pterional craniotomy
Pronunciation: ter-EE-oh-nal
A specific surgical approach involving a bone flap centered around the pterion to access the anterior circulation and skull base.
Full Definition
The pterional craniotomy is a fundamental neurosurgical approach that provides excellent exposure to the anterior circulation, including the internal carotid artery, middle cerebral artery, and anterior communicating artery complex. Named after the pterion (the junction of frontal, parietal, temporal, and sphenoid bones), this approach involves creating a bone flap that extends from the frontal region to the temporal region. The technique allows for minimal brain retraction while providing wide access to aneurysms, tumors, and other pathology in the supratentorial space. The approach is particularly favored for clipping anterior circulation aneurysms and resecting tumors of the sphenoid wing and parasellar region.
Usage
Usage note: Should be capitalized when referring to the specific anatomical location of the pterion.
In Context
- "A left pterional craniotomy was performed to access the ruptured anterior communicating artery aneurysm." — Operative report
- "The pterional craniotomy offers optimal visualization of the Circle of Willis with minimal brain retraction." — Surgical technique manual