Fig. 1From: Sagittal femoral bowing contributes to distal femoral valgus angle deviation in malrotated preoperative radiographsA The surgical epicondylar axis (SEA). B, C Coronal and sagittal DRR images. White solid line, white dashed line and black solid line indicate the mechanical axes of femur, the SEA and the distal femoral anatomical axis, respectively. D 10° flexed position in the sagittal planeBack to article page