Muhammad A Sheikh, Muhammad Yasoob, Zahra H Bokhari, Atiya Khalid.
The clinical anatomy of anterior clinoid process, optic strut and caroticoclinoid foramen in Pakistanis.
Pak Postgrad Med J Jan ;18(2):64-7.

During operation on the anterior part of the cavernous sinus the anterior clinoid process and the optic strut are often removed. Internal carotid artery is closely related to the caroticoclinoid foramen and it may he damaged during removal the removal of the anterior clinoid process. Therefore it is important to know the anatomy of the anterior clinoid process and variations. Objective: The purpose of this study was to investigate the dimension and the variation of the anterior clinoid process. optic strut and to describe the variation of the caroticoclinoid foramen. Material and Methode: Forty-five dry skulls obtained from Anatomy department of King Edward Medical University, Lahore. Basal width, length, thickness of anterior clinoid process, thickness of optic strut and diameter of caroticoclinoid foramen was measured. Morphology of caroticoclinoid foramen was also studied. Results: The average length, basal width and thickness of the anterior clinoid process on right side were 9.34 1.30 mm, 9.03 ± 1.26 mm, 3.14 ± 0.59 mm and left side were 9.17 ± 1.22 mm, 8.91 ± 1.15, 3.05 ± 0.65 min respectively . Average thickness of optic strut was 2.66 ± 0.62 mm on right side and 2.68 ± 0.64mm on left side. The complete caroticoclinoid foramen was in 4 (right side, 4.4%), 4 (left side, 4.4%) incomplete in 12 (9 right, 3 left, 13.3%) respectively. The incidence of caroticoclinoid foramen in Pakistani population is compared with other races. Conclusion: The incidence of complete caroticoclinoid foramen in equal on both left and right sides of skull. There is difference of incidence of incomplete caroticoclinoid foramen. It is more common on the right side than on the left side of skull. The dimensions of anterior clinoid process and optic strut are variable bilaterally.

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