European Journal of Anatomy

Official Journal of The Spanish Society of Anatomy
Cover Volume 22 - Number 1
Eur J Anat, 22 (1): 17-22 (2018)

Foramen Venosum in macerated skulls from the North-East of Brazil: morphometric study

José Jailson Costa do Nascimento1, Eulâmpio José da Silva Neto1, Elayne Cristina de Oliveira Ribeiro1, Maurus Marques de Almeida Holanda2, Marcelo Morais Valença3, Louisie Dayane Oliveira Gomes1, Nilton Alves4

1Department of Morphology, Universidade Federal da Paraíba, Paraíba, Brazil, 2Medical Science Center, Universidade Federal da Paraíba, Paraíba, Brazil, 3Postgraduate Program in Neuropsychiatry, Universidade Federal de Pernambuco, Pernambuco, Brazil, 4Applied Morphology Research Centre (CIMA), Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile

ABSTRACT The foramen venosum (FV) is a small, inconstant orifice in the middle cranial fossa, located anterior and medial to the foramen ovale (FO). The object of the present study was to analyse the frequency of the FV, its side of appearance, diameter and distance from the FO, in macerated skulls of adult Brazilians from the north-eastern region of Brazil. 194 macerated skulls were analysed. The diameter of the FV and its distance from the FO (FV-FO) were measured with a digital calliper. The FV was present in 18.5% of the skulls. Unilateral presence (12.4%) was more frequent than bilateral (6.1%). When unilateral, the FV was more frequent on the left side (9.3%) than the right (3.1%). We observed asymmetry in the size of the FV, which was larger on the left side (p=0.043). No statistically significant difference was observed between sides for FV-FO, however this distance was significantly greater in women than in men (p=0.006). The FV is an important anatomical variation, and may occur bilaterally or unilaterally. It is asymmetrical, with larger diameter found on the left side. The findings of this study provide important information for surgeons and morphologists on the anatomy of the middle cranial fossa.

Keywords: Foramen venosum – Foramen ovale – Foramen of Vesalius – Macerated skulls – Morphometry

European Journal of anatomy
ISSN 2340-311X (Online)