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Acta Neurochir (Wien). 2017 Apr;159(4):677-680. doi: 10.1007/s00701-017-3096-1. Epub 2017 Jan 31.

Anatomic variation of the abducens nerve in a single cadaver dissection: the "petrobasilar canal".

Author information

1
Research Department, Accademia di Osteopatia e Anatomia (A.O.A.), Via Martiri della Loggia 31, 76123, Andria BT, Italy.
2
Research Department, Accademia Italiana Osteopatia Tradizionale - Marche (A.I.O.T. Marche), Via Einaudi 108, 62012, Civitanoma Marche MC, Italy.
3
Research Department, Accademia di Osteopatia e Anatomia (A.O.A.), Via Martiri della Loggia 31, 76123, Andria BT, Italy. gianfranco.pizzolorusso@gmail.com.
4
Research Department, Accademia Italiana Osteopatia Tradizionale - Marche (A.I.O.T. Marche), Via Einaudi 108, 62012, Civitanoma Marche MC, Italy. gianfranco.pizzolorusso@gmail.com.
5
, Via Isonzo 16, 66100, Chieti CH, Italy. gianfranco.pizzolorusso@gmail.com.

Abstract

Anatomic variations of the petrosphenoid ligament, Dorello's canal and the course of the abducens nerve have been extensively described over the past years. In the present report of a single cadaver dissection, we describe an unusual course of the abducens nerve at the level of the petrous bone. The right abducens nerve did not enter Dorello's canal, but ran below the petrous bone through a narrow canal in the petrobasilar suture, which we called the "petrobasilar canal". No anatomic variations of the left abducens nerve were noted.

KEYWORDS:

Abducens nerve; Anatomic variations; Cranial nerve; Dorello’s canal; Petrosphenoid ligament

PMID:
28144774
DOI:
10.1007/s00701-017-3096-1
[Indexed for MEDLINE]

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