Comparative Study of Incidence of Inca Bones in North and South Indian Human Crania

1189 non-pathological dried crania of North and South India are studied for sexual dimorphism and regional (racial) study for inter parietal or Inca bones. observed that their incidence is insignificant in the study of sexual dimorphism but regionally in North Indian Male crania had 1.96% and Female crania 1.99% of Inca bones are observed while in South Indian Male Crania had 2.80% and Female crania had 2.79% of Inca bones were studied. These findings of incidence were useful for anatomist, anthropologist and medico-legal expert. Above all to the Radiologist to differentiate the Inca bones from the fracture of the crania. This incidence of Inca Bones irrespective of sex and race (region) certainly represent that, the primates were our ancestors because evolution is not a harmonious progression of all parts of the organism. It is a jerky and asymmetrical transformation and a human cranium is late representatives of our ancestors in the form of interparietal bone. These findings are more or less in agreement with previous workers but sexual dimorphism and studyof Inca bones in south Indian population appears to be quite new study.