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Sex estimation using radius in a Thai population
Wiraporn Jongmuenwai1, Matee Boonpim1, Tawachai Monum1
1Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Anatomy & Cell Biology
|July 22, 2021
Summary
Forensic osteologists can estimate sex from incomplete radius bones in the Northern Thai population. Key measurements like maximum radial head diameter and distal end width show high accuracy for sex determination.
Area of Science:
- Forensic Anthropology
- Osteology
- Human Identification
Background:
- Sex estimation is crucial in forensic osteology for identifying human remains.
- The radius bone, even when incomplete, holds potential for sex determination.
Purpose of the Study:
- To investigate the efficacy of incomplete radius bones for sex estimation in a Northern Thai population.
- To identify specific radial measurements that are most accurate for sex determination.
Main Methods:
- Analysis of 200 left-right pairs of radius bones from 100 males and 100 females.
- Measurement of various radial parameters, including maximum head diameter (MDH) and distal end width (RDEW).
- Application of stepwise discriminant function analysis to identify the best predictors for sex estimation.
Main Results:
- Maximum head diameter (MDH) achieved accuracies of 92.0% (right) and 90.5% (left).
- Distal end width of the radius (RDEW) showed accuracies of 91.5% (right) and 89.0% (left).
- Proximal radius measurements yielded higher accuracies (95.0% right, 93.0% left) than distal measurements.
Conclusions:
- Incomplete radius bones are reliable indicators for sex estimation in the Northern Thai population.
- Specific measurements from both proximal and distal radius fragments offer significant accuracy in sex determination.
- This study validates the utility of radial bone fragments in forensic identification contexts.
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