ABSTRACT
Introduction: The identification of sex in human skeletal remains is an important component of manyanthropological investigations and forensic science. Sex determination using sacrum is often considered withvarious available parameters and indices when dealing with human skeleton remains. Sacral index is the mostimportant criteria for sex determination using sacrum. Present study aims at determining the significance ofsacral index in sex determination from sacra of saurashtra region.Materials and Methods: 120 (84 male and 36 female) adult human sacra of known sex from Saurashtra regionwas included in present study. Ventral straight length and maximum breath of sacrum was measured , sacralindex calculated, Demarking points for these parameters were used for identification of sex of sacrum.Results: In males sacral index varies from 90.38 to 119.36, with mean value of 103.49 and standard deviationwas found to be 8.52. In females sacral index varies from 92.86 to 141.33, with mean value of 116.97 andstandard deviation was found to be 8.52. In statically significant range(Mean ± 3 SD) maximum value of malesacral index was 121.76 and minimum value of female index was 91.40. These two points were accepted asdemarking points.Conclusion: Significant differences has been observed in the sacral index of males and females of Saurashtraregion. Sacral index is higher in females than in males. On the basis of present study it can be concluded that inSaurashtra region sacrum having sacral index less than 91.40 is definitely of male whereas sacrum havingsacral index more than 121.76 is definitely of female. However not a single parameter could identify sex of 100%of the bones.