Biomechanics of Magnesium-Based Implant During Tissue Repair

Biodegradable (bioabsorbable) implants provide support and fixation to the damaged tissues temporarily. After tissue repair, the implants fully degrade and are absorbed by human body, avoiding many disadvantages of permanent implants. Magnesium (Mg) and its alloys are suitable for biodegradable load-bearing implants due to their good mechanical properties, biodegradability and biocompatibility. Mg-based implants are in the biomechanical environments during tissue repair. The degradation (corrosion) behaviors under loadings are important for the implants. In this chapter, the development, degradation mechanism and study method of Mg-based implants were introduced, and the effects of biomechanical factors on the degradation behaviors of Mg-based implants were investigated by numerical simulation and experiments.