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Kaplan-Meier analysis with hydroxyapatite (HA) coating as the independent factor and stem revision for any reason as the endpoint. 10-year survival was 98.2% (CI: 97.6–98.8) for the HA-coated stems (red) and 97.7% (CI: 96.5–98.9) for the uncoated stems (black). The dashed lines represent 95% CIs for the 2 groups of stems (p = 1.0).
