| Abstract: | The new and emerging additive manufacturing technologies in recent years make it possible to fabricate bone tissue scaffolds with highly complex geometry structure. Based on the versatile functionality requirements, the structures of bone tissue scaffolds are firstly categorized into two groups, more precisely, the regular porous structure and the irregular ones, according to their geometries. Then the design methods for above classified structures are reviewed respectively. The triply periodic minimal surfaces (TPMS) based and topology optimization based design methods, which are very suitable for additive manufacturing, are especially emphasized. Finally, technical challenges for the design methods of bone tissue scaffolds are analyzed, and the possible developing trend in this field is prospected. |
