[Anatomical bases of operative lesions of the musculocutaneous nerve in surgery of the shoulder].

The operative management by coracoid graft transfers in the recurrent dislocations of the shoulder and the frequent shoulder arthroscopies could be the source of lesions to the musculocutaneous nerve. Although rarely mentioned in articles, these complications certainly exist. The precise topography of this nerve does not seem to be well known by surgeons. Consequently, we returned to the anatomic study of the nerve with its variations and their relationship to the external terminal anomalies of the brachial plexus.