Anatomic characteristics of foramen vesalius.

Abstract

OBJECTIVES: Foramen Vesalius is an inconstant foramen that gives passage to an emissary vein that connects pterygoid venous plexus with cavernous sinus, the importance of which lies in the fact that an infected thrombus from an extracranial source may reach cavernous sinus. This study presents some data on characteristics of foramen vesalius. METHODS: We studied 70 sides of 35 dried adult human skulls available in the Department of Anatomy, Manipal College of Medical Sciences, Pokhara, Nepal. Variation in number and incidence of foramen Vesalius were noted. Differences between the right and the left side and between the male and the female sex are discussed. MAIN FINDINGS: Foramen Vesalius was present in 23 sides (14 right, 9 left) out of the 70 sides observed, the incidence being 32.85% (20.0% right side, 12.85% left side) of all the sides observed. Incidence of bilateral and unilateral foramen vesalius was 22.85% (8 out of 35 skulls) and 20% (7 out of 35 skulls) respectively. Foramen vesalius was found in 10 sides in males and in 13 sides in females. No remarkable differences were observed in the incidence of foramen vesalius between the sides within same sex but the incidence was more in females compared to male skulls. SIGNIFICANCE OF FINDINGS: Anatomic variations of the foramen vesalius could be explained by developmental reasons. Knowledge about characteristics of foramen vesalius and its incidence is not only important for anatomists but equally essential for an operating surgeon.

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