title: Frequency and classification of bony projections on the lower border of superior orbital fissure.
abstract: At the lower border of superior orbital fissure, at the junction of broad medial and narrow lateral portions of the greater wing of sphenoid bone, a bony projection (lateral rectus spine) occurs onto which the lateral rectus muscle and common tendinous ring attach. Such a bony projection has a special clinical significance not only because of its relationship with the contents of superior orbital fissure, but also because it is an attachment point for dura mater. In this study 286 males and 181 females, a total of 467 Anatolian dry skulls in which all the orbits were intact were examined. The bony projections mentioned above were classified according to their shapes. The ones most observed were the tubercle and spine forms which were 30.62% and 23.23% respectively. Of the 467 dry skulls 156 (16.70%) had no bony projection on the lower border of superior orbital fissure.
authors.affiliation: Gazi University, Faculty of Medicine, Department of Anatomy, Ankara, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Anil
authors.forename: T
authors.initials: T
authors.lastname: Peker
authors.forename: C
authors.initials: C
authors.lastname: Pelin
authors.forename: H B
authors.initials: HB
authors.lastname: Turgut
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010163:Paleontology; D013100:Sphenoid Bone / Q000033:anatomy & histology*; D014421:Turkey; D044465:White People