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J Neurol Surg B Skull Base 2015; 76(03): 214-217
DOI: 10.1055/s-0034-1543973
Original Article
Georg Thieme Verlag KG Stuttgart · New York

Dural Septation on the Inner Surface of the Jugular Foramen: An Anatomical Study

R. Shane Tubbs
1   Department of Pediatric Neurosurgery, Children's Hospital, Birmingham, Alabama, United States
2   Department of Anatomical Sciences, St. George's University, St. George's, Grenada
,
Christoph J. Griessenauer
3   Section of Neurosurgery, University of Alabama, Birmingham, Alabama, United States
,
Muhammad Bilal
3   Section of Neurosurgery, University of Alabama, Birmingham, Alabama, United States
,
Joel Raborn
1   Department of Pediatric Neurosurgery, Children's Hospital, Birmingham, Alabama, United States
,
Marios Loukas
2   Department of Anatomical Sciences, St. George's University, St. George's, Grenada
,
Aaron A. Cohen-Gadol
4   Goodman Campbell Brain and Spine, Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, Indiana, United States
5   Indiana University Simon Cancer Center, Indianapolis, Indiana, United States
› Author Affiliations
Further Information

Publication History

15 September 2014

16 November 2014

Publication Date:
21 January 2015 (online)

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Abstract

Introduction Preserving cranial nerve (CN) function during tumor removal at the jugular foramen is challenging. No anatomical study has better defined the relevant dural septations on the inner surface of the jugular foramen. This study was undertaken to elucidate this anatomy.

Methods Fourteen cadaveric heads (28 sides) were dissected, and relationships of the meningeal coverings of the jugular foramen and adjacent CNs documented. A classification scheme was created to better describe the dural septations of the inner surface of the jugular foramen.

Results Four types of dural septations were noted. Type I: 10 sides (36%) where a dural septation was seen between CNs IX anteriorly and X and XI posteriorly. Of these, the septum was ossified in 20%. Type II (32%) was defined as a jugular foramen with no dural septation. Type III (7%) was defined as septation between CNs IX and X anteriorly and XI posteriorly. Type IV (7 sides, 25%) or the chaotic form was defined as multiple septations within the jugular foramen that housed and divided CN rootlets.

Conclusions The dural septations defined here can be used in future studies to help correlate operative strategy to meningeal morphology within the jugular foramen.

Keywords

skull base - posterior fossa - cranial anatomy - meninges - jugular foramen - anatomy
 

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