Femur Auxetic Meta-Implants with Tuned Micromotion Distribution.

ABSTRACT: Stress shielding and micromotions are the most significant problems occurring at the bone-implants interface due to a mismatch of their mechanical properties. Mechanical 3D metamaterials, with their exceptional behaviour and characteristics, can provide an opportunity to solve the mismatch of mechanical properties between the bone and implant. In this study, a new porous femoral hip meta-implant with graded Poisson's ratio distribution was introduced and its results were compared to three other femoral hip implants (one solid implant, and two porous meta-implants, one with positive and the other with a negative distribution of Poisson's ratio) in terms of stress and micromotion distributions. For this aim, first, a well-known auxetic 3D re-entrant structure was studied analytically, and pr

SUBMITTER: Ghavidelnia N 

PROVIDER: S-EPMC7795950 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature