A comparative biomechanical study of bone ingrowth in two porous hydroxyapatite bioceramics

► Apaceram-AX® shows enhanced initial bone regeneration and a faster increase in stiffness compared with NEOBONE®. ► Micropores in Apaceram-AX® results in favorable rough surface and leads to progressive degradation. ► Strain energy density exhibits severe concentration in the early postoperative period of NEOBONE® and afterwards such concentration becomes less.