Fig. 4

Area under the curve (AUC) was 0.919 for the filling ratio of the distal segment to medullary canal on the lateral view (95% confidence interval 0.867 to 0.972) and 0.808 for the reduction quality score (95% confidence interval 0.714 to 0.901). The recommended lateral filling ratio of the distal nail segment to medullary canal for balancing sensitivity and specificity was 53 (%)