PMID: 9558009Apr 29, 1998Paper

Relationship between muscle abnormalities and symptom duration in lumbosacral radiculopathies

American Journal of Physical Medicine & Rehabilitation
T R DillinghamT D Lauder

Abstract

A long held notion in the electrodiagnostic literature is that paraspinal muscles tend to show electromyographic abnormalities early on in a lumbosacral radiculopathy and that more distal muscles become abnormal later in the disease process. The purpose of this study was to determine whether paraspinal muscles and other major proximal and distal muscle abnormalities are related to lumbosacral radiculopathy symptom duration. A multivariate logit analysis of 139 patients (retrospectively identified) with electrodiagnostically confirmed lumbosacral radiculopathies was used to test these hypotheses. Maximum likelihood estimates showed no evidence of correlation between abnormal paraspinal muscles and symptom duration. Symptom duration was also insignificant for the remaining five lower limb muscles analyzed. We conclude that the probability of having electromyographic abnormalities is not related to symptom duration. A prospective study is needed to confirm these findings. Nonetheless, clinicians should use caution when interpreting electrodiagnostic findings based on symptom duration.

Citations

Mar 26, 2013·PM & R : the Journal of Injury, Function, and Rehabilitation·Timothy R Dillingham
Nov 28, 2012·Physical Medicine and Rehabilitation Clinics of North America·Karen Barr
Mar 18, 2000·Archives of Physical Medicine and Rehabilitation·W S Pease
Oct 17, 2002·Physical Medicine and Rehabilitation Clinics of North America·Timothy R Dillingham
Apr 24, 2012·Journal of Clinical Neurology·Yong Seo KooByung-Jo Kim
Jun 24, 2005·American Journal of Physical Medicine & Rehabilitation·Jason S LipetzJeff S Silber

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