3D-printed bioactive scaffolds: An emerging strategy for the regeneration of infectious bone defects
Jianye Yang , Jiawei Wang , Yaji Yang , Xudong Su , Zhenghao Xu , Yingkun Hu , Jiahui Lai , Haotian Zhou , Chuanqiang Dai , Zhong Alan Li , Leilei Qin , Ning Hu
International Journal of Bioprinting ›› 2025, Vol. 11 ›› Issue (2) : 79 -138.
3D-printed bioactive scaffolds: An emerging strategy for the regeneration of infectious bone defects
In orthopedics, infectious bone defects face a formidable challenge, considering the critical issues of infection control and bone regeneration during treatment. Although numerous biomaterials have been developed to address these therapeutic challenges, most fail to meet the high regeneration requirements of infectious bone defects with complex pathological environments. There is an urgent need for the rational design of multifunctional bioactive scaffolds that integrate antimicrobial treatments with bone regeneration capabilities. Three-dimensional (3D) printing, a powerful manufacturing technique, holds great promise in fabricating complex bone tissue engineering scaffolds with highly personalized customization. The 3D-printed bioactive scaffolds possess excellent biocompatibility, outstanding antimicrobial properties, appropriate mechanical strength, and bone regeneration ability, making them a highly attractive, emerging strategy for overcoming the challenges of infectious bone defect repair. This review first discusses the therapeutic challenges of infectious bone defects and the desirable features of ideal bone implants, followed by a systematic overview of recent advancements in 3D printing technologies and biomaterials used to fabricate 3D-printed bioactive scaffolds for infectious bone defects. Finally, we highlight the advantages, potential breakthroughs, and challenges of 3D-printed bioactive scaffolds in repairing infectious bone defects.
3D printing / Infectious bone defects / Bone regeneration / Antimicrobial properties / Bioactive scaffolds
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