extradural

1 9.9

Lies on the outer membrane that covers the brain and spinal cord

adjective
/ˌɛkstrəˈdʊrəl/

: extradural

Erosion of the left lateral mass of the atlas (C1) was seen with extradural and subdural extension into the epidural spinal canal.

Examples

During the procedure, the surgeon carefully navigated the extradural space to minimize damage.
This exposure allows extradural and intradural tumor resection.

Academic text (2008)
In this article, we discuss the non-extended extradural approach through the low temporal craniotomy described by House.

Academic text (2004)
Three months later, the growing tumor had breached the anterior skull base, but it remained extradural.

Academic text (2001)
And if there's blood in that extradural compartments between the cranium and the brain, it's a very easy to detect thing on a non contrast head CT scan.
All appropriate preoperative assessments and planning were conducted, and the patient returned for an extradural tumor biopsy and partial resection via an endonasal transethmoid, transsphenoid approach.

Academic text (2005)
The doctor's examination revealed an extradural hemorrhage affecting the patient's recovery.
An extradural abscess can be found between the skull and the protective membranes around the brain.

Synonyms

epidural

vsextradural

Specialized

6 7.1

On the outside of the tough covering around the spinal cord or brain

has identical meaning but uses an alternative form

How External

extradural

1 9.9

intradural

Specialized

9.9

Surface Forms

extradural positive

Morphology

extradural = dural (transparent) = extra + dural

Regular medical formation: 'extra-' (outside) + 'dural' yields 'located outside the dura mater', so the meaning follows directly from the parts.

Etymology

Extradural starts with extra- meaning 'outside' and includes dura meaning 'tough', as in the word durable. So extradural means 'outside' the brain or spinal cord's tough covering, the dura mater.