Fig. 2 (Abstract O21)

The kinematic alignment technique principle in OUKA. A Cartilage wear of the medial compartment causes the knee varus deformity; B Insert space block to fill fully the medial compartment and restore the tension of the medial collateral ligament, which keeps the knee to its native state before the disease. The femur is positioned with the reference of the tibia cut and the overall alignment. The femoral prosthesis is implanted with the direction of the mechanical axis in extension and central with the tibial implant. Therefore, the femur and tibia implants are compatible, allowing for natural movement recovery of the knee joint. The dashed line represents the overall lower limb mechanical alignment