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Surgical and Radiologic Anatomy

Published in:

01-10-2018 | Original Article

Development of ossification in the vertical semicircular canals: tomographic study

Authors: Ana Isabel Cisneros, Marta Herreros, Jesús Obón, Jaime Whyte

Published in: Surgical and Radiologic Anatomy | Issue 10/2018

Abstract

Purpose

To describe the ontogeny of vertical semicircular canals using computed tomography.

Materials and methods

We have studied 39 human fetuses aged between 17 and 38 weeks of development through multi-helicoidal CT.

Results

The first signs of ossification in the semicircular canals, superior and posterior, are from 19 weeks of development, through two primary ossification centers in each canal, which will take part in the formation of the outer cover oriented towards the middle and posterior brain fossae, respectively. In this process it must be added the intervention of the common branch. Internal bone covers are formed by ossification of the fossa subarcuata in the superior semicircular canal, and from the compact center of the labyrinthine capsule into the posterior canal. The tomographic study has allowed us to demonstrate how ossification follows a variable rate, establishing a period between 21 and 26 weeks where there are completely closed canals with others still open to the brain fossae.

Conclusions

The tomographic study of the semicircular canals has enabled us to establish a critical period in its ossification that could explain the etiology of the congenital-type dehiscence.

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Title: Development of ossification in the vertical semicircular canals: tomographic study
Authors: Ana Isabel Cisneros
Marta Herreros
Jesús Obón
Jaime Whyte
Publication date: 01-10-2018
Publisher: Springer Paris
Published in: Surgical and Radiologic Anatomy / Issue 10/2018
Print ISSN: 0930-1038
Electronic ISSN: 1279-8517
DOI: https://doi.org/10.1007/s00276-018-2053-x

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Springer Medicine

Development of ossification in the vertical semicircular canals: tomographic study

Abstract

Purpose

Materials and methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusions

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