Development of ossification in the vertical semicircular canals: tomographic study

Cisneros, A.I. (Universidad de Zaragoza) ; Herreros, M. ; Obón, J. (Universidad de Zaragoza) ; Whyte, J. (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.1007/s00276-018-2053-x

Año: 2018

Publicado en: SURGICAL AND RADIOLOGIC ANATOMY 40, 10 (2018), 1093-1098
ISSN: 0930-1038

Factor impacto JCR: 1.039 (2018)

Categ. JCR: ANATOMY & MORPHOLOGY rank: 16 / 21 = 0.762 (2018) - Q4 - T3
Categ. JCR: SURGERY rank: 164 / 203 = 0.808 (2018) - Q4 - T3
Categ. JCR: RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING rank: 112 / 129 = 0.868 (2018) - Q4 - T3

Factor impacto SCIMAGO: 0.445 - Anatomy (Q2) - Surgery (Q2) - Radiology, Nuclear Medicine and Imaging (Q2) - Pathology and Forensic Medicine (Q2)

Tipo y forma: Article (Published version)

Área (Departamento): Area Anatom.Embriol.Humana (Dpto. Anatom.Histolog.Humanas)