Figure 4.

Density growth of the proximal femur for an energy-driven mass source, ρ̇₀ = R₀ with $R_0=k_{\rho }[{[{\rho }_0/{\rho }_0^{*}]}^{-m}{\psi }_0-{\psi }_0^{*}]$, according to equations (17) and (39). Photograph of a thin section, left, demonstrates microstructural arrangement of trabeculae in the femur head aligned with the axis of maximum principal stress [112]. Computational simulation of density growth, right, predicts higher bone densities in regions of large mechanical stress and lower bone densities in unloaded regions [64, 65].