This study concerns the posterior ramus of the second cervical spinal n., or greater occipital of Arnold. By means of dissections in formalin embalmed cadavers, an attempt was made to define its winding course and to locate it in relation to clinical or radiographic landmarks, so as to provide a guide for infiltration of the nerve with local anesthetic. At the same time a dynamic study was made to elucidate the relations of the nerve to adjacent structures during the different movements of the neck. This allowed us to propose clinical tests of nerve involvement and to reveal the zones where the nerve is anatomically vulnerable.

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