Anatomical Variations Of Inca Bone In Adult Human Egyptian Skulls

ABSTRACT

Background: The Inca bone is integral part of the occipital bone of the skull in its interparietal region andappears during radiological examination of the skull.Aim of the work This study aimed to estimate the incidence rates and variations of interparietal (Inca) andpreinterparietal bones in adult human Egyptian skulls .Materials and methods: In the present study 60 dry human Egyptian skulls (37 males and 23 females) wereexamined to determine the incidence rates of Inca and preinterparietal bones with detailed measurements forInca bone in mm using electronic digital caliber.Results: The incidence rates of Inca and preinterparietal bones were higher in male skulls than female skulls andthe interparietal or Inca bone was observed in only 4 skulls ( 6.66% ) while the preinterparietal bone wasobserved only in 2 skulls ( 3.33 %) .Conclusion: The presence of the Inca and preinterparietal bones was rare in the human Egyptian skulls andtheir incidence rates were higher in male skulls .