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  1571      Downloads  173
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.
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 © 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.
B. Ayoub. (2011). The far lateral approach for intra-dural anteriorly situated tumours at the craniovertebral Junction. Turk. Neurosurg. 21(4): 494-498.
D. Refai, J. H. Shin, C. Iannotti, and E. C. Benzel. (2010). Dorsal approaches to intradural extramedullary tumors of the craniovertebral junction. J. of Craniovertebr. Junction and Spine; 1(1): 49-54.
R. S. Tubbs, J. D. Hallock, V. Radcliff, R. P. Naftel, M. Mortazavi, M. M.Shoja, M. Loukas, and A. A. Cohen-Gadol. (2011). Ligaments of the craniocervical junction: a review. J. Neurosurg. Spine; 14(6): 697-709.
R. Verma, S. Kumar, A. M. Rai, I. Mansoor, and R. D. Mehra. (2016). The anatomical perspective of human occipital condyle in relation to the hypoglossal canal, condylar canal, and jugular foramen and its surgical significance. J. Craniovertebr. Junction Spine; 7(4): 243-249.
A. J. Lopez, J. K. Scheer, K. E. Leibl, Z. A. Smith, B. J. Dlouhy, and N. S. Dahdaleh. (2015). Anatomy and biomechanics of the craniovertebral junction. Neurosurg. Focus; 38(4): 1-8.
K. Vinay, V. Swathi, M. Y. Denia, and K. S. Sachin. (2016) Morphometric study of hypoglossal canal of occipital bone in dry skulls of South India. Int. J. Anat. Res.; 4(4): 3016-3019.
E. D. Kizilkanat, N. Boyan, R. Soames, and O. Oguz. (2006) Morphometry of the hypoglossal canal, occipital condyle, and foramen magnum. Neurosurg. Q.; 16(3): 121-125.
G. Agnihotri, D. Mahajan, and A. Sheth. (2014). An anatomical perspective of human occipital condyles and foramen magnum with neurosurgical correlates. Jemds; 3(17): 4479-4503.
S. Khaoroptham, P. Jittapiromsak, R. Siwanuwatn, and K. Chantra. (2007) The outcome of surgical treatment for tumors of the craniocervical junction. J. Med. Assoc. Thai.; 90(7): 1450-1457.
D. Lang, G. Neil-Dwyer, and F. Iannotti. (1993). The suboccipital transcondylar approach to the clivus and cranio-cervical junction for ventrally placed pathology at and above the foramen magnum. Acta neurochirurgica 125(1): 132-137.
S. Das, R. Suri, and V. Kapur. (2006). Unusual occipital condyles of the skull: an osteological study with clinical implications. Sao Paulo Med J.; 124(5): 278-279.
N. Muthukumar, R. Swaminathan, G. Venkatesh, and S. Bhanumathy. (2005). A morphometric analysis of the foramen magnum region as it relates to the transcondylar approach. Acta Neurochir.; 147(8): 889-895.
A. K. Tale, P. R. Kulkarni, S. I. Shaikh, and S. S. Fupare. (2016) Morphometric study of the occipital condyle and its surgical importance. Int. J. Anat. Res.; 4(1): 1802-1805.
F. A. Fetouh, and A. M. Awadalla. (2009). Morphometric analysis of the occipital condyle and its surgical implications in transcondylar approach. The pan arab neurosurgery society; 15.
J. N. S. Aziz, and M. Youakim. (2016). Morphological study of the foramen magnum and occipital condyle and its surgical implications in transcondylar approach. Libyan J. Med. Res.; 10(1): 70-82.
A. M. Salih, C. E. Ayad, and E. A. Abdalla. (2014). Characterization of occipital condyles in Sudanese using computerized tomography. Glo. Adv. Res. J. Med. Med. Sci.; 3(12): 437-444.
S. Naderi, E. Korman, G. Çıtak, M. Güvençer, C. Arman, M. Şenoğlu, S. Tetik, and M. N. Arda. (2005). Morphometric analysis of human occipital condyle. Clin. Neurol. Neurosurg.; 107(3): 191-199.
P. Bayat, M. Bagheri, A. Ghanbari, and A. Raoofi. (2014). Characterization of occipital condyle and comparison of its dimensions with head and foramen magnum circumferences in dry skulls of Iran. Int. j. morphol; 32(2): 444-448.
G. P. Pereira, A. Lopes, R. Santos, L. Duarte, A. Piva, and G. Pozzobon. (2012). Morphometric analysis related to the transcondylar approach in dry skulls and computed tomography. Int. j. morphol.; 30(2): 399-404.
S. Saluja, S. S. Das, and N. Vasudeva. (2016). Morphometric analysis of the occipital condyle and its surgical importance. JCDR 10(11): AC01-AC04.
S. G. Kalthur, S. Padmashali, S. C. Gupta, and A. S. Dsouza. (2014) Anatomic study of the occipital condyle and its surgical implications in transcondylar approach. J. Craniovertebr. Junction Spine; 5(2): 71-77.
B. Parvindokht, D. M. Reza, and B. Saeid, (2015). Morphometric analysis of hypoglossal canal of the occipital bone in Iranian dry skulls. J. Craniovertebr. Junction Spine; 6(3): 111-114.
W. M. Sayed, and I. F. Gaballah. (2015). A study of the dimensions of both the foramen magnum and occipital condyles in modern Egyptians and their use in sex determination. Egyptian J. of Anatomy; 38(1): 29-42.
R. Abdel-Karim, A. M. Housseini, and R. Hashish. (2015). Adult sex estimation using three-dimensional volume Rendering multislice computed tomography of the foramen magnum and occipital condyles: a study in Egyptian population. Int. J. Adv. Res.; 3: 1212-1215.
S. Cirpan, G. N. Yonguc, N. G. Mas, F. Aksu, and A. O. Magden, (2016). Morphological and morphometric analysis of foramen magnum: an anatomical aspect. J. Craniofac. Surg.; 27(6): 1576-1578.
M. Nagwani, A. Rani, and A. Rani. (2016). A morphometric and comparative study of foramen magnum in North Indian population. Journal of the Anatomical Society of India; 65: 11-15.
S. Radhakrishna, C. Shivarama, A. Ramakrishna, and B. Bhagya, (2012). Morphometric analysis of foramen magnum for sex determination in South Indian population. Nitte Uni. J. Health Sci.; 2(1): 20-22.
K. A. Murshed, A. E. Çiçekcibaşi, and I. Tuncer. (2003). Morphometric evaluation of the foramen magnum and variations in its shape: a study on computerized tomographic images of normal adults. Turk. J. Med. Sci.; 33(5): 301-306.
P. Chethan, K. G. Prakash, B. V. Murlimanju, K. U. Prashanth,, L. V. Prabhu, V. V. Saralaya, A. Krishnamurthy, M. S. Somesh, and C. G. Kumar. (2012). Morphological analysis and morphometry of the foramen magnum: an anatomical investigation. Turk. neurosurg.; 22(4): 416-419.
E. Avci, A. Dagtekin, A. H. Ozturk, E. Kara, N. C. Ozturk, K. Uluc, E. Akture, and M. K. Baskaya. (2011). Anatomical variations of the foramen magnum, occipital condyle and jugular tubercle. Turk. Neurosurg.; 21(2): 181-190.
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