Recently,
there is a growing interest in developing magnesium (Mg)
based degradable biomaterial. Although corrosion is a concern for
Mg, other physical properties, such as low density and Young’s
modulus, combined with good biocompatibility, lead to significant
research and development in this area. To address the issues of corrosion
and low yield strength of pure Mg, several approaches have been adopted,
such as, composite preparation with suitable bioactive reinforcements,
alloying, or surface modifications. This review specifically focuses
on recent developments in Mg-based metal matrix composites (MMCs)
for biomedical applications. Much effort has gone into finding suitable
bioactive, bioresorbable reinforcements and processing techniques
that can improve upon existing materials. In summary, this review
provides a comprehensive overview of existing Mg-based composite preparation
and their mechanical and corrosion properties and biological responses
and future perspectives on the development of Mg-based composite biomaterials.