[Gas dissection of the vertebral body or the vertebral intrasomatic space phenomenon. Physiopathological arguments].

Some features concerning the ischemic origin of the gaseous dissection of the vertebral body and the physiopathology of the necrose, are considered in the adult: --in the way, the anterior topography of vaccum phenomenon is on the model of the arterial distribution in the vertebral body, implying ischemic origin of gaseous dissection; --further, two cases of intravertebral vaccum cleft, noticed after minor trauma, suggest the major role of fractures at the origin of ischemia.