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KMID : 0361419840080010019
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Journal of Korean Academy of Rehabilitation Medicine
1984 Volume.8 No. 1 p.19 ~ p.25
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Somatosensory Evoked Potentials in the Diagnosis of Lumbar Herniated Disc
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Abstract
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Confirmation of sensory changes in clinical neurologic examination by somatosensoryy evoked potential examination is the main purpose of this article.
Twenty eight patients who were undertaken an operation for herniated lumbar disc were analysed in clinical neurological symptoms, electromyographic findings, operative findings and somatosensory evoked potential findings in superficial peroneal and sural nerve stimulation.
The results were as follows.
1) The latency of somatosensory evoked potential in superfical peroneal and sural nerve of normal Korean subjects were 39.81±1.71 msec, 38.95±1.80 msec, each. 2) The accuracy of level localization in electromyography was 85.7% in this study. .
3) The accuracy of somatosensory evoked potential examination in patients who have sensory symptoms was 82.6%.
4) Two cases among four cases of negative electromyographic finding were positive in somatosensory evoked potential examination and the accuracy was raised to 92.8% with combinations of the electromyography and somatosensory evoked potential examination.
5) The somatosensory evoked potential examination seems be to a good supportive measure
in diagnosis of herniated lumbar disc patients with electromyography, expecially who have sensory change symptoms.
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