Fig. 6

ROC curve and best threshold with corresponding value for sensitivity and specificity for each outcome with significant AUC of > .75 in the hip resurfacing group. a Joint fluid Co and Cr level predicting ALVAL-score of 7 or higher. b Joint fluid Co level predicting presence of lymphocyte cuffs. c Joint fluid Co predicting particle load graded 1–4. d Joint fluid Cr predicting grade III-IV surface necrosis