Standard Orbitozygomatic Craniotomy versus Mini Orbitozygomatic Craniotomy via an Eyebrow Incision for Microsurgical Treatment of Anterior Communicating Artery Aneurysms

Abstract

Background Skull base approaches are utilized to improve microsurgical treatment of cerebral aneurysms. Advantages include early proximal and distal control, increased visualization, and minimal brain retraction. Orbitozygomatic (OZ) craniotomies via pterional incision are commonly used for the treatment of anterior communicating artery (ACoA) aneurysms. A smaller, less invasive OZ craniotomy performed through an eyebrow incision may provide several advantages over a standard OZ approach.

Objective We compare surgical outcomes of the standard and eyebrow OZ for the treatment of ACoA aneurysms.

Design All patients who underwent microsurgical treatment for ACoA aneurysms by a single surgeon over an 8-year period were included in this retrospective analysis. Patient demographics and clinical data were collected.

Participants Thirty-seven consecutive patients were identified, with 15 receiving eyebrow OZ and 22 receiving standard OZ.

Main Outcome Measures Data were collected on patient demographics, pathology, intraoperative and perioperative data, and 30-day morbidity.

Results A total of 100% of the eyebrow OZ group and 95.5% of the standard OZ group had complete aneurysmal occlusion. Four eyebrow OZ and six standard OZ patients had an intraoperative rupture. All were managed without complication. Two eyebrow OZ and one standard OZ patient died within 30 days of surgery. No patients in either group had aneurysm recurrence, required retreatment, or were limited intraoperatively by exposure.

Conclusions The OZ approach via an eyebrow incision has similar outcomes to a standard OZ approach and is a safe option for the treatment of ACoA aneurysms.

Keywords

eyebrow craniotomy - orbitozygomatic craniotomy - supraorbital craniotomy - cerebral aneurysm - intracranial aneurysm - anterior communicating artery aneurysm - microsurgical clipping

Ethics Approval and Consent to Participate

This retrospective chart review involving human patients was under the ethical standards established by the 1964 Helsinki Declaration. Institutional Review Board approval at the Atrium Health Carolinas Medical Center Hospital was obtained. Written informed consent by the patients was deemed not applicable since there was no information of the participants in the article that compromise anonymity.

Publikationsverlauf

Eingereicht: 22. November 2022

Angenommen: 27. März 2023

Accepted Manuscript online:
29. März 2023

Artikel online veröffentlicht:
18. April 2023

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