Thoracic outlet syndrom neurography and Nerve Block of the brachial plexus.

1) Neurography of the brachial plexus.For a diagnosis of thoracic outlet syndrome, we use neurography of the brachial plexus. We believe that it is a useful diagnostic method from experiences of about 100 cases.The situation of normal neurogram may be understood from our anatomical study by cadavers. Coloring material which was injected in the brachial plexus of fresh cadaver, was extended along the plexus, and filled in the loose connective tissues around the plexus.2) Nerve Block of the brachial plexus.We use block of the brachial plexus as a conservative treatment for thoracic outlet syndrome. The effectiveness of block is greatest in patients who have severe symptom and sign, and have not so abnormal neurogram.It seems that the significance of block is as same as a role of epidural block for lumber disc herniation, etc.