Spinal subdural space

Last revised by Dr Yair Glick on 27 Jun 2022

The spinal subdural space is a potential area between the spinal arachnoid mater and the spinal dura mater.

Unlike the cranial subdural space, the spinal subdural space does not contain any bridging veins, and thus hemorrhage into this area only occurs in very rare cases 1.  It only contains a minute quantity of CSF and is traversed by isolated connective tissue trabeculae.2

In rare cases, the spinal subdural space serves as a site for infection.3 

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