RELIEF OF PAIN AND PARAESTHESIAE BY NERVE BLOCK DISTAL TO A LESION

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Abstract
Blocking the afferent pathway distal to the lesion stopped pain or paresthesias in 8 patients studied. The location of the lesions varied from spinal roots, posterior root entry zone and posterior horn to the fasciculus cuneatus and spinothalamic tract. The treatment was based on the theory that impulses from the periphery are altered by the lesion and make connections with fibers whose central connections in the brain produce pain and paresthesias. Another suggestion, deemed unlikely by the authors, is that the blocking agent had spread to the site of the lesion. A last possibility is that the central nervous system, presumably the spinal cord, is influenced by blocking the impulses peripherally.

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