Bone remodeling in additive manufactured porous implants changes the stress distribution

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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.
    Original languageEnglish
    Title of host publicationProc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V
    EditorsPaul Fromme, Zhongqing Su
    PublisherSPIE Press
    Volume11381
    DOIs
    Publication statusPublished - 22 Apr 2020
    EventSPIE Smart Structures + Nondestructive Evaluation: Health Monitoring of Structural and Biological Systems XIV - California, United States
    Duration: 27 Apr 20208 May 2020

    Publication series

    Name
    ISSN (Print)0277-786X

    Conference

    ConferenceSPIE Smart Structures + Nondestructive Evaluation
    Country/TerritoryUnited States
    CityCalifornia
    Period27/04/208/05/20

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