AN INVESTIGATION ON LOW-ELASTIC-MODULUS METALLIC ORTHOPEDIC IMPLANTS

Abstract

Materials for biomedical implants have been explored for decades for their biocompatibility and mechanical properties. However, daily wear and tear may cause debris of the implants to enter the nearby cells or tissues, causing various harmful effects. Therefore, it is vital to assess the bone implant material's toxicity. Based on the cytotoxicity results of the Titanium/SS316L/Magnesium particles, a hybrid implant composed of both titanium and magnesium is created by inkjet printing and infiltration. Magnesium is designed to be slowly released to mitigate the detrimental effects of titanium particles. Moreover, different lattice structures made of SS316L were produced by SLM to modify the Gibson-Ashby model for a more accurate prediction of mechanical properties to avoid the stress shielding effect. Lastly, in addition to the usual biomaterials, a new Fe-based metallic glass was produced and proven to have enhanced properties than SS316L. Further research is essential to produce more suitable bone implants.