In Vivo Bone Strain and Finiteelement Modeling of the Craniofacial Haft In
Journal of Anatomy J. Anat. (2011) 218, pp112–141 doi: 10.1111/j.1469-7580.2010.01322.x In vivo bone strain and finite-element modeling of the craniofacial haft in catarrhine primates Callum F. Ross,1 Michael A. Berthaume,2 Paul C. Dechow,3 Jose Iriarte-Diaz,1 Laura B. Porro,1 Brian G. Richmond,4 Mark Spencer5 and David Strait6 1Organismal Biology & Anatomy, University of Chicago, Chicago, IL, USA 2Department of Mechanical & Industrial Engineering, University of Massachusetts, Amherst, MA, USA 3Department of Biomedical Sciences, Baylor College of Dentistry, Texas A&M Health Science Center, Dallas, TX, USA 4Department of Anthropology, Center for the Advanced Study of Hominid Paleobiology, The George Washington University, Washington, DC, USA 5Department of Anthropology, Institute of Human Origins, Arizona State University, Tempe, AZ, USA 6Department of Anthropology, University at Albany, Albany, NY, USA Abstract Hypotheses regarding patterns of stress, strain and deformation in the craniofacial skeleton are central to adaptive explanations for the evolution of primate craniofacial form. The complexity of craniofacial skeletal morphology makes it difficult to evaluate these hypotheses with in vivo bone strain data. In this paper, new in vivo bone strain data from the intraorbital surfaces of the supraorbital torus, postorbital bar and postorbital septum, the anterior surface of the postorbital bar, and the anterior root of the zygoma are combined with published data from the supraorbital region and zygomatic arch to evaluate the validity of a finite-element model (FEM) of a macaque cranium during mastication. The behavior of this model is then used to test hypoth- eses regarding the overall deformation regime in the craniofacial haft of macaques.
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