“…While the majority of previous studies assume homogeneous and isotropic material properties for bone (Duda et al, 2002, Anitha et al, 2013, Benli et al, 2008, Fouad, 2010, Ganesh et al, 2005, Moazen et al, 2012, Stoffel et al, 2003, Ma et al, 2013, Ebrahimi et al, 2012, Luo et al, 2013, more complex models generally include either homogeneous orthotropic (Kim et al, 2010, Krishna et al, 2008, Taheri et al, 2012 or heterogeneous isotropic typically derived from CT attenuations (Wieding et al, 2012, Gray et al, 2008, Schileo et al, 2007.…”