Morphometric sex estimation from 3D computed tomography os coxae model and its validation in skeletal remains

Abstract

In the last decade, the advances in imaging technologies have intensified the use of multislice computed tomography (MSCT) for anthropological purposes. The published literature has proved it to be a suitable tool for establishing sexually dimorphic characteristics in different anatomical areas. In this context, the main purpose of the present study was to explore the accuracy of traditional morphometric method when applied to data acquired in three-dimensional (3D) reconstructed os coxae of living Spanish population, to develop a series of statistically robust patterns for sex assessment and to test their validity in innominate remains. For this purpose, 150 volume-rendered innominate CT scans were selected to examine nine interlandmark linear distances by means of descriptive statistics and discriminant function analyses (DFA) employing the jackknife procedure for cross-validations. Five measurements were sexually dimorphic. Acetabular diameter was the single most accurate predictor. This, combined with innominate height and innominate breadth, contributed very significantly to sex estimation. Overall, classification accuracies were 89.3-95.3 % (89.3-94.7 % after cross-validation), with a sex-bias lower than 5 %. The second validation approach performed on a sample of 96 individuals from another contemporary Spanish reference collection comprising dry bones showed the high percentage of accurate classification (83.3-95.8 %). In conclusion, the assessment of sex using cross-sectional MSCT images of the os coxae is possible and the discriminant functions obtained on Spanish living individuals can also be effective for estimating sex from skeletal remains.

Sex Determination Using Three-Dimensional Computed Tomography of Pelvis Measurements in Adult Egyptian population..

“…It also agrees with Djorojevic et al, 2014, who concluded the presence of greatest differences between both sexes in innominate height (IHM) as it reflects the overall size of the body and it is it is generally higher in men [4].…”

“…There are not general diagnostic criteria that can be transferred from one population to another. Forensic anthropologists are attempting to develop population-specific objective standards that can be used in identification of human skeletal remains [4,9]. whites and blacks, they concluded that the accuracy of sciatic notch range from 73% to 77%, and attributed that it is quite difficult to quantify the differences in greater sciatic notch size, angle, and shape [11].…”

Estimation of Purkait’s triangle method and alternative models for sex assessment from the proximal femur in the Spanish population

“…The highly accurate reliability of the pelvis to provide information about the sex of adult individuals has been widely recognized [e.g., [1][2][3]. Nevertheless, being often unavailable or insufficiently preserved to yield relevant set of data for assessing the sex, there is an imperative need to accomplish the positive identification from other skeletal elements, preferable long bones [4,5].…”

The value of radiometry in sex assessment of bone fragments: A study on the radius in a modern Greek population

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