[Disorders of conductivity in motor nerve fibers in compressive and traumatic lesions in the ulnar nerve (evaluation using 6 stimulation indices)]

The disordered velocity was reported in motoric neural fibres to have occurred in 50 traumatic ulnar lesions mainly with wrist disorders, and in 69 compressive lesions with maximum disorders on elbow region. Most pronounced were changes localized distally at the portion which included also the velocity on both the motoric plate and muscle. The maximum pathologic changes were detected on the longer portion studied and mainly on motoric neural ulnar fibres in both groups of the forearm due to the lesser value divergence. As to the traumatic lesions, pathologic changes were more expressed and greater in number than those compressive ones.