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Mechanical simulation considering anisotropy of trabecular scaffolds for 3D-printed biomimetic bone implants

Abstract:

This work proposes the mechanical simulation of scaffold-type custom implants with a trabecular structure created by additive manufacturing. The primary purpose is to offer an alternative to currently used implants that overcomes stress shielding and creates a proper environment for bone resorption. Biomimetic implants were digitally designed from computed tomographies. A finite element analysis (FEA) simulation was performed, and trabecular scaffolds were compared to compact or solid scaffolds currently applied in the operative room. This study proved that compact structures have less resistance than trabecular scaffolds by identifying plastic compression properties. Finally, it was found that trabecular structures in bone implants increased the compression modulus by 49.74%.