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Updated: May 17, 2026
09:47
Spotting Cheetahs: Identifying Individuals by Their Footprints
Published on: May 1, 2016
Footprint ridge density: a new attribute for sexual dimorphism
T Kanchan1, K Krishan, K R Aparna
1Department of Forensic Medicine, Kasturba Medical College, Mangalore, India. tanujkanchan@yahoo.co.in
Summary
Forensic science can estimate sex from footprint ridge density. Females exhibit higher ridge density than males across all analyzed footprint areas, enabling accurate sex determination.
Area of Science:
- Forensic Science
- Anthropology
- Dermatoglyphics
Background:
- Estimating an individual's sex from footprints is crucial in forensic investigations for building biological profiles.
- Ridge density patterns in footprints may exhibit sexual dimorphism.
Purpose of the Study:
- To investigate sex-based differences in ridge density across four distinct footprint regions.
- To assess the accuracy of sex estimation using footprint ridge density.
Main Methods:
- Analysis of 212 footprints from 106 adult Indian subjects.
- Standardized techniques were used to measure ridge density in four specific footprint areas: medial great toe border (F1), ball of great toe (F2), ball of 5th toe (F3), and heel (F4).
- Statistical analysis compared male-female differences and right-left variations.
Main Results:
- Mean footprint ridge density was significantly higher in females than males across all analyzed areas (p<0.05) for both feet.
- No significant right-left differences in ridge density were observed.
- The medial ball area (F3) showed the maximum sex difference, followed by the great toe ball (F2), lateral ball (F3), and heel (F4).
- Overall sex estimation accuracy was 82.6% for right and 83.6% for left footprints.
Conclusions:
- Significant sex differences in footprint ridge density exist in the Indian population.
- Footprint ridge density can be a reliable indicator for sex estimation in forensic contexts.
- The medial ball area of the footprint is the most effective region for sex determination based on ridge density.
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