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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Acta Biomater. 2013 Jan 19;9(5):6663–6674. doi: 10.1016/j.actbio.2013.01.014

Figure 3.

Figure 3

Contours of principal tensile (A) and compressive (B) strains around a screw-type implant as determined experimentally in a mock interface using DISMAP and micro-CT images. Axisymmetric finite element simulations for groups 4 and 5 are shown in C and D. For 150 μm motion of a screw implant, tensile strains exceeded 100% at crests of the screw threads and beneath the screw, while compressive strain magnitudes exceeded 30% at the crests of the screws. (N.B. The contour plots of tensile and compressive strain as displayed here on the left and right, respectively, should not be interpreted as indicating that only tensile strain occurred on the left side of the implant and only compressive strains occurred on the right side of the implant; instead in this axisymmetric FE model, one should mentally revolve each strain contour 360° around the middle vertical axis to construct the net strain distribution.)