Degradable magnesium-hydroxyapatite interpenetrating phase composites processed by current assisted metal infiltration in additive-manufactured porous preforms

•Introduction of novel hydroxyapatite-magnesium interpenetrating phase composites.•Produced by ceramic additive manufacturing and liquid metal infiltration.•Magnesium provides mechanical strength in the range of cortical bone.•An osteoconductive hydroxyapatite scaffold is generated after magnesium degradation.•The structural and biological properties are controlled through the digital design.