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Kaplan-Meier survivorship analysis using aseptic revision of the femoral component secondary to failure of ingrowth as the endpoint reveals survival proportion of 99.4% at 5 years (1508 at risk, standard error 0.002), 99.3% at 10 years (795 at risk, standard error 0.002), 99.3% at 15 years (305 at risk, standard error 0.002), and 99.3% at 20 years (121 at risk, standard error 0.002).
