Abstract
The discriminant power of the bone volume to determine sex has been rarely studied. The digitalization of the bone allows calculating its volume in a reliable manner. The present study shows the discriminant power of the bone volume of the talus, radius, clavicle and patella in Spanish population. The sample study originates from two contemporary Spanish reference collections located in the Legal Medicine School of Madrid (UCM) and includes the tali of 98 individuals, the radii of 77 individuals, the clavicles of 100 individuals and the patellae of 134 individuals. The sample was digitized using the 3D Picza Laser Scanner and several metric and volumetric variables were calculated. The statistical study was performed by the PASW Statistics 18 software, performing a discriminant analysis to obtain classification functions and intervals. Finally, a validation test was performed on a sample of 20 individuals. For the talus, the best classifying variable was the left total volume, classifying correctly 90.9% of the sample. For the radius, the best classifying variable was the right diaphysis volume, classifying correctly 96.9% of the sample. For the clavicle, the best classifying variable was the right diaphysis volume, classifying correctly 94% of the sample. For the patella, the best classifying variable was the right total volume, classifying correctly 82.4% of the cases. The validation tests confirm the results obtained on the discriminant analysis classifying correctly 90% of the sample of tali, 95% of radii, 100% of clavicles and 93.3% of patellae. In conclusion, bone volume shows a highly discriminant power to determine. The validation tests confirm the applicability of the classification functions over Spanish population.
Published Version
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