Katakansetsu
Online ISSN : 1881-6363
Print ISSN : 0910-4461
ISSN-L : 0910-4461
ELECTROMYOGRAPHIC STUDY ON ELEVATION OF SHOULDER JOINT
Tadashi TomonagaNobuyuki ItoRyohei Suzuki
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1987 Volume 11 Issue 1 Pages 9-13

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Abstract

The flexion, scapular abduction and abduction of the arm were studied in 20 normal shoulders by integrated EMG combined with electrogoniometry permitting simultaneous measurement of the elevation angle. The trapezius and supraspinatus muscles and the anterior and middle fibers of the deltoideus muscle showed high activity and such results indicated that those muscles played an important role in elevation of the arm. From the result of the correlation analysis between the calculated work and the integrated EMG activity, it was suspected that the action pattern of the supraspinatus muscle was different from that of other muscles.

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© Japan Shoulder Society
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