Anatomical variations and morphometric study of the optic strut and the anterior clinoid process

  • Eldan Kapur Department of Anatomy, Medical Faculty, University of Sarajevo
  • Amina Mehić Department of Anatomy, Medical Faculty, University of Sarajevo
Keywords: optic strut, anterior clinoid process, caroticoclinoid foramen

Abstract

The optic strut and the anterior clinoid process represent bony structures that are closely related to anatomically and clinically significant elements such as the cavernous sinus, the internal carotid artery, the optic nerve and the pituitary gland. The objective of our study was to quantify dimensions of the optic strut and anterior clinoid process, and to determine variations in positions and forms of these structures. A descriptive anatomical study was performed on 200 dry human skulls. We analyzed dimensions and variations in position of the optic strut, dimensions of the anterior clinoid process as well as the incidence and forms of the caroticoclinoid foramen. The average thickness of the optic strut on skulls belonging to males was 3 mm and 2.8 mm on those belonging to females. The optic strut was most commonly attached to the anterior two fifths on the lower side of the anterior clinoid process. On the male skulls the average width of the anterior clinoid process was 9.4 mm (right) and 9.1 mm (left). Its length was 9.9 and 9.3 mm. On female skulls the average width of the process was 8.7 mm (right) and 8.3 mm (left), while the length measured 9.3 mm on the right and 8.9 mm on the opposite side. In our sample, a complete caroticoclinoid foramen appeared in 4.25%, a contact form in 2.75%. At last, an incomplete form of the foramen was observed in 9.75%. The anatomic variations of the investigated structures must be considered during the approaches to the cavernous sinus and neurovascular elements of the sellar region.

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Published
2012-05-20
How to Cite
1.
Kapur E, Mehić A. Anatomical variations and morphometric study of the optic strut and the anterior clinoid process. BJBMS [Internet]. 20May2012 [cited 22Mar.2019];12(2):88-3. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/2502
Section
Anatomy