Fig. 3
From: The 10-year outcomes of the ASR XL Acetabular System: a single-center experience from China
ROC curves and the Kaplan–Meier curves for the ASR XL MoM prostheses after implantation. a–c ROC curve analysis was applied to categorize the optimal cutoff values of acetabular abduction angle and serum Cr and Co concentration for revision surgery. Black arrow indicates optimal cutoff values. d–f Kaplan–Meier curves for the ASR XL MoM prostheses with different acetabular abduction angle and serum Cr and Co concentration. High acetabular abduction angle (> 47.80°), high serum Cr concentration(> 98.44 μg/L), and high serum Co concentration(> 6.95 μg/L)