Morphometric analysis of the internal auditory canal and its clinical-surgical implications
DOI:
https://doi.org/10.56102/afmo.2024.352Keywords:
Anatomy, Anthropometry, Ear canal, Temporal boneAbstract
Introduction: The internal auditory canal (IAC) is a short and narrow bone canal close to some bone openings, such as the jugular foramen, allowing the passage of important structures. Objective: To assess the morphometric measures of the IAC in human skulls, analyse its microanatomy, and elucidate clinical-surgical implications associated with this canal. Methods: This cross-sectional, descriptive, and comparative study analysed 30 human skulls regardless of sex, age, or ancestry. Statistical analysis was conducted using SPSS software. Results: The vertical diameter of the IAC was 3.5 ± 0.92 mm in the right antimere (RA) and 3.7 ± 0.92 mm in the left antimere (LA), while the horizontal diameter was 4.8 ± 1.01 mm in the RA and 4.6 ± 1.20 mm in the LA. The upper length of the IAC was 10.3 ± 1.76 mm in the RA and 10.40 ± 1.56 mm in the LA, while the lower length was 9.1 ± 1.72 mm in the RA and 9.6 ± 1.54 mm in the LA. Conclusions: The right and left antimeres showed significant differences in three specific variables: upper length of the IAC, distance from the lateral or external edge of the IAC to the groove of the sigmoid sinus, and distance from the lateral or external edge of the IAC to the external opening of the vestibular aqueduct.
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Copyright (c) 2024 Fernando Augusto Pacífico, Bárbara Belijane Adriano Leonel, Bruno Peixoto Gonçalves, Juliana Natalie Rodrigues Marques, Darllan Rocha Barros, Thiago José Monteiro Borges da Silva Valente, Ismael Felipe Gonçalves Galvão
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