Journal article
Post damage in contemporary posterior-stabilized tibial inserts: influence of implant design and clinical relevance
The Journal of arthroplasty, v 26(4), pp 606-614
01 Jun 2011
PMID: 21575793
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The mechanisms of damage at the polyethylene post in 3 contemporary tibial insert designs were evaluated and compared with a historical standard (Insall-Burstein II; Zimmer, Warsaw, Ind). One hundred five gamma sterilized posterior-stabilized tibial inserts were revised after an average of 4.7 years (0.05-13.6 years). Retrievals were classified according to their designs: Insall-Burstein II (n = 28); PFC (Johnson & Johnson, Raynham, Mass; n = 30); NexGen (Zimmer; n = 32); and Scorpio (Stryker Orthopaedics, Mahwah, NJ; n = 15). Reasons for revision and patient details were available. Surface damage scoring and photogrammetry were performed on all the retrieved tibial inserts. Oxidation analysis was carried out for traceable historical, gamma air-sterilized and conventional, gamma inert-sterilized tibial inserts (n = 61) with the use of infrared spectroscopy. The posts for all 3 contemporary designs exhibited damage similar to the historical controls. Articular, post, and backside damage scores significantly increased with implantation time. Post damage was insensitive to design and patient factors but was exacerbated by oxidation. An association between damage at the post and articular surface was also confirmed. Logistic models suggested an interaction between post damage, backside surface damage, and implant loosening.
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Details
- Title
- Post damage in contemporary posterior-stabilized tibial inserts: influence of implant design and clinical relevance
- Creators
- Francisco J Medel - Drexel UniversitySteven M KurtzPeter F SharkeyMatthew S AustinGregg R KleinAlexis R CohenHina PatelVictor M GoldbergMatthew J KraayImplant Res Ctr Writing CommClare M Rimnac
- Publication Details
- The Journal of arthroplasty, v 26(4), pp 606-614
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000291239900015
- Scopus ID
- 2-s2.0-79955956056
- Other Identifier
- 991019167556704721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Orthopedics