increase of 44-61% in the m. flexor carpi radialis was found for all compensation strategies. No significant differences were observed between the various compensation strategies. Two conclusions can be drawn: (1) a simplified torque profile (e.g., constant or linear) for weight compensation can be considered as equally effective as the theoretically ideal sinusoidal profile and (2) even the theoretically ideal profile provides no perfect support as other factors than weight, such as passive joint impedance, most likely influence the required compensation torque for the wrist joint.

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来源期刊
CiteScore
5.80
自引率
0.00%
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审稿时长
11 weeks
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