The Tohoku Journal of Experimental Medicine
Online ISSN : 1349-3329
Print ISSN : 0040-8727
ISSN-L : 0040-8727
Regular Contributions
Restoration of Shoulder Movement in Quadriplegic and Hemiplegic Patients by Functional Electrical Stimulation Using Percutaneous Multiple Electrodes
Junichi KameyamaYasunobu HandaNozomu HoshimiyaMinoru Sakurai
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1999 Volume 187 Issue 4 Pages 329-337

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Abstract

The purpose of this study is to restore the motion of the paralyzed shoulder caused by upper motor neuron disorders using functional electrical stimulation (FES). Percutaneous wire electrodes were implanted into twelve muscles of the shoulder in six patients with stroke or cervical spinal cord injury. The motion of the paralyzed shoulder was controlled by a portable FES computer system, with the three standard stimulation patterns for restoring motion of 90° flexion to 90° horizontal abduction, 90° flexion to 20° horizontal adduction, and 90° abduction to 90° horizontal adduction. Shoulder movements were repeatedly controlled according to the created stimulation patterns in five of the patients. The two dimensional motion analyzer also confirmed shoulder control over a satisfactorily broad range of excursion. One hemiplegic patient, who was a signboard painter, had his paretic left upper extremity improved by FES, and he drew a large picture on a board with his normal right hand and, with his affected left arm against the wall, to support his trunk. This may be a world first case of producing shoulder motion through FES.

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© 1999 Tohoku University Medical Press
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