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首页> 外文期刊>Journal of NeuroEngineering Rehabilitation >Elbow spasticity during passive stretch-reflex: clinical evaluation using a wearable sensor system
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Elbow spasticity during passive stretch-reflex: clinical evaluation using a wearable sensor system

机译：被动牵拉反射期间的肘部痉挛：使用可穿戴传感器系统的临床评估

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Background Spasticity is a prevalent chronic condition among persons with upper motor neuron syndrome that significantly impacts function and can be costly to treat. Clinical assessment is most often performed with passive stretch-reflex tests and graded on a scale, such as the Modified Ashworth Scale (MAS). However, these scales are limited in sensitivity and are highly subjective. This paper shows that a simple wearable sensor system (angle sensor and 2-channel EMG) worn during a stretch-reflex assessment can be used to more objectively quantify spasticity in a clinical setting. Methods A wearable sensor system consisting of a fibre-optic goniometer and 2-channel electromyography (EMG) was used to capture data during administration of the passive stretch-reflex test for elbow flexor and extensor spasticity. A kinematic model of unrestricted passive joint motion was used to extract metrics from the kinematic and EMG data to represent the intensity of the involuntary reflex. Relationships between the biometric results and clinical measures (MAS, isometric muscle strength and passive range of motion) were explored. Results Preliminary results based on nine patients with varying degrees of flexor and extensor spasticity showed that kinematic and EMG derived metrics were strongly correlated with one another, were correlated positively (and significantly) with clinical MAS, and negatively correlated (though mostly non-significant) with isometric muscle strength. Conclusions We conclude that a wearable sensor system used in conjunction with a simple kinematic model can capture clinically relevant features of elbow spasticity during stretch-reflex testing in a clinical environment.
机译：背景痉挛是上运动神经元综合征患者中普遍存在的一种慢性疾病，会严重影响其功能，并且治疗费用昂贵。临床评估通常是通过被动拉伸反射测试进行的，并按照诸如改良Ashworth量表（MAS）的等级进行评分。但是，这些量表的敏感性受到限制并且是高度主观的。本文显示，在拉伸反射评估过程中佩戴的简单可穿戴传感器系统（角度传感器和2通道EMG）可用于更客观地量化临床环境中的痉挛。方法采用被动式伸缩反射试验进行肘屈肌和伸肌痉挛的可穿戴传感器系统，该系统由光纤测角仪和2通道肌电图（EMG）组成。使用不受限制的被动关节运动的运动学模型从运动学和EMG数据中提取指标，以表示非自愿反射的强度。探索了生物测定结果与临床指标（MAS，等距肌肉力量和被动运动范围）之间的关系。结果基于9名不同程度的屈肌和伸肌痉挛患者的初步结果显示，运动学和肌电图得出的指标相互之间密切相关，与临床MAS呈正相关（显着相关），而与MAS呈负相关（尽管大部分无关紧要）等距的肌肉力量。结论我们得出的结论是，与简单运动学模型结合使用的可穿戴传感器系统可以在临床环境中的拉伸反射测试过程中捕获肘部痉挛的临床相关特征。

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