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Sexual Dimorphism in Hypoglossal Canal Dimensions Among Young Adults

Abstract

The study examines sexual dimorphism in hypoglossal canal dimensions among young adults, focusing on the anatomical differences in the size and morphology of the hypoglossal canal between male and female individuals. The hypoglossal canal is an important anatomical passage through the occipital bone that transmits the hypoglossal nerve and associated vascular structures. Accurate knowledge of its dimensions is relevant to understanding cranial base anatomy and may support clinical procedures involving the posterior cranial fossa and skull base. The study will assess selected dimensions of the hypoglossal canal among young adult males and females using standardized anatomical landmarks and appropriate imaging-based or osteological measurement procedures. The specific objectives will include determining the length, diameter, and other measurable dimensions of the hypoglossal canal, comparing these dimensions between male and female participants, and documenting the extent of anatomical variation within the study population. A cross-sectional descriptive research design will be adopted for the study. An appropriate sample of young adults will be selected using a suitable sampling technique, while hypoglossal canal dimensions will be obtained through standardized imaging or osteological assessment procedures. The collected data will be analyzed using descriptive statistics such as frequency, percentage, mean, and standard deviation, while appropriate inferential statistical tests will be applied to determine significant differences between male and female groups. The study is expected to reveal measurable differences in selected hypoglossal canal dimensions between male and female young adults, with some dimensions potentially showing statistically significant sexual variation. The findings are also expected to demonstrate the range of anatomical variability in hypoglossal canal morphology within the study population. Such findings may provide useful anatomical reference values while recognizing that observed differences may vary across populations. The findings will be useful to anatomists, radiologists, neurosurgeons, cranial base surgeons, forensic anthropologists, and other healthcare professionals involved in the assessment of skull base anatomy. The study may contribute to improved understanding of the anatomical characteristics of the hypoglossal canal and provide reference information for interpreting imaging studies and planning procedures involving the occipital region and posterior cranial fossa. The study will conclude by providing information on sexual variation in hypoglossal canal dimensions among young adults. It is recommended that standardized measurement procedures be maintained in anatomical and imaging-based assessments of the hypoglossal canal, while further studies involving larger and more diverse populations should be conducted to establish broader anatomical reference data.

Keywords: Sexual dimorphism, hypoglossal canal, occipital bone, cranial base, skull base anatomy, hypoglossal nerve, cranial dimensions, anatomical variation, morphometry, osteology, radiology, forensic anthropology, young adults, sex differences, anatomical measurements.