open access

Vol 62, No 4 (2003)
ORIGINAL ARTICLES
Published online: 2003-09-05
Submitted: 2012-02-06
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The morphology and morphometry of the so-called "meningo-orbital foramen" in humans

Jan Kwiatkowski, Jarosław Wysocki, Stanisław Nitek
Folia Morphol 2003;62(4):323-325.

open access

Vol 62, No 4 (2003)
ORIGINAL ARTICLES
Published online: 2003-09-05
Submitted: 2012-02-06

Abstract

The so-called meningo-orbital foramen creates an additional link between the orbit and the cranial cavity. This bony canal, not always present in the human skull, contains a branch from the middle meningeal artery, providing an accessory blood supply to the orbit. This vessel, like the foramen, is characterised by great variability. Although older textbooks of basic anatomy suggested that it was a rare occurrence, some current data indicate a more frequent incidence of this foramen. These discrepancies were verified in our research. 92 orbits were studied on 46 macerated human skulls (25 male and 21 female). Although the incidence of the meningo-orbital foramen in the material as a whole was 28%, the foramen in female skulls was observed to be 40.5%, compared to 18% in male skulls. This difference was statistically significant. A double foramen was encountered in three orbits, and in one orbit there was a triple foramen. This means that in the material as a whole multiple foramina were observed in 4% of cases. Two measurements were taken to determine the localisation of the meningo- orbital foramen. The minimal distance between the supraorbital notch (or foramen) and the meningo-orbital foramen was 35.0 (28–44) mm. The minimal distance from the cross-point of the entrance to the orbit and the fronto-zygomatic suture was (21.3-35.5) mm. This indicates that the meningo-orbital foramen can lie near an operating field in some surgical interventions through the lateral orbital wall.

Abstract

The so-called meningo-orbital foramen creates an additional link between the orbit and the cranial cavity. This bony canal, not always present in the human skull, contains a branch from the middle meningeal artery, providing an accessory blood supply to the orbit. This vessel, like the foramen, is characterised by great variability. Although older textbooks of basic anatomy suggested that it was a rare occurrence, some current data indicate a more frequent incidence of this foramen. These discrepancies were verified in our research. 92 orbits were studied on 46 macerated human skulls (25 male and 21 female). Although the incidence of the meningo-orbital foramen in the material as a whole was 28%, the foramen in female skulls was observed to be 40.5%, compared to 18% in male skulls. This difference was statistically significant. A double foramen was encountered in three orbits, and in one orbit there was a triple foramen. This means that in the material as a whole multiple foramina were observed in 4% of cases. Two measurements were taken to determine the localisation of the meningo- orbital foramen. The minimal distance between the supraorbital notch (or foramen) and the meningo-orbital foramen was 35.0 (28–44) mm. The minimal distance from the cross-point of the entrance to the orbit and the fronto-zygomatic suture was (21.3-35.5) mm. This indicates that the meningo-orbital foramen can lie near an operating field in some surgical interventions through the lateral orbital wall.
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Keywords

orbit; anatomy; foramina; dimensions; variability

About this article
Title

The morphology and morphometry of the so-called "meningo-orbital foramen" in humans

Journal

Folia Morphologica

Issue

Vol 62, No 4 (2003)

Pages

323-325

Published online

2003-09-05

Bibliographic record

Folia Morphol 2003;62(4):323-325.

Keywords

orbit
anatomy
foramina
dimensions
variability

Authors

Jan Kwiatkowski
Jarosław Wysocki
Stanisław Nitek

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