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Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches

Anatomic knowledge of the internal auditory canal (IAC) and surrounding structures is a prerequisite for performing skull base approaches to the IAC. We herein perform a morphometric analysis of the IAC and surgically relevant aspects of the posterior petrous bone during pediatric maturation, a regi...

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Autores principales: Rennert, Robert C., Brandel, Michael G., Steinberg, Jeffrey A., Friedman, Rick A., Couldwell, William T., Fukushima, Takanori, Day, John D., Khalessi, Alexander A., Levy, Michael L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8894491/
https://www.ncbi.nlm.nih.gov/pubmed/35241717
http://dx.doi.org/10.1038/s41598-022-07343-9
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author Rennert, Robert C.
Brandel, Michael G.
Steinberg, Jeffrey A.
Friedman, Rick A.
Couldwell, William T.
Fukushima, Takanori
Day, John D.
Khalessi, Alexander A.
Levy, Michael L.
author_facet Rennert, Robert C.
Brandel, Michael G.
Steinberg, Jeffrey A.
Friedman, Rick A.
Couldwell, William T.
Fukushima, Takanori
Day, John D.
Khalessi, Alexander A.
Levy, Michael L.
author_sort Rennert, Robert C.
collection PubMed
description Anatomic knowledge of the internal auditory canal (IAC) and surrounding structures is a prerequisite for performing skull base approaches to the IAC. We herein perform a morphometric analysis of the IAC and surgically relevant aspects of the posterior petrous bone during pediatric maturation, a region well-studied in adults but not children. Measurements of IAC length (IAC-L), porus (IAC-D) and midpoint (IAC-DM) diameter, and distance from the porus to the common crus (CC; P-CC) and posterior petrosal surface (PPS) to the posterior semicircular canal (PSC; PPS-PSC) were made on thin-cut axial CT scans from 60 patients (grouped by ages 0–3, 4–7, 8–11 12–15, 16–18, and > 18 years). IAC-L increased 27.5% from 8.7 ± 1.1 at age 0–3 to 11.1 ± 1.1 mm at adulthood (p = 0.001), with the majority of growth occurring by ages 8–11. IAC-D (p = 0.52) and IAC-DM (p = 0.167) did not significantly change from ages 0–3 to adult. P-CC increased 31.1% from 7.7 ± 1.5 at age 0–3 to 10.1 ± 1.5 mm at adulthood (p = 0.019). PPS-PSC increased 160% from 1.5 ± 0.7 at age 0–3 to 3.9 ± 1.2 mm at adulthood (p < 0.001). The majority of growth in P-CC and PPS-PSC occurred by ages 12–15. Knowledge of these patterns may facilitate safe exposure of the IAC in children.
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spelling pubmed-88944912022-03-07 Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches Rennert, Robert C. Brandel, Michael G. Steinberg, Jeffrey A. Friedman, Rick A. Couldwell, William T. Fukushima, Takanori Day, John D. Khalessi, Alexander A. Levy, Michael L. Sci Rep Article Anatomic knowledge of the internal auditory canal (IAC) and surrounding structures is a prerequisite for performing skull base approaches to the IAC. We herein perform a morphometric analysis of the IAC and surgically relevant aspects of the posterior petrous bone during pediatric maturation, a region well-studied in adults but not children. Measurements of IAC length (IAC-L), porus (IAC-D) and midpoint (IAC-DM) diameter, and distance from the porus to the common crus (CC; P-CC) and posterior petrosal surface (PPS) to the posterior semicircular canal (PSC; PPS-PSC) were made on thin-cut axial CT scans from 60 patients (grouped by ages 0–3, 4–7, 8–11 12–15, 16–18, and > 18 years). IAC-L increased 27.5% from 8.7 ± 1.1 at age 0–3 to 11.1 ± 1.1 mm at adulthood (p = 0.001), with the majority of growth occurring by ages 8–11. IAC-D (p = 0.52) and IAC-DM (p = 0.167) did not significantly change from ages 0–3 to adult. P-CC increased 31.1% from 7.7 ± 1.5 at age 0–3 to 10.1 ± 1.5 mm at adulthood (p = 0.019). PPS-PSC increased 160% from 1.5 ± 0.7 at age 0–3 to 3.9 ± 1.2 mm at adulthood (p < 0.001). The majority of growth in P-CC and PPS-PSC occurred by ages 12–15. Knowledge of these patterns may facilitate safe exposure of the IAC in children. Nature Publishing Group UK 2022-03-03 /pmc/articles/PMC8894491/ /pubmed/35241717 http://dx.doi.org/10.1038/s41598-022-07343-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Rennert, Robert C.
Brandel, Michael G.
Steinberg, Jeffrey A.
Friedman, Rick A.
Couldwell, William T.
Fukushima, Takanori
Day, John D.
Khalessi, Alexander A.
Levy, Michael L.
Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title_full Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title_fullStr Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title_full_unstemmed Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title_short Maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
title_sort maturation of the internal auditory canal and posterior petrous bone with relevance to lateral and posterolateral skull base approaches
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8894491/
https://www.ncbi.nlm.nih.gov/pubmed/35241717
http://dx.doi.org/10.1038/s41598-022-07343-9
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