Type of Article:  Original Research

Volume 8; Issue 1.1 (January 2020)

Page No.: 7271-7276

DOI: https://dx.doi.org/10.16965/ijar.2019.356


Ibrahim Hassan Ibrahim.

Human anatomy and embryology department, faculty of medicine, Zagazig University , Sharkia, Egypt.

Corresponding author: Ibrahim Hassan Ibrahim, Human anatomy and embryology department, faculty of medicine, Zagazig University, Sharkia, Egypt. Postal Code: 44519 Phone: +201006501801 E-Mail: ebrahimelazony5555@yahoo.com


Background: The Inca bone is integral part of the  occipital bone of the skull in its interparietal region and  appears  during radiological examination of the skull.

Aim of the work: This study aimed to estimate the incidence rates and variations of interparietal (Inca) and preinterparietal bones in adult  human Egyptian skulls .

Materials and methods: In the present study  60 dry human Egyptian skulls (37 males and 23 females) were  examined  to determine the incidence rates of Inca and preinterparietal  bones with detailed measurements for Inca bone in mm using electronic digital caliber.

Results: The incidence rates of Inca and preinterparietal  bones were higher in male skulls than female skulls and the interparietal or Inca bone was observed in only 4 skulls ( 6.66% ) while  the preinterparietal bone was observed only in 2  skulls ( 3.33 %) .

Conclusion: The presence  of  the  Inca  and  preinterparietal  bones  was rare in the human  Egyptian skulls and  their incidence  rates  were higher in male skulls .

Key words: Inca, Interparietal Bone, Preinterparietal Bone.


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Cite this article: Ibrahim IH. ANATOMICAL VARIATIONS OF INCA BONE IN ADULT HUMAN EGYPTIAN SKULLS. Int J Anat Res 2020;8(1.1):7271-7276. DOI: 10.16965/ijar.2019.356