This decision support system is freely provided as an aid for profiling skeletal material.
Osteomics has no responsibility for its ultimate use or misuse.
While Osteomics tries to ensure the software is theoretically grounded and
statically accurate, we provide no warranty and make no specific claims as to its
performance or its appropriateness for use in any particular situation.
If a paper is available for any of our tools, please read it before applying the method.
Always keep in mind: you are the expert, these tools are just decision support systems.
They do not have the final word.
Outline Shape Analysis on the Trochlear Constriction and Olecranon Fossa of the Humerus: Insights for Sex Estimation and a New Computational Tool
Saskia Ammer, João d'Oliveira Coelho, Eugénia M. Cunha
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.
Model developed from a subsample of an osteological collection of a
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- 80 female and 71 male distal humeri
Forensic science, forensic anthropology, outline shape analysis,
web application, sex estimation, distal humerus