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Year :2022
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Month :
September-October
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Volume :
11
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Issue :
4
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Page :
AO11 - AO14
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Morphometric Analysis of Anterior Clinoid Process and Optic Strut: A Cadaveric Study
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Correspondence Address :
Sharada B Menasinkai, V Savitha,
Sharada B Menasinkai,
Professor and Head, Department of Anatomy, Adichunchanagiri Institute of Medical Sciences, Affiliated to Adichunchanagiri University, B.G. Nagara, Mandya, Karnataka, India.
E-mail: drsharadabmenasinkai@bgsaims.edu.in
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Introduction: Introduction: Anterior Clinoid Process (ACP) is a bony projection on the posterior border of lesser wing of sphenoid. It is related to optic nerve, internal carotid and ophthalmic arteries. Optic strut (OS) is a bony formation located between upper side of body and lesser wing of sphenoid bone.
Aim: To observe the variations in length, width of ACP and location of optic strut on right and left side in dry skulls among South Indian population.
Materials and Methods: An observational study was done in the Department of Anatomy, Adichunchanagiri Institute of Medical Sciences, Mandya, Karnataka, India, from August 2021 to December 2021. Total 37 dry skulls were collected from department and also from bone sets from first year MBBS (Bachelor of Medicine and Bachelor of Surgery) students. Various parameters (length, width of ACP, distance from tip of ACP and OS, distance between tips of ACP) were measured on both sides using digital vernier callipers. Independent t-test was applied to compare the means of different groups.
Results: Mean width of ACP was 14.86±4.47 mm on right side and 12.71±3.13 mm on left side (p-value 0.019). Mean length was 12.45±2.85 mm on right side and 12.05±3.11 mm on left side (p>0.05). Mean distance from tip of ACP to optic strut was 9.48±2.86 mm on right side and 9.31±3.03 mm on left side (p-value >0.05). Distance between the tips of ACP ranged from 27.09±28.89 mm and mean was 26.29±3.77 mm. Optic strut was located at anterior two-fifth of ACP on right side in 17 (45.95%) and on left side in 14 (37.83%) of skulls.
Conclusion: There was variation in mean width of ACP on right and left side. The knowledge will help in preoperative planning and preventing unnecessary injury to neurovascular structures present in vicinity of anterior clinoid process and optic strut.
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