Identification of Parsons' knob
After the reconstruction of the knee bone model, the femur and patella were selected for removal, and the tibial articular surface was viewed from straight above to obtain a true proximal-to-distal view of the tibial plateau. Next, the tibia was horizontally and uniaxially rotated to obtain a true frontal view of the tibia. The medial intercondylar ridge, medial tibial spine, and Parsons' knob were identified on these views