Additive manufacturing (AM) techniques provide unprecedented opportunities for the fabrication of metallic implants due to their precise control of complex architectures. However, the development of AM biodegradable magnesium (Mg) components is relatively slow, mostly due to their flammability. This issue includes a report on the challenges related to AM biodegradable Mg implants and corresponding solutions to these challenges, including AM parameter optimization and the structural design optimization of AM Mg scaffolds to meet the functional requirements for tissue engineering scaffolds. When utilized in AM Mg scaffolds, the gyroid structure, which is a triply periodic minimal surface (TPMS) structure with zero mean curvature, exhibits outstanding mechanical properties and excellent degradation performance due to its high surface-to-volume ratio and self-supported features. With the further incorporation of dicyclopentadiene (DCPD) surface coating, AM Mg scaffolds with a gyroid structure are attractive candidates for the next generation of orthopedic implants with complex structures.
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