"polylactic acid materials (PLA and PLDLA), polyaryletherketone (PAEK), carbon-reinforced PEEK, polysulfone, polyetherimide, polyimide, ultra-high molecular weight polyethylene (UHMWPE), cross-linked UHMWPE, and/or polycarbonate, cobalt-chromium alloys, titanium alloys, nickel titanium alloys, aluminum, stainless steel alloys, and/or NITINOL or other memory alloy, ceramic materials such as aluminum" . . . .