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Journal of the Korean Academy of Rehabilitation Medicine 1980;4(1):3.
Nerve Conduction Studies in Herniated Nucleus Pulposus (Pilot study)
Yong Pal Ahn, M.D. , Kyoung Hee Park, M.D.
Department of Rehabilitation Medicine, Catholic Medical College, Seoul, Korea
추간판핵 탈출증의 건측, 환측지의 신경전도속도 비교연구(Pilot Study)
안용팔, 박경희
가톨릭의과대학 재활의학과

Herniated Nucleus Pulposus can be diagnosed by clinical findings, myelography, diskography, and Electromyography.

The electromyographic findings include increased insertional activity, increased polyphasic potentials, bizarre high frequency discharges. Fibrillation and positive sharp potentials and characteristic "chugging sound".

Motor and sensory nerve conduction studies in cases of root compression by disc herniation were reported as not impaired in the periphery, and reduced amplitudes of motor nerve action potentials due to axonal degenerations were reported only.

Nerve conduction velocities, amplitudes and durations of motor and sensory nerve action potentials were studied, and the mean values of affected and unaffected extremities were compared in 23 HNP suspected patients, 21 male and 2 female.

The results were as follows:

1. Amplitudes of peroneal motor nerve action potentials were lowered in affected extremities, significantly (p<0.005, Table 1).

2. Conduction velocities of tibial sensory nerves were reduced in affected extremities, significantly (p<0.005, Table 4).

Key Words: Herniated nucleus pulposus, Nerve conduction study, Electromyography, Low back pain


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