Work

Bone remodeling in additive manufactured porous implants changes the stress distribution

Year: 2020

Type: conference-paper

Abstract: Safety and efficacy of additive manufactured porous implants is a growing concern due to several, recent recalls. The safety of bone implants depends on the effects of implantation and partial bone ingrowth on stress and strain. Finite element analysis, using two new algorithms to simulate bone ingrowth, was verified against histology results for an ovine condylar critical sized defect model. Implants were manufactured from Ti6Al4V using selective laser sintering. Results showed that partial bone formation reduces stress concentrations to safe levels, improving the long-term fatigue resistance. Higher bone ingrowth was predicted for implants made from lower modulus Titanium-tantalum alloy.

Source: SPIE Health Monitoring of Structural and Biological Systems

DOI: 10.1117/12.2558093

Authors: Vee San Cheong, Aadil Mumith, Melanie Coathup, Gordon Blunn, Paul Fromme

Institutions: University College London, University of Central Florida, University of Portsmouth

Language: English

Topic: Bone Tissue Engineering Materials

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: green

OpenAlex ID: W3020146378