Accuracy of Patient Specific Cutting Blocks in Total Knee Arthroplasty
Figure 1
Schematic drawing of the alignment parameters. HKA was defined by the angle between the femoral head centre, the middle of the knee joint, and the middle of the ankle joint (a). DFA was defined by the angle between the femoral head centre, the middle of the knee joint, and a tangential line at the femoral condyles/femoral component in the coronal plane (b). PTA was defined as the angle between the middle of the ankle joint line and a tangential line at the tibial plateau/tibial component in the coronal plane (c).
