Tuning the tribofilm nanostructures of polymer-on-metal joint replacements for simultaneously enhancing anti-wear performance and corrosion resistance

[Display omitted] Total joint replacement is currently the most successful clinical treatment for improving the life quality of individuals afflicted with end-stage osteoarthritis of knee or hip joints. However, release of wear and corrosion products from the prostheses is a critical issue causing a...

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Bibliographic Details
Published in:Acta biomaterialia 2019-03, Vol.87, p.285-295
Main Authors: Liu, Gen, Zhang, Ligang, Li, Guitao, Zhao, Fuyan, Che, Qinglun, Wang, Chao, Zhang, Ga
Format: Article
Language:English
Subjects:
Arthroplasty, Replacement, Hip
Biocompatibility
Biomedical materials
Body fluids
Corrosion
Corrosion prevention
Corrosion products
Corrosion resistance
Corrosion resistant steels
Corrosive wear
Hip
Hip Prosthesis
Humans
In vitro methods and tests
Joint prosthesis
Joints (anatomy)
Ketones - chemistry
Knee
Life span
Metal joints
Metals
Metals - chemistry
Nanoparticles
Nanoparticles - chemistry
Nanostructure
Osteoarthritis
PEEK nanocomposite
Physiological responses
Polyether ether ketones
Polyethylene Glycols - chemistry
Prostheses
Prosthetics
Quality of life
Shielding
Silicon carbide
Steel
Surgical implants
Tribocorrosion
Tribofilm
Tuning
Wear resistance
β-SiC nanoparticle
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Summary:[Display omitted] Total joint replacement is currently the most successful clinical treatment for improving the life quality of individuals afflicted with end-stage osteoarthritis of knee or hip joints. However, release of wear and corrosion products from the prostheses is a critical issue causing adverse physiological responses of local issues. β-SiC nanoparticles were dispersed into polyetheretherketone (PEEK) materials and their role in tribocorrosion performance of PEEK-steel joints exposed to simulated body fluid was investigated. It is demonstrated that β-SiC nanoparticles increase greatly the wear resistance of the PEEK materials, and meanwhile mitigate significantly corrosion of the steel counterpart. It is revealed that tribochemical reactions of β-SiC nanoparticles promoted formation of a robust tribofilm having complex structures providing protection and shielding effects. The present work proposes a strategy for developing high-performance polymer-on-metal joint replacement materials of enhanced lifespan and biocompatibility via tuning interface nanostructures. Adverse tissue responses to metal wear and corrosion products from metal base implants remain a challenge to surgeons and patients. We demonstrated that leaching of metal ions and release of metallic debris are well decreased via tuning interface nanostructures of metal-polymer joint bearings by dispersing β-SiC nanoparticles into polyetheretherketone (PEEK). It is identified that the addition of β-SiC greatly improves the tribological performances of the PEEK materials and mitigated corrosion of the steel. Tribo-chemistry reactions of SiC induce the formation of complex structures which provide protection and shielding effects. Nanostructures of the tribofilm were also comprehensively investigated. These novel findings proposed a potential route for designing high performance metal-polymer joint replacement materials.
ISSN:1742-7061
1878-7568
DOI:10.1016/j.actbio.2019.01.038