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Chapter 12 - Spinal Nerve Roots

Published online by Cambridge University Press:  27 July 2023

Robert Laureno
Robert Laureno
Affiliation:
Georgetown University, Washington DC
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Summary

Principles of anatomy relevant to radiculopathy are discussed. Spondylotic pathology is proximal to the dorsal root ganglia (DRG). As a result DRG axons to the periphery are unaffected. This topography means that sensory radicular symptoms are unaccompanied by abnormality on sensory nerve conduction studies. Due to regional differences in the angulation of the intervertebral foramina, sagittal MRI images are better for demonstrating foraminal stenosis in the lumbar than in the cervical region. Myotomes and dermatomes vary between individuals.

Keywords

radiculopathyspinal nerve rootssensory nerve conductiondermatomemyotomespinal MRIforaminal stenosis
Type
Chapter
Information
Insights into Clinical Neurology , pp. 63 - 65
Publisher: Cambridge University Press
Print publication year: 2023

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References

Campbell, W. W., Barohn, R. J.. DeJong’s The Neurologic Examination. Philadelphia, Wolters Kluwer, 2019.Google Scholar
Thage, O.. The myotomes L2–S2 in man. Acta Neurol Scand Suppl 1965; 13: 241–243.Google ScholarPubMed
Inouye, Y., Buchthal, F.. Segmental sensory innervation determined by potentials recorded from cervical spinal nerves. Brain 1977; 100: 731–748.CrossRefGoogle ScholarPubMed
Sherrington, C. S.. Experiments in examination of the peripheral distribution of the fibres of the posterior roots of some spinal nerves. Philos Trans R Soc London B Part I 1893; 184: 641–763, Part II 1898: 190: 45–186.Google Scholar
Foerster, O.. The dermatomes in man. Brain 1933; 56: 1–39.CrossRefGoogle Scholar

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  • Spinal Nerve Roots
  • Robert Laureno, Georgetown University, Washington DC
  • Book: Insights into Clinical Neurology
  • Online publication: 27 July 2023
  • Chapter DOI: https://doi.org/10.1017/9781009234986.013
Available formats
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  • Spinal Nerve Roots
  • Robert Laureno, Georgetown University, Washington DC
  • Book: Insights into Clinical Neurology
  • Online publication: 27 July 2023
  • Chapter DOI: https://doi.org/10.1017/9781009234986.013
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Spinal Nerve Roots
  • Robert Laureno, Georgetown University, Washington DC
  • Book: Insights into Clinical Neurology
  • Online publication: 27 July 2023
  • Chapter DOI: https://doi.org/10.1017/9781009234986.013
Available formats
×