Welcome to International Journal of Anatomy and Research

Type of Article: Original Research

Year: 2015 | Volume 3 | Issue 4 | Page No. 1737-1740

Date of Publication: 31-12-2015

DOI: http://dx.doi.org/10.16965/ijar.2015.332

MORPHOMETRY AND VARIATIONS OF FORAMEN VESALIUS: SIGNIFICANCE IN SURGICAL APPROACH TO MANDIBULAR NERVE

K G Prakash *¹, S Viveka ².

^*1 Professor and Head, Department of Anatomy, Azeezia Institute of Medical Sciences, Kollam, Kerala, India.
² Assistant Professor, Department of Anatomy, Azeezia Institute of Medical Sciences, Kollam, Kerala, India.

Address: Dr. K G Prakash, Professor and Head, Department of Anatomy, Azeezia Institute of Medical Sciences, Kollam, Kerala State- 691537, India. Phone no.: +919645216564.
E-Mail: drprakashkg@gmail.com

Abstract

Background: Foramen Vesalius a small inconsistent foramen in the base of skull for passage of emissary vein from pterygoid plexus of veins to cavernous sinus. Variations in incidence and morphology are reported in literature. The objective of this study as to estimate its incidence in south Indian population and to evaluate the morphometric variations.
Materials and Methods: Twenty-two dry skulls belonging to department of anatomy, Azeezia Institute of Medical Sciences, Kollam was studied with respect to base of the skull foramens. Wherever the foramen Vesalius was noted, the specimens were photographed and incidence, laterality was noted. Maximum, minimum and perimeter were noted. Any difference between male and female skulls and differences in right and left side were studied for statistical significance. P<0.05 was considered as significant.
Results: We found foramen Vesalius in 40.9% of 44 sides examined. Six skulls had this foramen bilaterally. Three specimens had foramen Vesalius unilaterally and six specimens had it bilaterally. Average diameter of foramen was 1.35 (±0.56) mm from extra cranial aspect. The average diameter and perimeter of foramen in males were significantly lower than females. The average distance between foramen Vesalius and foramen ovale was significantly more in females than in males.
Conclusion: Foramen ovale is an inconsistent and asymmetrical foramen in base of skull near foramen ovale. Forty percent of the skulls studied had foramen Vesalius. There is significant difference measurements of right and left side foramens. Considering these variations in infratemporal fossa decreases complications while approaching mandibular nerve and trigeminal ganglion.
KEY WORDS: Foramen Vesalius, base of skull, foramen ovale, emissary veins, mandibular nerve.

References

1. Shinohara AL, de Souza Melo CG, Silveira EMV, Lauris JRP, Andreo JC, de Castro Rodrigues A. Incidence, morphology and morphometry of the foramen of Vesalius: complementary study for a safer planning and execution of the trigeminal rhizotomy technique. Surg Radiol Anat. 2010 Feb;32(2):159–64.
2. Lanzieri CF, Duchesneau PM, Rosenbloom SA, Smith AS, Rosenbaum AE. The significance of asymmetry of the foramen of Vesalius. AJNR Am J Neuroradiol. 1988 Dec;9(6):1201–4.
3. Kaplan M, Erol FS, Ozveren MF, Topsakal C, Sam B, Tekdemir I. Review of complications due to foramen ovale puncture. J Clin Neurosci. 2007;14(6):563–8.
4. Kocaoğullar Y, Avci E, Fossett D, Caputy A. The extradural subtemporal keyhole approach to the sphenocavernous region: anatomic considerations. Minim Invasive Neurosurg MIN. 2003;46(2):100–5.
5. Gupta N, Yadav A, Thomas RJ, Shrivastava A. Incidence of foramen Vesalius in adult human North Indian crania. J Dent Med Sci. 2014;13(5):34–8.
6. Rossi AC, Freire AR, Prado FB, Caria P, Botacin PR. Morphological characteristics of foramen of Vesalius and its relationship with clinical implications. J Morphol Sci. 2010;26–9.
7. Kodama K, Inoue K, Nagashima M, Matsumura G, Watanabe S, Kodama G. Studies on the foramen vesalius in the Japanese juvenile and adult skulls. Hokkaido Igaku Zasshi. 1997;72(6):667–74.
8. Berge JK, Bergman RA. Variations in size and in symmetry of foramina of the human skull. Clin Anat. 2001;14(6):406–13.
9. Chaisuksunt V, Kwathai L, Namonta K, Rungruang T, Apinhasmit W, Chompoopong S. Occurrence of the foramen of Vesalius and its morphometry relevant to clinical consideration. Sci World J [Internet]. 2012 [cited 2015 Dec 6];2012. Available from: http://www.hindawi.com/journals/tswj/2012/817454/abs/
10. Wysocki J, Reymond J, Skarzyński H, Wróbel B. The size of selected human skull foramina in relation to skull capacity. Folia Morphol Warsz. 2006 Nov;65(4):301–8.
11. Ginsberg LE, Pruett SW, Chen MYM, Elster AD. Skull-base foramina of the middle cranial fossa: reassessment of normal variation with high-resolution CT. Am J Neuroradiol. 1994;15(2):283–91.
12. Henderson WR. A note on the relationship of the maxillary nerve to the cavernous sinus and to an emissary sinus passing through the foramen ovale. J Anat. 1996;100:905–8.
13. Sondheimer FK. Basal foramina and canals. Radiology of the skull and brain. In Newton TH, Potts DG, editors. St. Louis: Mosby; 1971. 305-321.

K G Prakash, S Viveka. MORPHOMETRY AND VARIATIONS OF FORAMEN VESALIUS: SIGNIFICANCE IN SURGICAL APPROACH TO MANDIBULAR NERVE. Int J Anat Res 2015;3(4):1737-1740. DOI: 10.16965/ijar.2015.332