Internal auditory canal: Pre- and postnatal growth

Internal auditory canal: Pre- and postnatal growth

Author Bonaldi, Lais Vieira Autor UNIFESP Google Scholar
Lago, Aline do Autor UNIFESP Google Scholar
Crema, Luciana C. Autor UNIFESP Google Scholar
Fukuda, Yotaka Autor UNIFESP Google Scholar
Smith, Ricardo Luiz Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Objective: the purpose of this study was to describe the size and shape of the internal auditory canal (IAC) during development.Study Design: the study was conducted in 98 dried temporal bones from 7-month-old fetuses to adults. Silicone mould casts of the IAC were used.Methods: the length of the IAC was measured on the moulds corresponding four walls as the diameter on the fundus, middle portion, and porus.Results: Although size and shape vary considerably among individuals, the data showed no significant differences between the right and left sides of the same individual. the values of the wall length and porus diameter increase as a function of age, especially for the upper wall and horizontal diameter. Both middle portion diameters suffer variations at different ages, increasing and decreasing until reaching the final shape. the diameter of the fundus, near the inner ear, remains stable.Conclusions: Our results showed that during development, the shape of the IAC adapts to cranial growth, with those of adults and fetuses having a similar shape but different dimensions, which was quite evident near the porus.
Keywords development
internal auditory canal
temporal bone
Language English
Date 2004-08-01
Published in Journal of Otolaryngology. Hamilton: B C Decker Inc, v. 33, n. 4, p. 243-247, 2004.
ISSN 0381-6605 (Sherpa/Romeo, impact factor)
Publisher B C Decker Inc
Extent 243-247
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000226985200006

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