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Journal of Bone and Joint Surgery, 1949;31:825-830.
© 1949 by The Journal of Bone and Joint Surgery, Inc

Electromyography in Orthopaedics

Arthur L. Watkins M.D.1

1 Boston, Massachusetts

1. Electromyography has been found useful in studying the pattern of motor activity in normal and paretic muscles, particularly in poliomyelitis and peripheral-nerve injuries.

2. Degrees of spasticity, rigidity, and tremor may be measured semi-quantitatively by this method.

3. Information of diagnostic importance is obtained from patients with progressive muscle atrophy, Parkinson's disease, peripheral-nerve injuries, and hysteria.


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