Understanding Anatomy of the Petrous Pyramid-A New Compartmental Approach

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art_TAWFIK-HELIKA_Understanding_Anatomy_of_the_Petrous_PyramidA_New_Compartmental_2019.PDF (2.34 MB)
Citações na Scopus
3
Tipo de produção
article
Data de publicação
2019
Editora
ELSEVIER SCIENCE INC
DOI
Indexadores
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Autores
TAWFIK-HELIKA, Mamdouh
MERTENS, Patrick
CUSIMANO, Michael D.
CATALA, Martin
KIROLLOS, Ramez
JACQUESSON, Timothee
Autor de Grupo de pesquisa
Editores
Coordenadores
Organizadores
Citação
WORLD NEUROSURGERY, v.124, p.E65-E80, 2019
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
BACKGROUND: Learning surgical anatomy of the petrous pyramid can be a challenge, especially in the beginning of the training process. Providing an easier, holistic approach can be of help to everyone with interest in learning and teaching skull base anatomy. We present the complex organization of petrous pyramid anatomy using a new compartmental approach that is simple to understand and remember. METHODS: The surfaces of the petrous pyramid of two temporal bones were examined; and the contents of the petrous pyramid of 8 temporal bones were exposed through progressive drilling of the superior surface. RESULTS: The petrous pyramid is made up of a bony container, and its contents were grouped into 4 compartments (mucosal, cutaneous, neural, and vascular). Two reference lines were identified (mucosal and external-internal auditory canal lines) intersecting at the level of the middle ear. The localization of contents relative to these reference lines was then described, and 2 methods of segmentation (the X method and the V method) were then proposed. This description was then used to describe middle ear relationships, facial nerve anatomy, and air cell distribution. CONCLUSIONS: This new compartmental approach allows a comprehensive understanding of the distribution of petrous pyramid contents. Dividing it into anatomic compartments, and then navigating this mental map along specific reference points, lines, spaces, and segments, could create a useful tool to teach or learn its complex tridimensional anatomy.
Palavras-chave
Anatomy, Middle ear, Petrous, Pyramid, Segmentation, Space, Temporal bone
URI
https://observatorio.fm.usp.br/handle/OPI/31860
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Coleções
Artigos e Materiais de Revistas Científicas - FM/Outros