Abstract: Scaffold-guided regeneration performs an essential function in the therapy of severe bone defects caused by trauma, tumor, resection, etc. Magnetic scaffolds have been demonstrated to influence cellular metabolic behavior by themselves or external magnetic fields. In particular, the synergistic function of magnetic scaffolds and external magnetic fields can effectively control the release of drugs and activate channels on the cell surface to mediate a series of osteogenesis-related pathways, promoting cell differentiation and tissue regeneration. Additionally, the magne-tic scaffolds have potential applications in thermal therapy, magnetic resonance imaging, targeted delivery, etc. The magnetic scaffolds provide a certain guarantee for improving the repair efficiency of bone tissue engineering. The composite methods, preparation technologies and mechanism of promoting bone regeneration for the magnetic scaffolds, as well as the synergistic function of magnetic field and magnetic scaffold, are reviewed in this paper. It also summarizes the applicatory research of several magnetic scaffolds in bone tissue repair engineering.
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