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Assessment of Child Anthropometry in a Large Epidemiologic Study

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Published on: February 2, 2017

Variability in human external ear anthropometry- Anthropological and forensic applications.

D Rani¹, K Krishan¹, R Sahani¹

¹Department of Anthropology, Panjab University, Sector-14, Chandigarh, India.

La Clinica Terapeutica

|November 25, 2021

Summary

Forensic scientists can use unique ear features for identification. This study found significant sex and side differences in ear measurements in a North Indian population, aiding criminal investigations.

Keywords:

Anthropometry Bilateral differences Forensic anthropology Human ear Sexual dimorphism

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Area of Science:

Forensic Anthropology
Human Anatomy

Background:

The human auricle possesses unique morphological characteristics valuable for forensic identification.
Ear morphology, including features like Darwin's tubercle and variations in helix and lobule, is utilized in criminal investigations.
The ear's accessibility and its variations across sex, sides, and populations make it a subject of anthropometric study.

Purpose of the Study:

To investigate sexual dimorphism and bilateral differences in the morphometry of the human ear.
To establish a database of anthropometric variables for the human ear in a North Indian population for forensic and anthropological applications.

Main Methods:

Anthropometric measurements of the human ear were taken from 140 individuals (71 males, 69 females) aged 18-30 years in North India.
Linear measurements included ear length, ear breadth, and distances related to tragus, antihelix, and helix, along with lobule dimensions.
Statistical analyses, including t-tests, Mann Whitney U, and discriminant function analysis, were employed to evaluate sex and bilateral differences and predict sexual dimorphism.

Main Results:

Significant sex differences (p<0.05) were observed in physiognomic ear length, breadth, ear length above tragus, and distances from tragus to antihelix and helix on both sides.
Significant bilateral differences (p<0.05) were found in most ear measurements for males, and for specific measurements (ear length above tragus, tragus to helix distance, lobule width) in females.
The discriminant function model achieved 82.10% accuracy in determining sexual dimorphism.

Conclusions:

The study confirms the presence of sexual dimorphism and bilateral variations in human ear morphometry within the studied North Indian population.
The collected anthropometric data provides a valuable resource for forensic and anthropological identification purposes.
Ear morphometric analysis offers a reliable method for individualization in forensic science.