Electrophysiologic evaluation of lumbosacral radiculopathies: Electromyography, late responses, and somatosensory evoked potentials

Michael J. Aminoff, Douglas S. Goodin, Gareth J. Parry, Nicholas M. Barbaro, Philip R. Weinstein, Mark L. Rosenblum

Research output: Contribution to journalArticle

156 Scopus citations

Abstract

We compared the diagnostic utility of EMG, F wave and H-reflex studies, and peroneal and dermatomal SEPs in evaluating 28 patients with clinically unequivocal L-5 or S-1 compressive root lesions. The single most useful electrophysiologic technique was EMG, which often provided evidence of denervation in a myotomal pattern when other electrophysiologic findings were normal. We found abnormal late responses in 14 patients, but always in association with EMG abnormalities. Peroneal-derived SEPs were always normal. Dermatomal SEPs confirmed the diagnosis in seven patients, including two in whom other electrophysiologic studies were normal.

Original languageEnglish (US)
Pages (from-to)1514-1518
Number of pages5
JournalNeurology
Volume35
Issue number10
StatePublished - Oct 1985

ASJC Scopus subject areas

  • Clinical Neurology

Fingerprint Dive into the research topics of 'Electrophysiologic evaluation of lumbosacral radiculopathies: Electromyography, late responses, and somatosensory evoked potentials'. Together they form a unique fingerprint.

  • Cite this

    Aminoff, M. J., Goodin, D. S., Parry, G. J., Barbaro, N. M., Weinstein, P. R., & Rosenblum, M. L. (1985). Electrophysiologic evaluation of lumbosacral radiculopathies: Electromyography, late responses, and somatosensory evoked potentials. Neurology, 35(10), 1514-1518.