Reliability of Modified Ashworth Scale Using a Haptic Robot Finger Simulating Finger Spasticity 손가락 경직을 모사하는 로봇 시뮬레이터를 이용한 경직도 검진의 신뢰도 평가

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This paper presents the inter-rater reliability of finger spasticity assessment tested realized by using finger simulator that mimics finger spasticity of patients after a stroke. For controlling the simulator torque, finger spasticity was modeled, and the model parameters were obtained by measuring quantitative data while grading based on Modified Ashworth Scale (MAS). A robotic finger simulator was designed for mimicking finger spasticity. Evaluation of this simulator with the help of seven rehabilitation doctors showed that the simulator had a Cohen's kappa value of 0.619 for Metacarpophalangeal Joint and 0.514 for Proximal Interphalangeal Joint. Fleiss' kappa between raters is 0.513 for Metacarpophalangeal Joint and 0.486 for Proximal Interphalangeal Joint. Therefore, the spasticity assessment made by MAS grade system is not reliable owing to the subjectivity of the assessment. The proposed robotic simulator can be used as a training tool for improving the reliability of the spasticity assessment.
Publisher
Korean Society of Mechanical Engineers
Issue Date
2017-02
Language
Korean
Article Type
Article
Keywords

Grading; Reliability; Robotic arms; Robotics; Finger; Inter-rater reliabilities; Metacarpophalangeal joints; Modified Ashworth scale; Proximal interphalangeal joints; Quantitative data; Spasticity; Spasticity assessments; Simulators

Citation

Transactions of the Korean Society of Mechanical Engineers, B, v.41, no.2, pp.125 - 133

ISSN
1226-4881
DOI
10.3795/KSME-B.2017.41.2.125
URI
http://hdl.handle.net/10203/225502
Appears in Collection
ME-Journal Papers(저널논문)
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