Fig. 4From: Sagittal femoral bowing contributes to distal femoral valgus angle deviation in malrotated preoperative radiographsThe receiver operating characteristic curve for large variation in the distal femoral valgus angle with sagittal femoral shaft bowing angle. The cut-off value of the sagittal bowing angle was 12.2° (sensitivity 74%, specificity 88%, area under the curve 0.86)Back to article page