Individual features of infra-orbital canal and the same name foramen and inferior orbital fissure

Abstract

In present time, information about the structure of the orbit, its relations with the bordering regions due to considerably increasing of the volume of surgical interventions is not enough. The aim of the study was to identify the individual characteristics of the infraorbital canal and foramen, the inferior orbital fissure. In most of our cases some skulls we discovered additional infraorbital foramen. In most cases additional holes were located medial to the basic hole, rare they opened laterally from it. One skull had two upper medial additional holes on each side, at the others one. In the study of skull x-ray method, the existence of variants in the formation of the canal was on 8 skulls. At two of them were indicated a doubling of the canal on both sides. Study of the inferior orbital fissure without regard to its gender differences revealed that only the longitudinal dimension of the inferior orbital fissure has wide-faced people significantly differs from its value at the narrow-faced. In all shapes of facial skull width of the inferior orbital fissure is most changeable. Significant variability of the transverse dimension of the inferior orbital fissure caused to propose its variants. In our study, 5 variants of inferior orbital fissure were proposed.