Fig. 2

Component position angle on radiograpy. CFA was determined as the medial angle between the line connecting the femoral component condyles and the mechanical axis of the femur. CTA was defined as the medial angle between the horizontal tibial tray and the mechanical axis of the tibia. SFA was the proximal angle between the line perpendicular to the distal cement surface and the anatomical axis of the femur. STA was defined as the angle between the axis of the horizontal tibial tray and the anatomical axis of the tibia

^*CFA, coronal femoral alignment; CTA, coronal tibial alignment; SFA, sagittal femoral alignment; STA, sagittal tibial alignment