INTERVERTEBRAL IMPLANT MADE OF TITANIUM ALLOY VS. PEEK POLYMER

Ti6Al4V alloy – density 4.05 g/cm³; used since 2011 in 3D-Ti-EBM printing (radiologically opaque) PEEK polymer – density 1.3 g/cm³; used since 2004 (good radiographic radiolucency) The titanium alloy is approximately 3 times denser and heavier than PEEK