1Dept. of Forensic Medicine and Toxicology, University College of Medical Sciences, Dilshad garden, Delhi-110 095
*For correspondence Dr. S.K. Verma Professor, Dept. of Forensic Medicine UCMS & GTBH, Dilshad Garden, Delhi-110 095
Identification is one of the parameter that is unique to an individual and is required frequently in medico-legal scenario. Since bones resist putrefaction for considerable long time therefore they provide abundance of information for the purpose of identification of an individual. Skull is one such bone which provides one of the best parameters to ascertain sex with reasonable accuracy. A prospective randomized study has been conducted in the Department Of Forensic Medicine, University College of Medical Sciences & Guru Teg Bahadur Hospital, Delhi. In this study area of mastoid triangle is correlated with the sex of the individual in 200 cases (100 male and 100 female). The dead bodies of age group between 18 years to 60 years were selected for the study.
The following three osteometric measurements were taken: a. Mastoidale to asterion (M-A); b. Mastoidale to porion (M-P);and c. Porion to asterion (P-A)
Area of mastoid triangle was calculated by using the formula:
The results were compared between age groups and in total sample population using discriminant function analysis. The minimum value for area of mastoid triangle in males was 305.9 sqmm in age group 25–31 yrs and that for females was 245.6 in age group e” 53 yrs. The maximum value for mastoid triangle area in males was 845.0sqmm in age group 46–52 yrs while that for female was 677.1sqmm in age group d” 24 yrs. The mean value of area of mastoid triangle in total age groups, in males was 478.0sqmm and was 412.03sqmm in females. There is a statistically significant difference in the mean of area of mastoid triangle in males and females (p < 0.01).
By using discriminant function analysis, discriminating score was reached for total population, by using the formula:
DS=area of mastoid triangle ധ 0.000175 – 0.203
