Disclaimer: The research presented in this manuscript was not conducted under the auspices of the New York City Office of Chief Medical Examiner (NYC-OCME). The opinions expressed in this article are those of the authors and do not reflect the opinions of the NYC-OCME.
The utility of osteon shape and circularity for differentiating human and non-human Haversian bone†
Article first published online: 14 JUN 2012
Copyright © 2012 Wiley Periodicals, Inc.
American Journal of Physical Anthropology
Volume 149, Issue 1, pages 84–91, September 2012
How to Cite
Dominguez, V. M. and Crowder, C. M. (2012), The utility of osteon shape and circularity for differentiating human and non-human Haversian bone. Am. J. Phys. Anthropol., 149: 84–91. doi: 10.1002/ajpa.22097
- Issue published online: 17 AUG 2012
- Article first published online: 14 JUN 2012
- Manuscript Accepted: 24 APR 2012
- Manuscript Received: 17 OCT 2011
- bone histology;
- skeletal biology
Distinguishing human from non-human bone fragments is usually accomplished by observation of gross morphology. When macroscopic analysis is insufficient, histological approaches can be applied. Microscopic features, like plexiform bone or osteon banding, are characteristic of non-humans. In the absence of such features, distinguishing Haversian bone as either human or non-human proves problematic. This study proposes a histomorphometric approach for classifying species from Haversian bone. Two variables, osteon area (On.Ar.) and circularity (On.Cr.), are examined. Measurements were collected from three species (deer, dog, human) represented by various skeletal elements; only ribs were available for humans (ribs: deer n = 6, dog n = 6, human n = 26; humeri: deer n = 6, dog n = 6; femora: deer n = 6, dog n = 6). Qualitative analysis comparing human to non-human On.Ar. demonstrated that human ribs have larger mean On.Ar. (0.036 mm2) than non-human ribs (deer = 0.017 mm2, dog = 0.013 mm2). On.Cr. in the ribs showed minor differences between species (deer = 0.877; dog = 0.885; human = 0.898). Results demonstrated no significant difference across long bone quadrants in long bones. Discriminant analyses run on the means for each sample demonstrated overlap in deer and dog samples, clustering the non-human and human groups apart from each other. Mean On.Cr. proved a poor criterion (ribs only: 76.3%, pooled elements: 66.1%), while mean On.Ar. proved useful in identifying human from non-human samples (ribs only: 92.1%, pooled elements: 93.5%). When variables were combined, accuracy increased to 100% correct classification for rib data and 98.4% when considering data from all elements. These results indicate that On.Ar. and On.Cr. are valuable histomorphometric tools for distinguishing human from non-human Haversian bone. Am J Phys Anthropol, 2012. © 2012 Wiley Periodicals, Inc.