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Δευτέρα 7 Δεκεμβρίου 2020

Extradural Anterior Clinoidectomy through the Extended Eyebrow Approach: Proof of Concept.

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Extradural Anterior Clinoidectomy through the Extended Eyebrow Approach: Proof of Concept.

Neurochirurgie. 2020 Dec 03;:

Authors: Martínez-Pérez R, Hardesty D, Prevedello DM

Abstract
INTRODUCTION: Extradural anterior clinoidectomy (eAC) is key to expose the paraclinoid region. Several authors have pointed limitations of performing an eAC through a supraorbital craniotomy. In this article, we aim to provide educational material and discuss the technical nuances to successfully perform an eAC throughout a modification of the supraorbital approach, the extradural extended eyebrow approach (xEBA + eAC).
METHODS: Four embalmed heads were used for anatomic dissection and perform the xEBA + eAC. Additionally, one head was used for a video demonstration of the surgical approach.
RESULTS: The anterior clinoid process was successfully removed, and the ophthalmic artery and paraclinoid region were exposed in all specimens. Drilling the sphenoid wing until exposing the meningo-orbital band and further interdural dissection are vital steps to expose the anterior clinoid process. Removal of the anterior clinoid process can be simplified in 3 osteotomies, including the optic canal unroofing, detachment from the lateral pillar, and drilling of the optic strut. Sectioning of the distal dural ring facilitates the mobilization of the internal carotid artery and the surgical exposure of the ophthalmic artery.
CONCLUSIONS: xEBA + eAC is a technically feasible approach that provides exposure to the paraclinoid region, along with anterior and middle cranial fossa.

PMID: 33279526 [PubMed - as supplied by publisher]

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