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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 12, Issue 1, September 2014 pp 56-59

Research Article

Sexual dimorphism in foramen magnum and mastoid process

Ghule Shubhangi B.1, Mahajan Amrut A.2, Wagh Kailash B.3, Ambali M. P.4

{1Assistant Professor, 2Professor and HOD, Department of Anatomy} {3Assistant Professor, Department of Microbiology}

Dr. Ulhas Patil Medical College, Jalgaon (khurd), Maharashtra, INDIA.

4Professor, Department of Anatomy, Krishna institute of medical sciences deemed university, Karad, Maharashtra, INDIA.


Introduction: The successful identification of deceased is vital to the progress of any forensic investigation. One of the principle biological indicators of identity is the sex of individual. This becomes more difficult if only parts of a skeleton are found or if the bones are compromised by physical insults such as fire, explosion, violence. The present study was carried out to assess every part of human skeleton on its own merit to determine its value for identification of sex. Methods: Adult human dry skull of known sex (100 male and 100 female) were obtained from different medical colleges of Maharashtra. The parameters like foramen magnum length, foramen magnum breadth, foramen magnum index, mastoid process length, mastoid process breadth, mastoid process index were studied. Results: mean value of foramen magnum length and breadth in male is higher than in female. Mastoid process is larger in male and smaller in female. There was no significant difference in foramen magnum index between male and female. Mastoid process index is significantly more in female than in male. Conclusion: Amongst the parameters foramen magnum length, foramen magnum breadth, mastoid process length, mastoid process breadths are all reliable for determination of sex. Amongst the indices, mastoid process index is more reliable for determination of sex.