Definition

1. Adjective:
   • Situated on or occurring outside the dura mater: The term "extradural" describes something located on the external surface of the dura mater, the tough outermost membrane enveloping the brain and spinal cord. It is primarily used in medical contexts, especially in neurology and anesthesiology.

Usage Examples

• Adjective:
  • The patient underwent an extradural hematoma evacuation. (This describes a blood clot located outside the dura mater.)
  • An extradural injection is administered outside the spinal dura. (This specifies the location of a medical injection.)
  • The scan revealed an extradural lesion. (This indicates a pathological finding situated external to the dura.)

Advanced Usage

• "Extradural space": The potential anatomical space outside the dura mater, often referenced in procedures like epidural anesthesia.

  • The anesthetic was delivered into the extradural space.

• "Extradural hemorrhage/hematoma": A specific type of bleeding that occurs between the skull and the dura mater.

  • A head trauma can cause an acute extradural hemorrhage.

Variants and Related Words

• Epidural (adj/n): A common synonym, especially in clinical practice, often used to describe anesthesia (e.g., an epidural block). While "epidural" and "extradural" are often used interchangeably, "epidural" is more frequent in general medical parlance.
  • She requested an epidural for pain relief during labor.

Synonyms

• Epidural: Located upon or outside the dura mater.
• Peridural: Surrounding the dura mater (less common).

Notes on Meaning

• The term is highly specific to medical anatomy. Its core meaning is strictly anatomical, denoting a position external to the dura mater. It does not have common idiomatic or figurative uses.

Adjective

1. on or outside the dura mater