Fig. 1 (Abstract O21)

After the accurate tibial cut in flexion (A), the knee was brought into extension (B). A With an appropriate gap gauge (spacer block) in place, limb alignment was corrected to the native knee in flexion position The femoral reference central line was drawn on the distal femoral condyle articular surface which is vertical to the tibial cut plane from the midpoint of the tibial cut plane. B With an appropriate spacer block in place, limb alignment was corrected to neutral. The femoral drill reference (line A) was drawn on the anterior femoral surface vertical to the tibial cut plane