OSTEOGENIC MECHANISM OF VERTEBROGENIC RAD ICULOPATHY

Intraosteal block was conducted in 86 patients with pronounced neurolo gical symptoms of lumbar osteochondrosis. To clarify the role of the i ntraosteal receptors in pathogenesis of the above symptoms and to eval uate the efficacy of the blocks, series of experiments were made on 8 cats. The authors studied evoked potentials in the cerebral cortex and thalamus in response to irritation of the sciatic nerve under the exp osure of the sciatic receptors to electrostimulation, intraosteal intr oduction of physiologic salt solution and trimecaine, electrostimulati on following the introduction of the above substances. The pilot exper ience has been gained on facilitation of afferent current passage from the sciatic nerve under conditions of intraosteal receptor irritation as well as on inhibition of the above effect under anesthetic block o f intraosteal receptors. Basing on the above findings, the authors exp lain osteogenic mechanism of radiculopathy and pathogenicity of the in traosteal blocks.