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Acta Neurochirurgica
Published in: Acta Neurochirurgica 11/2017

01-11-2017 | Letter to the Editor (by Invitation) - Neurosurgical Anatomy

Petrobasilar, petroclival, or petrosphenoidal canal of the abducens nerve

Authors: Gianfranco Pizzolorusso, Andrea Cirotti, Felice Pizzolorusso

Published in: Acta Neurochirurgica | Issue 11/2017

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Excerpt

In the recently published case report entitled Anatomic variation of the abducens nerve in a single cadaver dissection: the ”petrobasilar canal” we described the exceptional course of the abducens nerve, cranial nerve VI (CNVI) [5]. Generally, CNVI exits the pontomedullary sulcus as a single trunk, ascending in a rostral and lateral direction to reach the petrous apex. At the petrous apex the nerve pierces the visceral dura, passing over the temporal bone and below the dural sheath of the petrosphenoidal ligament in most cases, with the exception that a branch of a duplicated CNVI or the nerve itself can course above the ligament [1‐4]. …
Literature
1.
Destrieux C, Velut S, Kakou MK, Lefrancq T, Arbeille B, Santini JJ (1997) A new concept in Dorello’s canal microanatomy: the petroclival venous confluence. J Neurosurg 87(1):67–72CrossRefPubMed
2.
3.
Nathan H, Ouaknine G, Kosary IZ (1974) The abducens nerve: anatomical variations in its course. J Neurosurg 41(5):561–566CrossRefPubMed
4.
Özveren MF, Sam B, Akdemir I, Alkan A, Tekdemir I, Deda H (2003) Duplication of the abducens nerve at the petroclival region: an anatomic study. Neurosurgery 52(3):645–652CrossRefPubMed
5.
Pizzolorusso F, Cirotti A, Pizzolorusso G (2017) Anatomic variation of the abducens nerve in a single cadaver dissection: the “petrobasilar canal”. Acta Neurochir 159(4):677–680CrossRefPubMed
6.
Wegner R (1920) Das ligamentum spheno-petrosum grtjber= abducensbriicke und homologe gebilde. Anat Anz 53:161–175
Metadata
Title
Petrobasilar, petroclival, or petrosphenoidal canal of the abducens nerve
Authors
Gianfranco Pizzolorusso
Andrea Cirotti
Felice Pizzolorusso
Publication date
01-11-2017
Publisher
Springer Vienna
Published in
Acta Neurochirurgica / Issue 11/2017
Print ISSN: 0001-6268
Electronic ISSN: 0942-0940
DOI
https://doi.org/10.1007/s00701-017-3327-5

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