IJAR.2019.130
Type of Article: Original
Volume 7; Issue 2.1 (April 2019)
Page No.: 6410-6415
DOI: https://dx.doi.org/10.16965/ijar.2019.130
MORPHOLOGY AND MORPHOMETRIC STUDY ON ANATOMICAL VARIATIONS OF JUGULAR FORAMEN IN ADULT HUMAN SKULLS
T.L.Anbumani 1, M.Raja *2, A.Thamarai Selvi 3.
1 Professor and Head of the Department,Department of Anatomy. KarpagaVinayaga Institute of Medical Sciences, Madurantakam Taluk, Kanchipuram District, Tamil Nadu, India.
*2 Post graduate, KarpagaVinayaga Institute of Medical Sciences, MadurantakamTaluk, Kanchipuram District, Tamil Nadu, India.
3 Assistant Professor, KarpagaVinayaga Institute of Medical Sciences, Madurantakam Taluk, Kanchipuram District, Tamil Nadu, India.
Address for Correspondence: Dr. M.Raja, MD Anatomy Post graduate, KarpagaVinayaga Institute of Medical Sciences, MadurantakamTaluk, Kanchipuram District, Tamil Nadu, India.
E-Mail: Jeyamraja2015@gmail.com
ABSTRACT:
Background: Jugular foramen, a large irregular foramen at the base of the skull , lies at the posterior end of petro occipital suture between jugular process of occipital bone and jugular fossa of petrous part of temporal bone ;above and lateral to foramen magnum. Many important structures pass through this foramen. Among these are Inferior Petrosal Sinus, presence of three cranial nerves 9, 10, and 11 and Internal Jugular vein.The increasing use of modern diagnostic procedures and new surgical approaches has created a need for much more detailed anatomical studies and explanations.
Materials and Methods: The study was conducted in Osteology lab of Anatomy Department,KarpagaVinayaga Institute of Medical Sciences, Chinnakolambakkam,Madurntakam taluk,Tamilnadu (India). 66 jugular foramina of 33 Adult human skulls have been examined for study.
Results and Conclusion: The morphometric and morphological analysis of jugular foramen were done in 33 skulls, and the results obtained are mentioned below. The Mean average width of foramen is 15.26mm and the Range is between 10mm and 21mm. The Mean average length of foramen is 10mm and the Range is between 6mm and 14mm.Regarding, the size of the foramina; the Right side is larger than the Left side. Incomplete Intrajugular process is the commonest observation observed (in 64 foramina).Regarding,Intra Jugular Process contribution for foramen, it is mainly from Temporal bone. Separate foramen for IPS was found only in one foramen out of 66 foramina observed.The height of dome of jugular fossa is more on the Right than on the Left side (in 60.6% of skulls).The range of Height of the Dome is 6.41mm to 18.46mm and the Mean average is 12.11mm.
Key Words: Jugular foramen, Jugular fossa, Skull, Sigmoid Sinus,InferiorPetrosal Sinus. Compartment, Internal Jugular Vein.
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