Cervical paraspinal spontaneous activity in asymptomatic subjects

Muscle & Nerve
Elaine S DateByung Kyu Park

Abstract

Paraspinal fibrillation potentials or positive sharp waves (PSWs) reportedly may be the only electrodiagnostic abnormality in patients with radiculopathies. However, spontaneous activity may be present in muscles of asymptomatic subjects. To determine whether abnormal spontaneous activity in the cervical paraspinal muscles is clinically relevant, we evaluated the prevalence of such activity in asymptomatic individuals and examined its relationship with age. Sixty-six asymptomatic subjects underwent a needle electromyographic examination of the paraspinal muscles bilaterally at the C5/6 and C6/7 levels. All of the recorded potentials were captured and their firing rates and waveforms were evaluated. The potentials were considered to be abnormal if reproducible trains of PSWs or fibrillation potentials were present. Eight of the 66 (12%) subjects showed PSWs, five bilaterally; none showed fibrillation potentials. A statistical analysis for the effect of age could not be performed due to the small sample size. Because electromyographic cervical paraspinal abnormalities can be found in asymptomatic subjects, caution should be exercised when attributing the etiology of neck pain to radiculopathy if the only electrodiagnostic finding...Continue Reading

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Citations

Jun 18, 2009·Amyotrophic Lateral Sclerosis : Official Publication of the World Federation of Neurology Research Group on Motor Neuron Diseases·Mamede de CarvalhoMichael Swash
Nov 28, 2012·Physical Medicine and Rehabilitation Clinics of North America·Kevin Hakimi, David Spanier
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May 22, 2018·PM & R : the Journal of Injury, Function, and Rehabilitation·Ki Hoon KimDong Hwee Kim
Jun 13, 2020·Muscle & Nerve·Tina D JeppesenChristian Krarup

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