[The x-ray radiological semeiotics of the pain syndrome in a traumatic lesion of the brachial plexus].

X-ray radionuclide studies revealed a variety of morphological changes at the cervicothoracic levels of the spinal cord and its meninges. Despite a preganglionary injury to the brachial plexus, there was a clear-cut correlation between the level and nature of an injury on the one hand, and the severity of the pain syndrome, on the other. A more significant progression was observed in abruption of the inferior roots than in that of superior ones. The X-ray radionuclide correlations allow one to assess the nature of abnormal changes not only at the preganglionary, but postganglionary levels.