Fig. 2

The ROC curve of the combined predictor of KSS improvement. The new combined predictor combined the time since operation (TSO) with the angle E, and the area under the ROC curve was 0.717
The ROC curve of the combined predictor of KSS improvement. The new combined predictor combined the time since operation (TSO) with the angle E, and the area under the ROC curve was 0.717