[Vertebrogenic subpiriform compression-ischemic neuropathy of the sciatic nerve with predominant lesions of fibers of the peroneal nerve (pathogenesis, clinical picture, treatment)].

Using clinical and instrumental methods of investigation, seven patients with vertebrogenic neuropathy of the lesser femoral nerve were examined with reference to three levels of compression: 1) diskoradicular , 2) the subpiriform space: 3) osteofibrous channel on the leg. The involvement of the lesser femoral nerve is facilitated by its considerable length and by a large number of vulnerable points on it. Cases of the combined signs of the impaired lesser femoral nerve fibers at three levels are explained by the theory of "double compression". The guidelines of the differential therapy are proposed with regard to the level of involvement and the stage of exacerbation.