A1 Refereed original research article in a scientific journal
Long-term Results of Scandinavian Total Ankle Replacement
Authors: Helka Koivu, Ia Kohonen, Kimmo Mattila, Eliisa Löyttyniemi, Hannu Tiusanen
Publisher: SAGE PUBLICATIONS INC
Publication year: 2017
Journal: Foot and Ankle International
Journal name in source: FOOT & ANKLE INTERNATIONAL
Journal acronym: FOOT ANKLE INT
Volume: 38
Issue: 7
First page : 723
Last page: 731
Number of pages: 9
ISSN: 1071-1007
DOI: https://doi.org/10.1177/1071100717698695
Abstract
Background: The purpose of this study was to evaluate the long-term results of the Scandinavian Total Ankle Replacement (STAR) implant in a single center.Methods: Between 1997 and 2002, 34 consecutive ankles were replaced with the STAR ankle prosthesis and reviewed in 2016. Patients were followed both radiologically and clinically; clinical outcomes were measured with the Kofoed ankle score and subjective measurements. The median follow-up period was 159 months (13.3 years; range, 13-202 months).Results: The implant survival rate was 93.9% (95% confidence interval [CI], 92.2%-86.7%) at 5 years, 86.7% (95% CI, 69.3%-96.2%) at 10 years, and 63.6% (95% CI, 30.8%-89.0%) at 15 years. A total of 15 ankles (44%) had been revised: 2 by fusion, 3 by further replacement, 5 by insert exchange, and 5 by bone grafting for marked osteolysis. The improvements in the Kofoed ankle score and Kofoed ankle score for pain were statistically significant at every postoperative evaluation point compared to the preoperative values (all P < .0001), and subjective patient satisfaction was high.Conclusion: Our results were satisfactory and in agreement with previously reported findings of STAR implants.Level of Evidence: Level IV, retrospective case series.
Background: The purpose of this study was to evaluate the long-term results of the Scandinavian Total Ankle Replacement (STAR) implant in a single center.Methods: Between 1997 and 2002, 34 consecutive ankles were replaced with the STAR ankle prosthesis and reviewed in 2016. Patients were followed both radiologically and clinically; clinical outcomes were measured with the Kofoed ankle score and subjective measurements. The median follow-up period was 159 months (13.3 years; range, 13-202 months).Results: The implant survival rate was 93.9% (95% confidence interval [CI], 92.2%-86.7%) at 5 years, 86.7% (95% CI, 69.3%-96.2%) at 10 years, and 63.6% (95% CI, 30.8%-89.0%) at 15 years. A total of 15 ankles (44%) had been revised: 2 by fusion, 3 by further replacement, 5 by insert exchange, and 5 by bone grafting for marked osteolysis. The improvements in the Kofoed ankle score and Kofoed ankle score for pain were statistically significant at every postoperative evaluation point compared to the preoperative values (all P < .0001), and subjective patient satisfaction was high.Conclusion: Our results were satisfactory and in agreement with previously reported findings of STAR implants.Level of Evidence: Level IV, retrospective case series.
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