Biodegradable magnesium alloys as new biomedical implant materials have been extensively studied because of their notable biodegradability over traditional bio-inert metals. However, the extreme degradation rate of pure magnesium leads to the loss of its mechanical integrity before the tissue recovers completely. The solutions to this challenge are as follows: (1) purification, (2) alloying, (3) surface modification, and (4) biodegradable magnesium-matrix composites (BMMCs) synthesis. Owing to the tunability of mechanical properties, the adjustability of degradation rate, and the improvement of biocompatibility, BMMCs reinforced with bioactive reinforcements have promising applications as a new generation of biomedical implants. In this review, the processing methods, Mg matrix, and reinforcement phases of BMMCs are discussed. Moreover, the review comprehensively discusses various BMMCs synthesized thus far, aiming to show the governing aspects of the achieved mechanical properties, corrosion behavior, and biocompatibility. Finally, this paper also discusses the research direction and further development areas for these materials.

由于可生物降解的镁合金具有比传统生物惰性金属显着的生物降解性，因此已广泛地研究了可生物降解的镁合金作为新型生物医学植入材料。然而，在组织完全恢复之前，纯镁的极高降解速率导致其机械完整性的丧失。解决这一挑战的方法如下：（1）纯化，（2）合金化，（3）表面改性和（4）可生物降解的镁基复合材料（BMMC）合成。由于机械性能的可调节性，降解速率的可调节性以及生物相容性的提高，以生物活性增强剂增强的BMMC作为新一代生物医学植入物具有广阔的应用前景。在这篇综述中，讨论了BMMC的加工方法，Mg基质和增强相。此外，综述全面讨论了迄今为止合成的各种BMMC，旨在显示所获得的机械性能，腐蚀行为和生物相容性的控制方面。最后，本文还讨论了这些材料的研究方向和进一步的发展领域。