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A New Zealand national joint registry review of 202 total ankle replacements followed for up to 6 years.
- Source :
- Acta Orthopaedica; Oct2007, Vol. 78 Issue 5, p584-591, 8p, 4 Charts, 3 Graphs
- Publication Year :
- 2007
-
Abstract
- Background and purpose There have been few reports of large series of ankle replacements. The aim of this study was to document and evaluate the early results of a nationwide series of total ankle replacements (TARs) performed using second- and third-generation implants. Methods Records of total ankle replacements performed between February 2000 and November 2005 were retrieved from the New Zealand National Joint Registry and retrospectively reviewed at a mean of 28 months after the primary procedure. At 6 months post surgery, patient scores were generated from questionnaires. Comparisons between patient scores and categorical variables were made using ANOVA. Regression analyses using Cox proportional-hazards modeling were performed to determine predictors of failure. A Kaplan-Meier survivorship curve was used to describe the rate of prosthetic survival. Results 202 total ankle replacements were performed in 183 patients. 14 prostheses (7%) failed. The overall cumulative 5-year failure-free rate was 86%. An unfavorable patient score at 6 months after the initial procedure turned out to be a good predictor of subsequent failure. The cumulative 5-year failure-free rate was 65% at 5 years for patients with an unfavorable score, and 95% for those who had a favorable patient score. Each 1-point increase in the patient score (i.e. poorer outcome) corresponded to a 5% relative increase in the risk of failure (p < 0.05). In addition, longer operative time for the primary procedure was found in the group of TARs that subsequently failed (p < 0.05). Interpretation The National Joint Registry appears to be a useful tool for monitoring the trends in TAR surgery. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17453674
- Volume :
- 78
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Acta Orthopaedica
- Publication Type :
- Academic Journal
- Accession number :
- 27240528
- Full Text :
- https://doi.org/10.1080/17453670710014266