Fig. 3From: Anterior knee pain and sit-up tests predicts patients’ satisfaction and improvement in quality of life after anterior stabilized total knee replacement without patellar resurfacingThe ROC curve was estimated to determine the model's discrimination for Section A of the Goodman scale. The independent variables were anterior knee pain and the number of sit-ups performed in 30 s at the final follow-up. Abbreviations: ROC, receiver operating characteristicsBack to article page