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Journal of the Korean Academy of Rehabilitation Medicine 1992;16(4):346-353.
Evaluation of lumbar radiculopathies by radiologic and electrophysiologic technique.
Shin, Jung Bin , Cho, Kyung Gi , Kim, Sung Woo , Chun, Sae Il
Department of Rehabilitation Medicine, Yonsei University College of Medicine, *Departmet of Neurosurgery, Yonsei University College of Medicine
요추부신경근병변의 진단에 있어 방사선 및 전기진단검사소견의 연관성에 대한 검토
신정빈, 조경기*, 김성우, 전세일
연세대학교 의과대학 재활의학교실 및 신경외과학교실*
Abstract

The authors reviewed the diagnostic utility of electrodiagnostic and radiologic data in evaluating 44 patients with lower back pain and radicular symptoms. Electrodiagnostic examination included dermatomal somatosensory evoked potentials of L4, L5, S1 roots stimulating specific sensory nerves. Radiologic examination included the lumbar myelogram and the lumbar spine CT.

Patients were classified into three groups based on their radiological findings: Group 1 had herniated or bulging disc or spinal stenosis with root compression; Group 2 had herniated or bulging disc or spinal stenosis without root compression; Group 3 had normal radiologic findings.

The results were as follows;

1) Electrodiagnostic abnormality rate of the patients in group 1 were 81.8% by needle electromyography and 90.9% by somatosensory evoked potential study.

2) Electrodiagnostic abnormality rate of the patients in group 2 were 58.8% by needle electromyography and 82.4% by somatosensory evoked potential study.

According to the above results, somatosensory evoked potentials are valuable diagnostic tool for the evaluation of radiculopathy, particularly where radiological findings reveal less well-defined evidence for root compression.

Key Words: Lumbar radiculopathy, Diagnosis, Somatosensory evoked potential


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