We studied medial dorsal superficial peroneal (MDSP) nerves in 52 patients wit h clinical evidence of mild chronic sensorimotor polyneuropathy and normal sural nerve responses, in order to assess the diagnostic sensit...We studied medial dorsal superficial peroneal (MDSP) nerves in 52 patients wit h clinical evidence of mild chronic sensorimotor polyneuropathy and normal sural nerve responses, in order to assess the diagnostic sensitivity and usefulness o f MDSP nerve testing in electrodiagnostic practice. To determine the effect of a ge on MDSP nerve parameters, 98 normal subjects were also examined. Electrodiagn ostic evaluation involved studies of motor nerve conduction in tibial, peroneal, and median nerves;sensory nerve conduction in sural, MDSP, median, and radialne rves; tibial and peroneal nerve F waves; H reflexes from the soleus muscles; and needle electromyography of gastrocnemius and abductor hallucis muscles. Among t he patients, 49%had low-amplitude sensory responses in MDSP nerves and 57%had either slowing of sensory conduction velocity or no sensory responseson proxima l stimulation. MDSP nerve amplitude, tibial nerve motor velocity, and H reflexes were the most sensitive for detection of mild chronic symmetrical axonal sensor imotor polyneuropathy. MDSP nerve testing should be included in the routine elec trodiagnostic evaluation of patients with suspected polyneuropathy and normal su ral nerve responses.展开更多
文摘We studied medial dorsal superficial peroneal (MDSP) nerves in 52 patients wit h clinical evidence of mild chronic sensorimotor polyneuropathy and normal sural nerve responses, in order to assess the diagnostic sensitivity and usefulness o f MDSP nerve testing in electrodiagnostic practice. To determine the effect of a ge on MDSP nerve parameters, 98 normal subjects were also examined. Electrodiagn ostic evaluation involved studies of motor nerve conduction in tibial, peroneal, and median nerves;sensory nerve conduction in sural, MDSP, median, and radialne rves; tibial and peroneal nerve F waves; H reflexes from the soleus muscles; and needle electromyography of gastrocnemius and abductor hallucis muscles. Among t he patients, 49%had low-amplitude sensory responses in MDSP nerves and 57%had either slowing of sensory conduction velocity or no sensory responseson proxima l stimulation. MDSP nerve amplitude, tibial nerve motor velocity, and H reflexes were the most sensitive for detection of mild chronic symmetrical axonal sensor imotor polyneuropathy. MDSP nerve testing should be included in the routine elec trodiagnostic evaluation of patients with suspected polyneuropathy and normal su ral nerve responses.
