Additively Manufactured Biodegrabable Metal Implants

Additive manufacturing (AM) can produce complicated structures accurately and freely, giving the implant a macro and micro geometry, which makes the implant match the patient's defect site and realize the needs for personalized clinical treatment. Thus, AM provides a new manufacturing method for biodegradable metals. Presently, biodegradable metals are the hotspot issues of metallic biomaterials research. Additively-manufactured biodegradable metals are new research field. In this paper, a comprehensive review on the AM of Mg-, Zn-, and Fe-based biodegradable metals, which focuses on their processes and influencing factors, mechanical properties, biodegradation behavior, and biocompatibility, is given. Finally, the future development trend of the AM biomedical metallic materials is explored.