Related Experiment Video
Updated: Jun 1, 2026

Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
Published on: August 8, 2025
The retrodural space of Okada
Naveen S Murthy1, Timothy P Maus, Charles Aprill
1Department of Radiology, Mayo Clinic Rochester, 200 First St SW, Charlton 2-290, Rochester, MN 55905, USA. murthy.naveen@mayo.edu
Objective:
The retrodural space of Okada is a potential space that can act as a conduit for the spread of inflammatory or infectious processes, connecting ipsilateral adjacent facet joints, contralateral adjacent facet joints, adjacent neural foramen, paraspinal musculature, and spinous process adventitial bursa (i.e., Baastrup disease).
Conclusion:
Awareness of these potential retrodural communications during diagnostic imaging interpretation and interventional spine injection procedures can play an important role in patient care and management.
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