肩関節運動からみた末梢神経障害

Abstract

We examined peripheral nerve lesions induced by the overuse and the forced position of the shoulder in three volleyball players and a tennis coach. The suprascapular nerve was entraped not only at the scapular notch in relation to the superior scapular transverse ligament but also at the spinoglenoid notch. The patients showed considerable recovery after surgery except for one with muscle degeneration itself. On the other hand, traction injury of the axillary nerve was generated at the quadrilateral space in the forced position of abduction and external rotation of the shoulder, in which the suprascapular nerve was also injured simultaneously at the scapular notch. Among five individuals involved in motor-bike accidents, one was operated on at the scapular notch, four at these sites mentioned above, who were able to abduct the shoulder postoperatively. Early diagnosis and operation such as decompression or neurolysis at the scapular notch, spinoglenoid notch and quadrilateral space should be accomplished as soon as possible so that the patients can resume sports and daily activities.