Five year survival analysis of an oxidised zirconium total knee arthroplasty
Autor: | Jill A. Pope, Philip Holland, Alasdair J.A. Santini, John S. Davidson |
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Rok vydání: | 2013 |
Předmět: |
musculoskeletal diseases
medicine.medical_specialty Time Factors WOMAC Compressive Strength Databases Factual medicine.medical_treatment Total knee arthroplasty chemistry.chemical_element All polyethylene Prosthesis Design Risk Assessment Materials Testing medicine Humans Orthopedics and Sports Medicine Prospective Studies Range of Motion Articular Arthroplasty Replacement Knee Survival analysis Aged Zirconium business.industry Incidence (epidemiology) Middle Aged Prognosis Arthroplasty Prosthesis Failure Surgery Treatment Outcome chemistry Polyethylene Female Implant Knee Prosthesis business |
Zdroj: | The Knee. 20:384-387 |
ISSN: | 0968-0160 |
DOI: | 10.1016/j.knee.2012.10.007 |
Popis: | Background Zirconium total knee arthroplasties theoretically have a low incidence of failure as they are low friction, hard wearing and hypoallergenic. We report the five year survival of 213 Profix zirconium total knee arthroplasties with a conforming all polyethylene tibial component. Methods Data was collected prospectively and multiple strict end points were used. SF12 and WOMAC scores were recorded pre-operatively, at three months, at twelve months, at 3 years and at 5 years. Results Eight patients died and six were “lost to follow-up”. The remaining 199 knees were followed up for five years. The mean WOMAC score improved from 56 to 35 and the mean SF12 physical component score improved from 28 to 34. The five year survival for failure due to implant related reasons was 99.5% (95% CI 97.4–100). This was due to one tibial component becoming loose aseptically in year zero. Conclusions Our results demonstrate that the Profix zirconium total knee arthroplasty has a low medium term failure rate comparable to the best implants. Further research is needed to establish if the beneficial properties of zirconium improve long term implant survival. |
Databáze: | OpenAIRE |
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