Clavicle Morphometry for Sexual Dimorphism and Bilateral Asymmetry: Radiographic Assessment

  • Sudikshya KC Department of Anatomy, Nepalese Army Institute of Health Sciences, Kathmandu, Nepal
  • Subina Shrestha Department of Anatomy, Lumbini Medical College and Teaching Hospital, Prabhas, Palpa
  • Sumnima Acharya Department of Radiology, Lumbini Medical College and Teaching Hospital, Prabhas, Palpa
  • Keshav Raj Bhandari Department of Community Medicine, Lumbini Medical College and Teaching Hospital, Prabhas, Palpa
DOI: https://doi.org/10.33314/jnhrc.v18i3.2534

Abstract

Background: The clavicle, modified long bone, presents morphological and bilateral variations. This may be due to genetic factors, hormones, or environmental and occupational influences. Anthropometric studies in clavicle of Nepalese population using radiograph has not been reported to best of our knowledge. This study, aimed to determine the sexual dimorphism and bilateral asymmetry of clavicle in Nepalese Population using Postero-Anterior Chest X Ray.

Methods: Chest x-rays with normal and clearly visible both clavicles of 1260 Nepalese adults (591 male, 669 female), aged above 20 years were utilized. Inbuilt software “Computed Radiography Fuji Computer System 7” was used for measurements (in centimeter) of sternal head length, acromial end length, mid shaft diameter and length of clavicle. Demarcating point and identification point were calculated. Patients having history of clavicles fractures in the past were excluded.

Results:  All the parameters in male is greater than female which is significant except Length/Mid Shaft Diameter. Similarly, all the parameters of right clavicle is significantly greater than left clavicle in both sexes except Sternal Head Length and Mid Shaft Diameter. Demarcating point calculated from length of the clavicle (right >16.17, left >16.10 for male and right <11.20, left <10.65 for female) and Mid Shaft Diameter (right >1.33, left >1.38 for male and right <0.66 and left <0.67 for female) are important parameters to determine sex.   

Conclusions:The clavicle shows significant sexual dimorphism and bilateral asymmetry in Nepalese population. The result of this study is helpful to anthropologist and forensic medicine.

Keywords: Anthropometry; clavicle; demarcating point; postero-Anterior chest x-rays; sexual dimorphism

Published
2020-11-14
How to Cite
KCS., ShresthaS., AcharyaS., & BhandariK. R. (2020). Clavicle Morphometry for Sexual Dimorphism and Bilateral Asymmetry: Radiographic Assessment . Journal of Nepal Health Research Council, 18(3), 448-452. https://doi.org/10.33314/jnhrc.v18i3.2534
Issue
Vol. 18 No. 3 (2020): Vol. 18 No. 3 Issue 48 Jul-Sep 2020
Section
Original Article

Copyright (c) 2020 Sudikshya KC, Subina Shrestha, Sumnima Acharya, Keshav Raj Bhandari

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