Editor's choiceJoint Survival Analysis and Clinical Outcome of Total Joint Arthroplasties With the ARPE Implant in the Treatment of Trapeziometacarpal Osteoarthritis With a Minimal Follow-Up of 5 Years
Section snippets
Methods
A prospective, consecutive case series study was done at our hand unit. Patients included in the study had at least 5 years’ follow-up after a total joint arthroplasty for arthritis of the TMC joint using the ARPE implant.
Survival analysis
We included 166 prostheses (in 156 patients, 10 bilateral) in the survival analysis with a mean follow-up of 80 months (median, 75 months). We made 2 survival curves; in the first curve, survival means that the prostheses was not removed. Five prostheses (3%) required revision surgery and 1 implant (0.6%) was removed. Therefore, Kaplan-Meier survival probability was 96% with a mean follow-up of 80 months (95% confidence interval [95% CI], 91–98) (Fig. 3). In the second curve, indication for
Discussion
The survivorship rate of these prostheses at 80 months’ follow-up was 96%, where survival means that the prostheses has not been removed (95% CI, 91–98). These results are close to the survival rates for the ARPE prosthesis reported by Vander Eecken et al5 and by Martin-Ferrero.6 In the first study, survival was 97% at 5 years; in the second, 93.9% at 10 years. However, in the second article, revision of the prosthesis was not chosen as an end point, so survival rates are not necessarily
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