Fig. 2.

Appropriate Young's modulus of the Mg-based orthopaedic implants. (A) FEA model of the trabecular bone with insertion of an interference screw under 1000 N loading condition from the horizontal direction. The bone model is fixed by restricting all 6° of freedom (DOF), while the interaction between the screw and bone is fixed using a binding constraint. (B) Compared to the Ti group in the FEA model, the Mg group exhibits higher von Mises stress distribution in the peri-screw bone tissue. Further, the maximum stress around the contacting bone along the force direction is 2227 MPa and 1670 MPa for the Mg and the Ti groups, respectively.