Objective: To find out the relation between sciatic notch index of adult human male and female from specimens present in the museum and inventory. Methodology: All bony specimens for study were taken from the museum of Forensic Medicine Department and Anatomy Department of Medical College, Kolkata and also from the inventory of Kolkata Police Morgue, based on the exclusion and inclusion criteria. They are arranged systematically by putting a unique number code against each specimen and measurements are taken of dimensions of sciatic notch using the standard measuring tools and following standard anthropometric methods. Results: Z test is done. n= 104, F=56 and M=48. For males and for females the mean Depth of sciatic notch is found to be 3.81 and 2.98 respectively.(Table 2) The mean Width of the same in males and females are found to be 3.48 and 4.23 respectively. SN Index of males and females are found to be 103.93 and 146.02 respectively.(Table 3) Conclusion: The differences are found to be statistically significant from the specimens taken for study. As such sciatic notch index in adults may be considered to be a dependable anthropometric entity for sexing of human pelvis, particularly in mutilated and fragmented skeletal parts.

Keywords: Sciatic notch index; Adult human pelvis; Sexual dimorphism; Variability.