257 ankle arthroplasties performed in Norway between 1994 and 2005.

Department of Rheumatology, Haukeland University Hospital, Bergen, Norway.
Acta Orthopaedica (Impact Factor: 2.45). 11/2007; 78(5):575-83. DOI: 10.1080/17453670710014257
Source: PubMed

ABSTRACT There have been few reports on the long-term outcome of ankle replacements. The Norwegian Arthroplasty Register has been registering ankle replacements since 1994, but no analysis of these data has been published to date. Here we report data on the use of total ankle replacements and the revision rate in the Norwegian population over a 12-year period.
We used the Norwegian Arthroplasty Register to find ankle arthroplasties performed between 1994 and 2005. Patient demographics, diagnoses, brands of prosthesis, revisions, and time trends were investigated.
There were 257 primary ankle replacements, 32 of which were cemented TPR prostheses and 212 of which were cementless STAR prostheses. The overall 5- year and 10-year survival was 89% and 76%, respectively. Prosthesis survival was the same for the cementless STAR prosthesis and the cemented TPR prosthesis. There was no significant influence of age, sex, type of prosthesis, diagnosis, or year of operation on the risk of revision. The incidence of ankle replacements due to osteoarthritis, but not due to inflammatory arthritis, increased over the years.
The revision rate was acceptable compared to other studies of ankle arthroplasties, but high compared to total knee and hip arthroplasties. The overall incidence of ankle replacements increased during the study period.

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    ABSTRACT: Dear Editor,We read with interest the paper by Sadoghi and colleagues in the August issue of the journal [1]. Since the article uses data from the Norwegian Arthroplasty Register as a source for their analyses, we would like to comment some flaws in the article.To our surprise, the article at first glance gives an impression of having raw data available from the Norwegian Arthroplasty Register. However, in the statistical paragraph of the article it is stated that the data were obtained from the 2008 annual report (available from the register’s internet pages). This should have been clarified earlier and preferably in the abstract and title of the article. We do not disagree in the use of the data but are additionally surprised that not later data (e.g. the 2013 report) were applied.The article focuses on the causes for revision reported by the Norwegian registry. The statistical analysis is hence on the average annual number of revisions for the reported reasons for revision. The auth ...
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