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Journal of the Korean Academy of Rehabilitation Medicine 1993;17(3):312-320.
Dynamic electromyography in the spastic hands of stroke patients for the evaluation of motor control.
Seo, Jeong Hwan , Yoon, Tae Sik , Chun, Sae Il , Cho, Kyoung Ja , Su, Hyae Jung
Department of Rehabilitation Medicine, Yonsei University College of Medicine
뇌졸중에 의한 경직성 편마비의 손기능 평가를 위한 동적 근전도
서정환, 윤태식, 전세일, 조경자, 서혜정
연세대학교 의과대학 재활의학교실

In the spastic hands of 15 stroke patients, grip strength, prehension, Modified Barthel Index score and muscle activity pattern by dynamic electromyography were evaluated. The following 6 muscles were examined; flexor pollicis longus, flexor digitorum profundus, flexor digitorum superficialis, extensor pollicis longus, extensor digitorum communis and extensor carpi radialis. Flexor pollicis longus showed normal EMG activity pattern in 86% and flexor digitorum profundus and other muscles were normal in 67% and 40%, respectively at the involved side, In general, normal activity pattern was more frequent in flexors than in extensors. There were significant correlation between the prehension and normal EMG activity pattern of muscles (p<0.05). Three point pulp pinch was the most difficult type of prehension to stroke patients, followed by 3 point tip pinch, lateral pinch, release and grasp as in order. Extensor carpi radialis showed abnormal activity pattern in about 60% regardless of the involvement which may be reflecting interpersonal variety of its function on hand motion.

Key Words: Stroke, Dynamic electromyography, Grip strength, Modified Barthel index
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