4.2 Article Proceedings Paper

Index and ring finger ratio- a morphologic sex determinant in South-Indian children

Journal

FORENSIC SCIENCE MEDICINE AND PATHOLOGY
Volume 6, Issue 4, Pages 255-260

Publisher

HUMANA PRESS INC
DOI: 10.1007/s12024-010-9156-y

Keywords

Forensic anthropology; Identification; Sex determination; Finger length; Index and ring finger ratio

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To investigate the sexual dimorphism of index and ring finger ratio in South Indian children. The index finger length (IFL) and the ring finger length (RFL) were measured in 350 subjects aged between 2 and 12 years using a steel measuring tape. The index and ring finger ratio was computed by dividing index finger length by ring finger length. The data obtained were analyzed statistically using SPSS, version 11.0. Mean RFL was greater than mean IFL in both males and females. The mean ring finger length was longer in males than females and mean index finger length longer in females than males. However, these sex differences observed for index and ring finger length were not significant in both hands. Statistically significant sex differences were observed from the derived index and ring finger ratio. The mean index and ring finger ratio was found to be higher in females than males. Significant correlation was found between age and index and ring finger lengths. Index and ring finger ratio however, did not show any significant correlation with age. This study suggests that among South-Indian children, the index and ring finger ratio of 0.97 and less is indicative of male, and a ratio of more than 0.97 is indicative of female sex. The ratio can be a useful sex indicator irrespective of the age of the individual.

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