We have performed arthodeses of shoulder joints for reconstructing shoulder functions so as to make upper extremities recover their functions such as flexion, abduction, and adduction. These operations showed that appropriate setting of fusion positions was vitally important, and that, in whole-and upper-plexus injuries, ranges or reconstructed motion differed depending on the remaining functions of the serratus anterior and the pectoralis major before operations. We tried to analyze shoulder

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... int movements after the arthrodeses by dynamic electromyographic method, in order to investigate how shoulder joint functions differed depending on the remaining muscle functions.