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Anatomia Clinica

, Volume 5, Issue 3, pp 141–151 | Cite as

Anatomy of the lumbar radicular canal

  • J. M. Vital
  • B. Lavignolle
  • N. Grenier
  • F. Rouais
  • R. Malgat
  • J. Senegas
Anatomical Bases of Medical and Surgical Techniques

Summary

The radicular canal is defined as the lateral part of the spinal canal containing the spinal nerve root from its point of emergence through the dural envelope up to and including the intervertebral foramen. The radicular canal, resembling a hollow hemicylinder opened towards the midline, can be divided into three parts, i.e. retrodiscal, parapedicular (the lateral recess per se) and foraminal. The different walls of the canal (notably those of the lateral recess) are described. A review of the main types of roentgenographic exploration of the radicular canal are presented based on these anatomical findings. Finally, this static description of the typical lumbar radicular canal and its variations according to the lumbar or sacral level under consideration is followed by a presentation of the modifications which arise in the upright position and during extension and flexion of the lumbar spine.

Key words

Lumbar radicular canal Lateral recess Lumbar root Computerized tomography 

Anatomie du canal radiculaire lombaire

Résumé

Le canal radiculaire est défini comme la portion latérale du canal rachidien dans laquelle circule la racine depuis sa sortie du cul-de-sac dural jusqu'au foramen (ou trou de conjugaison) compris. Cet hémicylindre creux, ouvert vers la ligne médiane, peut être divisé en trois portions: rétrodiscale, parapédiculaire (récessus latéral à proprement parler) et foraminale. Les différentes parois (notamment du récessus latéral) sont décrites. Une revue des principaux moyens d'exploration radiographiques du canal radiculaire normal est au mieux précisée grâce à ces bases anatomiques. Enfin, après cette description statique du canal radiculaire lombaire moyen et de ses variations selon l'étage lombaire ou sacré considéré, les auteurs exposent les modifications entraînées par la mise en charge, l'extension et la flexion du rachis lombaire.

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • J. M. Vital
    • 1
  • B. Lavignolle
    • 1
  • N. Grenier
    • 2
  • F. Rouais
    • 3
  • R. Malgat
    • 2
  • J. Senegas
    • 1
  1. 1.Laboratoire d'Anatomie du Pr. SenegasUniversité Bordeaux IIBordeauxFrance
  2. 2.Service de Neuroradiologie du Pr. CailléTripodeFrance
  3. 3.Laboratoire du Pr DucassouUniversité Bordeaux IIBordeauxFrance

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