Fig. 2

Left (Image a–c) full-length standing anterior–posterior radiograph of the right leg; a – d center of the hip (circle); a Mechanical axis of the limb and Mechanical Axis Deviation (MAD) (red lines); b Mechanical Femorotibial Angle (MFA) between mechanical femur line (blue line) and mechanical tibia line (red line); c length of the femur and tibia (red brackets); d mLPFA mechanical Lateral Proximal Femur Angle; e mLDTA mechanical Lateral Distal Tibia Angle; f detailed magnification from image a, Mechanical axis of the limb and MAD; g mLDFA mechanical Lateral Distal Femur Angle; h mMPTA mechanical Medial Proximal Tibia Angle; i JLCA Joint Line Convergence Angle [18]