Volume 4, Issue 1, June 2018, Page: 19-26
Morphometric Study of Human Adult Occipital Condyle, Hypoglossal Canal and Foramen Magnum in Dry Skull of Modern Egyptians
Shimaa Anter Farid, Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
Islam Omar Abdel Fattah, Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
Received: Jan. 10, 2018;       Accepted: Feb. 1, 2018;       Published: Mar. 2, 2018
DOI: 10.11648/j.ijcda.20180401.13      View  875      Downloads  86
Abstract
The present study investigated analyze some morphometric data about occipital condyles (OCs), hypoglossal canals (HCs) and foramen magnum (FM) for safety transcondylar surgical approach, and to compare the Egyptian skull measurements with that of the other races. A total of 75 dry skulls of unknown sex which were randomly chosen from the archives of Department of Human Anatomy and Embryology, Faculty of Medicine, Suez Canal University were used with exclusion of the extremely deformed or damaged. The parameters were measured by digital Vernier calipers with 0.01 mm precision and a protractor. Statistical analysis of data - one way analysis of variance- was done using unpaired Student's t-test. Results indicated no statistical significant differences between the right and left sides of measured parameters. The morphometric analysis of the OC established that mean width & length was larger (14.8 & 22.9 mm) in Egyptian population when compared to other races. According to the parameters of the HCs, the mean length of right and left ones were 11.84 mm and 11.8 mm respectively, while their mean angles with the sagittal plane were found to be 31.8° and 31.6° respectively. The mean diameter of the intracranial end of the right HC was 6.24 mm and of the left one was 6.04 mm, on the other hand, the mean diameters of the extracranial ends were 6.18 mm and 6.04 mm respectively. Regarding the parameters of FM, the mean length and width were 35 mm and 29.4 mm respectively. On the other hand, the mean distance of right mastoid process to the nearest point of FM was 34.72 mm, while the left one located at a mean distance of 35.2 mm from FM. 40% of skulls studied exhibited an ovoid foramen magnum as the foramen magnum index was > 1.2 but 60% of our samples were ˂ 1.2 which were asymmetrical in shape. We conclude that careful radiological analysis of the craniocervical junction is required before surgery to prevent inadvertent complications such as hemorrhage, atlantooccipital instability and injury to major structures passing through foramen magnum. Our outcomes will be useful for safe surgery in craniocervical region in Egypt.
Keywords
Craniocervical Junction, Foramen Magnum, Occipital Condyles, Hypoglossal Canal, Morphometry and Transcondylar Approach
To cite this article
Shimaa Anter Farid, Islam Omar Abdel Fattah, Morphometric Study of Human Adult Occipital Condyle, Hypoglossal Canal and Foramen Magnum in Dry Skull of Modern Egyptians, International Journal of Clinical and Developmental Anatomy. Vol. 4, No. 1, 2018, pp. 19-26. doi: 10.11648/j.ijcda.20180401.13
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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