“…For example, in almost all cases reported in this review, complete penetration of bone throughout the lattice interior was lacking. While this review did not broach the topic of surface modification for AM due to a lack of publications reporting in vivo performance, considerable literature citing in vitro methods for modifying implant pore chemistry and topography is available, including acid etching [70] , sandblasting [70] , micro-arc oxidation [121] , dip coating [122] , or other methods [123] . Surface modification approaches to regulate osteoconduction, which are widely effective on conventionally cast porous and non-porous metallic implants [124] , [125] , [126] , should receive more attention, especially in a systematic manner to compare their efficacy when applied to the interior of a porous implant.…”