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Accepted (AM)Open Access (License Unspecified), Open
Journal article
In Vivo Oxidation Contributes to Delamination but not Pitting in Polyethylene Components for Total Knee Arthroplasty
The Journal of arthroplasty, v 26(5), pp 802-810
2011
PMID: 20875942
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Abstract
The aim of this study was to better understand how in vivo oxidation contributes to fatigue damage in total knee arthroplasty (TKA). A total of 119 tibial inserts were consecutively collected after revision surgery. Of the 119 polyethylene retrievals, 29 were gamma sterilized in air (historical), whereas the remaining 90 were gamma sterilized in nitrogen (conventional). Surface damage assessment and characterization of oxidation were performed on all the retrievals. Delamination was significantly more prevalent and extensive in the longer-term, highly oxidized, historical tibial inserts. Pitting damage, in contrast, seemed to be equally prevalent between both retrieval groups and was not correlated with in vivo oxidation. Our findings support our hypothesis that in vivo oxidation is a contributing factor to delamination, but not pitting, in TKA. Despite the lower oxidation displayed by conventional retrievals, this study provides strong evidence that delamination secondary to in vivo oxidation may occur during the second decade of implantation.
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Details
- Title
- In Vivo Oxidation Contributes to Delamination but not Pitting in Polyethylene Components for Total Knee Arthroplasty
- Creators
- Francisco J. Medel - Drexel UniversitySteven M. Kurtz - Exponent (United States)Javad Parvizi - Rothman InstituteGregg R. Klein - Hackensack University Medical CenterMatthew J. Kraay - University Hospitals of ClevelandClare M. Rimnac - Case Western Reserve University
- Publication Details
- The Journal of arthroplasty, v 26(5), pp 802-810
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000293481500023
- Scopus ID
- 2-s2.0-79960556981
- Other Identifier
- 991019167686404721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Orthopedics