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首页> 外文会议>National Conference on Biomedical Engineering;International Iranian Conference on Biomedical Engineering >An accelerometer-based objective assessment of spasticity: A simple pendulum model to evaluate outcome measures
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An accelerometer-based objective assessment of spasticity: A simple pendulum model to evaluate outcome measures

机译：加速度计的痉挛客观评估：一种简单的摆锤模型，以评估结果措施

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摘要

Spasticity is one of the common motor disorders that occurs due to upper motor neuron defects in patients such as stroke, spinal cord injury, cerebral palsy, and multiple sclerosis. Its measurement is often done using standardized clinical scales. One of the salient problems associated with this symptom is poor objectivity in its assessment. Several methods have been proposed in the past two decades from which passive joint movement and the Wartenberg pendulum test are the most practical, promising, and sensitive to changes. The purpose of this study was to investigate the capability of accelerometer-based outcome measures in assessment of spasticity through pendulum test. We also aimed at evaluation of sensitivity to choice of sensor on outcome measures' strength in discriminating levels of spasticity. In this study we have simulated oscillating movement of dropped limb in various levels of spasticity by a simple pendulum and adjustable friction level. Our results show that acceleration-based outcome measures are as strong as angle-based counterparts and can reliably discriminate levels of spasticity in the whole range of severity (87% discrimination index). We also found that choice of accelerometer does not have noticeable effect on the performance of this objective method of spasticity assessment.
机译：痉挛状态是发生由于患者上运动神经元缺陷，如中风，脊髓损伤，大脑性麻痹，多发性硬化的共同运动障碍之一。它的测量是使用标准化的临床量表常做的。一个与此相关的症状的突出问题是在其评估的客观性较差。有几种方法在过去二十年中从被动关节运动和Wartenberg酒店摆测试是最实用的，有前途，和敏感的变化被提出。这项研究的目的是探讨的基于加速计的结局措施痉挛的评估通过钟摆测试的能力。我们还针对敏感性评价对成果的措施强度传感器的选择，在鉴别痉挛的水平。在这项研究中，我们通过一个简单摆和可调摩擦水平模拟在各级痉挛的肢体下降的振荡运动。我们的结果表明，基于加速测试结果是强如基于角度的对应物并能在整个范围内的严重程度（87％鉴别指数）的痉挛状态的可靠判别水平。我们还发现，加速度计的这样的选择不会对痉挛评估这一目标方法的性能显着的影响。

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