“…The ability of the material to prevent surface mechanical failures under high load-bearing conditions Ti-6Al-4V/HA, 101,180 Ti, 181 graphene/HA, 182,183 Al 2 O 3 /HA, 184 CNT/HA 185,186 Non-carcinogenic Must not elicit carcinogenic material to form an inflammation or cancer Tricalicum Phosphate (TCP), 187 HA, 187 collagen/HA, 88 PLA/ HA, 188 Sr/HA, 189 and others 78,190 Nontoxic Must not release toxic substances that harm the body environment TCP, 187 HA, 187 HA/HA-Mg bi-layer, 191 HA/Al 2 O 3 -SiO 2 bi-layer, 192 GO/CS/HA, 91 PLA-HA, 164 CTAB/HA, 116 Sr/HA, 165…”