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Anatomical and experimental studies of nerve root infiltration
Nihon Seikeigeka Gakkai Zasshi
|July 1, 1982
Summary
Selective nerve root infiltration is possible due to the epiradicular sheath, a structure surrounding nerve roots. This anatomical finding supports its use when localizing pain sources is difficult.
Area of Science:
- Anatomy
- Interventional Pain Management
- Spinal Procedures
Background:
- Cervical and lumbar nerve root infiltration is a diagnostic tool when pain localization is unclear.
- Understanding the anatomical basis is crucial for refining this technique.
Purpose of the Study:
- To investigate the morphological basis of selective cervical and lumbar nerve root infiltration.
- To identify anatomical structures enabling precise contrast or anesthetic delivery.
Main Methods:
- Anatomical dissection and experimental epidurography were performed on canine and human cadavers.
- Studies focused on the spinal canal, epidural membrane, and epiradicular sheath.
Main Results:
- The epiradicular sheath, formed by the posterior longitudinal ligament and epidural membrane, envelops nerve roots.
- Epidurography showed contrast material between the dura and epidural membrane.
- Nerve root infiltration demonstrated contrast spread under the epiradicular sheath.
Conclusions:
- The epiradicular sheath facilitates selective nerve root infiltration.
- This sheath is responsible for the targeted, tubular spread of contrast material around nerve roots.