STUDY ON INCIDENCE OF INCA BONE IN DRY HUMAN SKULLS

Introduction: Inca bones, also referred to as interparietal or supernumerary bones, are rare anatomical variations located in the occipitoparietal region of the skull. Their prevalence varies worldwide, ranging from 0.5% to 15%, and they hold significance in forensic medicine, radiology, and anthropology due to their potential to be misidentified as cranial fractures. This study aims to determine the prevalence of Inca bones in dry human skulls from Udaipur, Rajasthan. This osteological study was conducted on 60 dry human skulls from t Materials And Methods: he Department of Anatomy at RNT Medical College, Udaipur, collected over six months (January to June 2024). The skulls were examined for the presence of Inca bones. Sex was identified based on external features such as the supraorbital ridge and mandible angle. The skulls were examined macroscopically, and those with Inca bones were photographed. Of the 60 skulls, a complete tripartite Inca bone was Results: found in 2.7% of male skulls, and a lateral asymmetric Inca bone was observed in 4.34% of female skulls. The overall prevalence of Inca bones in the Udaipur population was 3.33%. Conclusion: The study identified a lower prevalence of Inca bones compared to some Indian populations. These findings underscore the importance of recognizing Inca bones in forensic and radiological assessments to avoid misinterpretation as cranial fractures. Future studies with larger sample sizes are recommended to explore the clinical significance of these variations in the Udaipur population.