Fig. 2

a Lateral view defined as a view that has posterior femoral condyles superimposed precisely. b Posterior condylar tangent line anterior-posterior view defined as perpendicular (90°) to the lateral view of the distal femur. c Patella-in-center anterior-posterior view defined as a coronal view of the knee with the patella centered between the distal femoral condyles. d Fibular coverage anterior-posterior view defined as a coronal view of the knee with 50% overlap of the fibular head with the tibia