Epidural vs. Subdural — What's the Difference?

Located on or over the dura mater.

Located or occurring beneath the dura mater

An injection into the epidural space of the spine.

(anatomy) Located beneath the dura mater and above the arachnoid mater.

Situated on or outside the dura mater.

Ellipsis of subdural hematoma.

Of or pertaining to the space immediately outside the dura mater.

Situated under the dura mater, or between the dura mater and the arachnoid membrane.

(medicine) An injection of anaesthetic into the epidural space of the spine, especially associated with pain relief during childbirth.

Below the dura mater but above the arachnoid membrane of the meninges

Regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery

On or outside the dura mater