 Tissue scaffolding using polymers and metals has been utilized in tissue regeneration to facilitate new tissue or organ formation with ideal balance between mechanical support and mass transport, and biodegradable metal scaffolds have shown promising results with tailored degradation behavior. Computation-aided solid free-form fabrication techniques can be easily applied to metals for scaffold making, and further optimization in porosity design using material properties and fabrication techniques could make porous biodegradable metals potential materials for hard tissue scaffolds. This article was authored by A. H. Uzop, A. A. Baki, N. A. Shaharam, and others.