Outline Shape Analysis on the Trochlear Constriction and Olecranon Fossa of the Humerus: Insights for Sex Estimation and a New Computational Tool.
distal humerus
forensic anthropology
forensic science
outline shape analysis
sex estimation
web application
Journal
Journal of forensic sciences
ISSN: 1556-4029
Titre abrégé: J Forensic Sci
Pays: United States
ID NLM: 0375370
Informations de publication
Date de publication:
Nov 2019
Nov 2019
Historique:
received:
28
01
2019
revised:
19
03
2019
revised:
08
05
2019
accepted:
13
05
2019
pubmed:
1
6
2019
medline:
13
11
2019
entrez:
1
6
2019
Statut:
ppublish
Résumé
Sex estimation through visual analysis of the distal humerus can contribute to establishing the biological profile of an unidentified skeletal individual. Using statistical shape modeling, the trochlear constriction open curves and olecranon fossa closed outlines of 151 humeri were digitized and analyzed. The shape configurations exhibited strikingly different degrees of sexual dimorphism when evaluated using linear discriminant analysis with leave-one-out cross-validation. The trochlear constriction performed poorly, correctly classifying 63.6% of the individuals. However, the olecranon fossa showed high sexual dimorphism, presenting a 94.0% accuracy. A simpler model using only two principal components was also generated. While the accuracy is slightly inferior (88.1%), it has the advantage of being constrained to bidimensional components that were translated into morphoscopic variables within a simulator interface. This allowed us to implement the method through a web application that does not require users to be trained in landmark digitization or have knowledge of geometric morphometrics.
Identifiants
pubmed: 31150127
doi: 10.1111/1556-4029.14096
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1788-1795Subventions
Organisme : Portuguese Foundation for Science and Technology (FCT)
ID : SFRH/BD/122306/2016
Informations de copyright
© 2019 American Academy of Forensic Sciences.
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