Cargando…
The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures
Introduction: Sheet plastination has provided evidence that the posterior atlantooccipital membrane attaches to the dura’s posterior sleeve at the cerebrospinal junction. These findings contradict the traditional anatomical description of this membrane extending from the atlas’ posterior arch to the...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Cureus
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9170425/ https://www.ncbi.nlm.nih.gov/pubmed/35686279 http://dx.doi.org/10.7759/cureus.25484 |
_version_ | 1784721422688452608 |
---|---|
author | Scali, Frank Ohno, Ai Enix, Dennis Hassan, Sherif |
author_facet | Scali, Frank Ohno, Ai Enix, Dennis Hassan, Sherif |
author_sort | Scali, Frank |
collection | PubMed |
description | Introduction: Sheet plastination has provided evidence that the posterior atlantooccipital membrane attaches to the dura’s posterior sleeve at the cerebrospinal junction. These findings contradict the traditional anatomical description of this membrane extending from the atlas’ posterior arch to the foramen magnum. Methods: A total of 16 plastinated cadavers were studied to evaluate the in situ and gross configuration of the posterior atlantooccipital membrane. Fifteen cadavers underwent sheet plastination, and one head was hemisected and plastinated. In all specimens, stereomicroscopy was used to evaluate the posterior atlantooccipital membrane and related structures within the intervertebral and epidural spaces. Results: In all 16 specimens, the posterior atlantooccipital membrane extending from the occiput, merged with the craniocervical dura mater, and formed a membrane-dura complex that ended at the level of the third cervical vertebra. The superior and inferior myodural bridge coalesced with their respective vertebrodural ligaments and fused with the posterior atlantooccipital membrane at their respective interspaces. Conclusion: The median aspect of the posterior atlantooccipital membrane does not directly communicate with the posterior arch of the atlas. Instead, the posterior atlantooccipital membrane converges with the craniocervical dura mater and terminates at the level of the third cervical vertebra. This membrane-dura complex serves as a common attachment site for the myodural and vertebrodural structures. |
format | Online Article Text |
id | pubmed-9170425 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Cureus |
record_format | MEDLINE/PubMed |
spelling | pubmed-91704252022-06-08 The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures Scali, Frank Ohno, Ai Enix, Dennis Hassan, Sherif Cureus Neurology Introduction: Sheet plastination has provided evidence that the posterior atlantooccipital membrane attaches to the dura’s posterior sleeve at the cerebrospinal junction. These findings contradict the traditional anatomical description of this membrane extending from the atlas’ posterior arch to the foramen magnum. Methods: A total of 16 plastinated cadavers were studied to evaluate the in situ and gross configuration of the posterior atlantooccipital membrane. Fifteen cadavers underwent sheet plastination, and one head was hemisected and plastinated. In all specimens, stereomicroscopy was used to evaluate the posterior atlantooccipital membrane and related structures within the intervertebral and epidural spaces. Results: In all 16 specimens, the posterior atlantooccipital membrane extending from the occiput, merged with the craniocervical dura mater, and formed a membrane-dura complex that ended at the level of the third cervical vertebra. The superior and inferior myodural bridge coalesced with their respective vertebrodural ligaments and fused with the posterior atlantooccipital membrane at their respective interspaces. Conclusion: The median aspect of the posterior atlantooccipital membrane does not directly communicate with the posterior arch of the atlas. Instead, the posterior atlantooccipital membrane converges with the craniocervical dura mater and terminates at the level of the third cervical vertebra. This membrane-dura complex serves as a common attachment site for the myodural and vertebrodural structures. Cureus 2022-05-30 /pmc/articles/PMC9170425/ /pubmed/35686279 http://dx.doi.org/10.7759/cureus.25484 Text en Copyright © 2022, Scali et al. https://creativecommons.org/licenses/by/3.0/This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Neurology Scali, Frank Ohno, Ai Enix, Dennis Hassan, Sherif The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title | The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title_full | The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title_fullStr | The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title_full_unstemmed | The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title_short | The Posterior Atlantooccipital Membrane: The Anchor for the Myodural Bridge and Meningovertebral Structures |
title_sort | posterior atlantooccipital membrane: the anchor for the myodural bridge and meningovertebral structures |
topic | Neurology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9170425/ https://www.ncbi.nlm.nih.gov/pubmed/35686279 http://dx.doi.org/10.7759/cureus.25484 |
work_keys_str_mv | AT scalifrank theposterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT ohnoai theposterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT enixdennis theposterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT hassansherif theposterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT scalifrank posterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT ohnoai posterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT enixdennis posterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures AT hassansherif posterioratlantooccipitalmembranetheanchorforthemyoduralbridgeandmeningovertebralstructures |