Publication details

Technical note: A novel Geometric Morphometric approach to the study of long bone shape variation.

Investor logo


Year of publication 2012
Type Article in Periodical
Magazine / Source American Journal of Physical Anthropology
MU Faculty or unit

Faculty of Science

Field Applied statistics, operation research
Keywords tibia; hominoids; semilandmarks; artificial affine transformation; locomotion
Attached files
Description Procrustes-based geometric morphometrics (GM) is most often applied to problems of craniofacial shape variation. Here, we demonstrate a novel application of GM to the analysis of whole postcranial elements in a study of 77 hominoid tibiae. We focus on two novel methodological improvements to standard GM approaches: 1) landmark configurations of tibiae including 15 epiphyseal landmarks and 483 semilandmarks along articular surfaces and muscle insertions along the tibial shaft and 2) an artificial affine transformation that sets moments along the shaft equal to the sum of the moments estimated in the other two anatomical directions. Diagrams of the principal components of tibial shapes support most differences between human and non-human primates reported previously. The artificial affine transformation proposed here results in an improved clustering of the great apes that may prove useful in future discriminant or clustering studies. Since the shape variations observed may be related to different locomotor behaviors, posture, or activity patterns, we suggest that this method be used in functional analyses of tibiae or other long bones in modern populations or fossil specimens. Am J Phys Anthropol 149:628–638, 2012.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info