Document Detail

Polysegmental innervation of the medial paraspinal lumbar muscles.
MedLine Citation:
PMID:  17972114     Owner:  NLM     Status:  MEDLINE    
A retrospective analysis was performed in a nine month period of the electrophysiological data, imaging and clinical findings of patients with monoradicular disc herniation compressing either the L5 or the S1 nerve root. The primary purpose of the analysis was to determine the distribution of pathological spontaneous activity in the medial paraspinal muscles on electromyographic examination in monoradicular L5 and S1 nerve root compression syndromes. Anatomically, the medial paraspinal muscles receive their innervation from a single root while the iliocostalis muscles and the longissimus muscle are thought to be innervated by multiple nerve roots. In the analysis, in single nerve root lesion of the L5 or S1 nerve root, electromyography of the medial paraspinal muscles revealed pathological spontaneous activity one to three vertebrae cranial to the disc herniation with extension to the opposite side of the lesion. In conclusion, the medial paraspinal muscles might be thought to be innervated by one single nerve root on anatomical studies, electrophysiologically the extension of axonal lesion signs of one single lumbar nerve root is much broader. The widespread distribution of the L5 and S1 nerve root must be taken into consideration on electromyographic examination of the medial paraspinal muscles.
Michael Kottlors; Franz Xaver Glocker
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Publication Detail:
Type:  Journal Article     Date:  2007-10-31
Journal Detail:
Title:  European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society     Volume:  17     ISSN:  1432-0932     ISO Abbreviation:  Eur Spine J     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-02-01     Completed Date:  2008-03-19     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  9301980     Medline TA:  Eur Spine J     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  300-6     Citation Subset:  IM    
Clinic for Rheumatology, Spinal Disorders and Neuromuscular Diseases, Mediclin Seidel-Klinik, Hebelweg 4, 79435, Bad Bellingen, Germany.
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MeSH Terms
Aged, 80 and over
Lumbar Vertebrae*
Middle Aged
Muscle, Skeletal / innervation*
Musculoskeletal Physiological Phenomena
Radiculopathy / pathology,  physiopathology
Retrospective Studies
Spinal Nerve Roots / pathology*,  physiopathology

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