Abstract—Study on human skeletal for sex determination has been a topic of interest among researchers. It appears to be the main reliable bone exhibiting sexually dimorphic traits, specially the mastoid region. Present study aims to determine the difference in mastoid morphometry between male and female bone for sex differentiation.
Material and methods: A descriptive observational study was conducted at Department of Anatomy, SMS Medical College, Jaipur between April- December 2014. Forty dry macerated adult Human skulls of age group above 18-25 yrs of known sex were included in which suture between the basiocciput and basisphenoid were united. Vernier Caliper was used for measurements of Mastoid process in Frankfurt’s Plane.
Results: Mastoid length was significantly larger in males as compared to females on both sides (p value <0.05). Cut-off of right mastoid length of 32.39mm and left Mastoid length of 31.71mm were highly accurate in differentiating male and female skull.
Conclusion: The parameters like mastoid process length can be used as predictors to determine gender and could be of immense use in forensic medicine and anthropology and will also serve as a future framework for estimating the craniofacial dimensions of other Indian population.
Key word: Mastoid Length, Sex Differentiation, Sex Determination.
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