Sex Determination from Calcaneus in Thais

Skeleton plays a very important role in forensic anthropology where sex determination is the first step of individual identification. This study focused in sex determination by using calcaneus in Thais. Two hundred skeletons (male 115, female 85) adult calcanei from Anatomy Department of Medicine, C...

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Main Authors: Sunan Wanpradab, Sukhon Prasitwatthanasaree, Pasuk Mahakkanukrauh
Format: Article
Language:English
Published: Chaing Mai University 2011-01-01
Series:Journal of Associated Medical Sciences
Subjects:
Online Access:https://www.tci-thaijo.org/index.php/bulletinAMS/article/view/60047
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author Sunan Wanpradab
Sukhon Prasitwatthanasaree
Pasuk Mahakkanukrauh
author_facet Sunan Wanpradab
Sukhon Prasitwatthanasaree
Pasuk Mahakkanukrauh
author_sort Sunan Wanpradab
collection DOAJ
description Skeleton plays a very important role in forensic anthropology where sex determination is the first step of individual identification. This study focused in sex determination by using calcaneus in Thais. Two hundred skeletons (male 115, female 85) adult calcanei from Anatomy Department of Medicine, Chiang Mai University were studied. The ages of individuals ranged obtained from 26-94 years with average of 67.6 years. Seven parameters of both left and right calcaneus in “millimeter” included maximum length (ML), minimum width (MW), body height (BH), load arm length (LAL), load arm width (LAW) dorsal articular facet length (DAL) and dorsal articular facet width (DAW) were measured. Descriptive statistics were determined for means and standard deviation. Student’s t-test was used to compare all average variables between male and female and it was significant population difference (p>0.05). Sex determination according to discriminant analysis (stepwise method) for two discriminants derived from left and right calcaneus could be calculated by the equation:      YL = 0.069ML + 0.106BH + 0.174DAL + 0.402DAW – 22.005      YR = 0.075ML + 0.097LAW + 0.144DAL + 0.434DAW – 22.044      Sectioning point of two equations are -0.418 and -0.421 respectively. The result higher than sectioning point, was classified as male and lower the level were defined as females. Left calcaneus showed 90.5% (male 91.3%, female 89.4%) accuracy in sex determination and right calcaneus 91% (male 90.4%, female 91.8%).
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spelling doaj.art-00565e8cd0ac46c79665d99d94974e462022-12-21T18:37:25ZengChaing Mai UniversityJournal of Associated Medical Sciences2539-60562539-60562011-01-01441535360047Sex Determination from Calcaneus in ThaisSunan WanpradabSukhon PrasitwatthanasareePasuk MahakkanukrauhSkeleton plays a very important role in forensic anthropology where sex determination is the first step of individual identification. This study focused in sex determination by using calcaneus in Thais. Two hundred skeletons (male 115, female 85) adult calcanei from Anatomy Department of Medicine, Chiang Mai University were studied. The ages of individuals ranged obtained from 26-94 years with average of 67.6 years. Seven parameters of both left and right calcaneus in “millimeter” included maximum length (ML), minimum width (MW), body height (BH), load arm length (LAL), load arm width (LAW) dorsal articular facet length (DAL) and dorsal articular facet width (DAW) were measured. Descriptive statistics were determined for means and standard deviation. Student’s t-test was used to compare all average variables between male and female and it was significant population difference (p>0.05). Sex determination according to discriminant analysis (stepwise method) for two discriminants derived from left and right calcaneus could be calculated by the equation:      YL = 0.069ML + 0.106BH + 0.174DAL + 0.402DAW – 22.005      YR = 0.075ML + 0.097LAW + 0.144DAL + 0.434DAW – 22.044      Sectioning point of two equations are -0.418 and -0.421 respectively. The result higher than sectioning point, was classified as male and lower the level were defined as females. Left calcaneus showed 90.5% (male 91.3%, female 89.4%) accuracy in sex determination and right calcaneus 91% (male 90.4%, female 91.8%).https://www.tci-thaijo.org/index.php/bulletinAMS/article/view/60047discriminant analysissectioning pointforensic anthropologycalcanei
spellingShingle Sunan Wanpradab
Sukhon Prasitwatthanasaree
Pasuk Mahakkanukrauh
Sex Determination from Calcaneus in Thais
Journal of Associated Medical Sciences
discriminant analysis
sectioning point
forensic anthropology
calcanei
title Sex Determination from Calcaneus in Thais
title_full Sex Determination from Calcaneus in Thais
title_fullStr Sex Determination from Calcaneus in Thais
title_full_unstemmed Sex Determination from Calcaneus in Thais
title_short Sex Determination from Calcaneus in Thais
title_sort sex determination from calcaneus in thais
topic discriminant analysis
sectioning point
forensic anthropology
calcanei
url https://www.tci-thaijo.org/index.php/bulletinAMS/article/view/60047
work_keys_str_mv AT sunanwanpradab sexdeterminationfromcalcaneusinthais
AT sukhonprasitwatthanasaree sexdeterminationfromcalcaneusinthais
AT pasukmahakkanukrauh sexdeterminationfromcalcaneusinthais