Review
Comparison of orthopedic implants 3D printed with porous titanium versus porous tantalum and prospects of their applications
Wu Hao, Guo Zheng
Published 2020-10-15
Cite as Chin J Orthop Trauma, 2020, 22(10): 916-920. DOI: 10.3760/cma.j.cn115530-20200609-00382
Abstract
3D printing technology used to prepare orthopedic metal implants with complex morphology has advantages of rapidness and efficiency. Titanium and titanium alloys are currently the mainstream raw materials for fabrication of orthopedic implants, because they are characterized by good biocompatibility, high specific strength and low elastic modulus and clinical trials have demonstrated their reliable and good bone-healing effects. Tantalum presents physical and chemical properties similar to those of titanium, but is reported to be osteoinductive. Therefore, in recent years, 3D printed personalized implants with porous tantalum have attracted more attention. However, the related researches are still not enough. This review summarizes the recent researches on porous tantalum and porous titanium at home and abroad, compares their features in manufacturing process, mechanical property, biocompatibility, surface modification, osseointegration and clinical application, and discusses the prospects of their application in the field of 3D printed personalized orthopedic implants.
Key words:
Prostheses and implants; Titanium; Tantalum; 3D printing
Contributor Information
Wu Hao
Department of Orthopaedics, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
Guo Zheng
Department of Orthopaedics, Xijing Hospital, Air Force Medical University, Xi'an 710032, China