Journal
JOURNAL OF BIOMECHANICS
Volume 42, Issue 11, Pages 1726-1731Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jbiomech.2009.04.017
Keywords
Distal radius; Colles' fracture; HR-pQCT; Finite element; Homogenization
Categories
Ask authors/readers for more resources
Osteoporotic fractures are harmful injuries and their number is on the rise. Distal radius fractures are precursors of other osteoporotic fractures. The wrist's bony geometry and trabecular architecture can be assessed in vivo using the recently introduced HR-pQCT. The goal of this study was the validation of a newly developed HR-pQCT based anatomy specific FE technique including separation of cortical and trabecular bone regions using an experimental model for producing Colles' fractures. Mechanical compression tests of 21 embalmed human radii were conducted. Continuum level FE models were built using HR-pQCT images of the bones and nonlinear analyses were performed using boundary conditions highly similar to the mechanical tests. Density and fabric based material properties were taken from previous tests on biopsies and no adjustments were made. Numerical results provided good prediction of the experimental stiffness (R-2 = 0.793) and even better for strength (R-2 = 0.874). High damage zones of the FE models coincided with the actual failure patterns of the specimens. These encouraging results allow to conclude that the developed method represents an attractive and efficient tool for simulation of Colles' fracture. (c) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available