Sexual dimorphism of the index to ring finger ratio in South Indian adolescents

Tanuj Kanchan, G. Pradeep Kumar, Ritesh G. Menezes, Prateek Rastogi, P. P.Jagadish Rao, Anand Menon, B. Suresh Kumar Shetty, Y. P.Raghavendra Babu, Francis N.P. Monteiro, Prashantha Bhagavath, Vinod C. Nayak

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Sex determination from prepubertal human remains is a challenge for forensic experts and physical anthropologists worldwide as definitive sexual traits are not manifested until after the full development of secondary sexual characters that appear during puberty. The research was undertaken in 350 South Indian adolescents to investigate sexual dimorphism of the index and ring finger ratio. The index finger length (IFL) and the ring finger length (RFL) were measured in millimeters in each hand and the index and ring finger ratio was computed by dividing the index finger length by the ring finger length. Mean RFL was greater than mean IFL in both males and females. Mean RFL was significantly higher in males. The index and ring finger ratio showed a statistically significant difference between males and females (p ≤ 0.001). The index and ring finger ratio was found to be higher in females (0.99) when compared to their male counterparts (0.95). The index and ring finger ratio thus shows sexual dimorphism in the South Indian adolescents that may prove useful to determine the sex of an isolated hand when it is subjected for medicolegal examination. The study suggests that a ratio of 0.97 and less is suggestive of male sex, while a ratio of more than 0.97 is suggestive that the hand is of female origin among South Indian adolescents.

Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalJournal of Forensic and Legal Medicine
Volume17
Issue number5
DOIs
Publication statusPublished - 01-07-2010

Fingerprint

Sex Characteristics
Fingers
adolescent
Hand
puberty
Sexual Development
expert
Puberty
examination

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Law

Cite this

Kanchan, Tanuj ; Kumar, G. Pradeep ; Menezes, Ritesh G. ; Rastogi, Prateek ; Rao, P. P.Jagadish ; Menon, Anand ; Shetty, B. Suresh Kumar ; Babu, Y. P.Raghavendra ; Monteiro, Francis N.P. ; Bhagavath, Prashantha ; Nayak, Vinod C. / Sexual dimorphism of the index to ring finger ratio in South Indian adolescents. In: Journal of Forensic and Legal Medicine. 2010 ; Vol. 17, No. 5. pp. 243-246.
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Kanchan, T, Kumar, GP, Menezes, RG, Rastogi, P, Rao, PPJ, Menon, A, Shetty, BSK, Babu, YPR, Monteiro, FNP, Bhagavath, P & Nayak, VC 2010, 'Sexual dimorphism of the index to ring finger ratio in South Indian adolescents', Journal of Forensic and Legal Medicine, vol. 17, no. 5, pp. 243-246. https://doi.org/10.1016/j.jflm.2010.02.009

Sexual dimorphism of the index to ring finger ratio in South Indian adolescents. / Kanchan, Tanuj; Kumar, G. Pradeep; Menezes, Ritesh G.; Rastogi, Prateek; Rao, P. P.Jagadish; Menon, Anand; Shetty, B. Suresh Kumar; Babu, Y. P.Raghavendra; Monteiro, Francis N.P.; Bhagavath, Prashantha; Nayak, Vinod C.

In: Journal of Forensic and Legal Medicine, Vol. 17, No. 5, 01.07.2010, p. 243-246.

Research output: Contribution to journalArticle

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T1 - Sexual dimorphism of the index to ring finger ratio in South Indian adolescents

AU - Kanchan, Tanuj

AU - Kumar, G. Pradeep

AU - Menezes, Ritesh G.

AU - Rastogi, Prateek

AU - Rao, P. P.Jagadish

AU - Menon, Anand

AU - Shetty, B. Suresh Kumar

AU - Babu, Y. P.Raghavendra

AU - Monteiro, Francis N.P.

AU - Bhagavath, Prashantha

AU - Nayak, Vinod C.

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N2 - Sex determination from prepubertal human remains is a challenge for forensic experts and physical anthropologists worldwide as definitive sexual traits are not manifested until after the full development of secondary sexual characters that appear during puberty. The research was undertaken in 350 South Indian adolescents to investigate sexual dimorphism of the index and ring finger ratio. The index finger length (IFL) and the ring finger length (RFL) were measured in millimeters in each hand and the index and ring finger ratio was computed by dividing the index finger length by the ring finger length. Mean RFL was greater than mean IFL in both males and females. Mean RFL was significantly higher in males. The index and ring finger ratio showed a statistically significant difference between males and females (p ≤ 0.001). The index and ring finger ratio was found to be higher in females (0.99) when compared to their male counterparts (0.95). The index and ring finger ratio thus shows sexual dimorphism in the South Indian adolescents that may prove useful to determine the sex of an isolated hand when it is subjected for medicolegal examination. The study suggests that a ratio of 0.97 and less is suggestive of male sex, while a ratio of more than 0.97 is suggestive that the hand is of female origin among South Indian adolescents.

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