Bone remodeling in additive manufactured porous implants changes the stress distribution

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

doi:10.1117/12.2558093

Bone remodeling in additive manufactured porous implants changes the stress distribution

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

School of Pharmacy & Biomedical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V
Editors	Paul Fromme, Zhongqing Su
Publisher	SPIE Press
Volume	11381
DOIs	https://doi.org/10.1117/12.2558093
Publication status	Published - 22 Apr 2020
Event	SPIE Smart Structures + Nondestructive Evaluation: Health Monitoring of Structural and Biological Systems XIV - California, United States Duration: 27 Apr 2020 → 8 May 2020

Conference

Conference	SPIE Smart Structures + Nondestructive Evaluation
Country/Territory	United States
City	California
Period	27/04/20 → 8/05/20

Keywords

noissn

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10.1117/12.2558093

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11381/2558093/Bone-remodeling-in-additive-manufactured-porous-implants-changes-the-stress/10.1117/12.2558093.full

Cite this

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title = "Bone remodeling in additive manufactured porous implants changes the stress distribution",

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.",

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author = "Cheong, {Vee San} and Aadil Mumith and Melanie Coathup and Gordon Blunn and Paul Fromme",

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editor = "Paul Fromme and Zhongqing Su",

booktitle = "Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V",

publisher = "SPIE Press",

note = "SPIE Smart Structures + Nondestructive Evaluation : Health Monitoring of Structural and Biological Systems XIV ; Conference date: 27-04-2020 Through 08-05-2020",

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Cheong, VS, Mumith, A, Coathup, M, Blunn, G & Fromme, P 2020, Bone remodeling in additive manufactured porous implants changes the stress distribution. in P Fromme & Z Su (eds), Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V. vol. 11381, SPIE Press, SPIE Smart Structures + Nondestructive Evaluation, California, California, United States, 27/04/20. https://doi.org/10.1117/12.2558093

Bone remodeling in additive manufactured porous implants changes the stress distribution. / Cheong, Vee San; Mumith, Aadil; Coathup, Melanie et al.

Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V. ed. / Paul Fromme; Zhongqing Su. Vol. 11381 SPIE Press, 2020.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Bone remodeling in additive manufactured porous implants changes the stress distribution

AU - Cheong, Vee San

AU - Mumith, Aadil

AU - Coathup, Melanie

AU - Blunn, Gordon

AU - Fromme, Paul

PY - 2020/4/22

Y1 - 2020/4/22

N2 - 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.

AB - 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.

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DO - 10.1117/12.2558093

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VL - 11381

BT - Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V

A2 - Fromme, Paul

A2 - Su, Zhongqing

PB - SPIE Press

T2 - SPIE Smart Structures + Nondestructive Evaluation

Y2 - 27 April 2020 through 8 May 2020

ER -

Bone remodeling in additive manufactured porous implants changes the stress distribution

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