S3b – Positions of femur landmarks. Landmarks were placed in 4 positions to aid alignment. Landmarks were placed in the following locations 1.) Proximal femur end inflection point, 2.) Distal femur end inflection point, 3.) Articulation point between femur and tibia, 4.) Articulation between femur and trochanter. Specimen photographs were consulted to aid landmark placement where necessary.