Volume : V, Issue : III, May - 2021
INTROCUTION: Variations of foramen transversaium is a well-known entity of cervical verteae (Reos et al 2014) and such variations have been reported to have association with verteo-basilar insufficiency. Aim of present study is to provide data of morphological variation of transverse foramen of atlas along with its morphometric measurement in Indian population.MATERIAL AND METHOD: Foramen transversarium of each atlas verteae was keenly observed whether it was absent, complete or incomplete, if incomplete foramen transversarium was seen, then it was also examined whether anterior root or posterior root of foramen was missing. Presence of any accessory foramen of transverse process was also noted.Variability of shape of foramen transversarium of atlas was also noted. Viz oval, circular or irregular shape.For measurement of foramen transversarium, diameters were taken in two planes in which foramen diameter has its maximum anteroposterior and maximum transverse value. Foramen transversarium of atlas is normally bounded by anterior and posterior root. The thickness of the anterior and posterior root was also measured by digital vernier calipers for comparison. For measuring thickness of root was tightly hold between jaws of vernier caliper and reading of instrument was noted.RESULTS AND DISCUSSION: Incomplete foramen transversarium was found in 6.2 % verteae, out of which 4.8 % were bilateral and1.4 % were unilateral and only 7.6% on left side. Out of 250 atlas vertea, 4% vertea showed accessory foramen transversarium, out of which 4% were bilateral and 0% were unilateral. Regarding the shape of foramen transversariummost common shape of foramen was circular followed by oval on either side. In the present study out of 250 verteae maximum transverse diameter of foramen transversarium was found to be 6.98 0.65 mm on left side while it was 7.13 0.86 mm on right side. Maximum anteroposterior diameter of foramen transversarium was found to be 8.16 0.57 mm on left side and 8.29 0.76 mm on right side.CONCLUSION: The study reveals statistically significant regional differences. The observations made in the present study may be helpful to anatomists, anthropologistsand neurosurgeons.
MORPHOLOGICAL VARIATIONS AND MORPHOMETRY OF FORAMEN TRANSVERSARIUM OF HUMAN ATLAS VERTEBRAE, Dr. Hasmatullah, Dr. Pawan Kumar Mahato, Dr. Alok Kumar Singh, Dr. Nishth Singh, Dr. Geetanjali Arora, INTERNATIONAL JOURNAL OF ADVANCED MEDICINE : Volume-5 | Issue-3 | May-2021