?tlsb=-0.15pt?>From sitting to standing up position, the femoral component internally rotated (from −11.3 ± 0.2° to −7.0 ± 0.2°). Varus–valgus rotations were very close to 0° during the whole motor task.
LP of medial condyle moved from an anterior position of 12.0 ± 0.2 mm to a posterior position of −12.4 ± 0.2 mm; LP of the lateral condyle moved from an anterior position of 8.1 ± 0.2 mm to a posterior position of −12.4 ± 0.2 mm, showing a bi-condylar rollback where both condyles moved parallel backward. Moreover, the femoral component showed anterior translation with respect to the tibia from 80° to 20° (from −4.9 ± 0.2 mm to 3.3 ± 0.2 mm), then a posterior translation from 20° to full extension was identified (from 3.3 ± 0.2 mm to 0.5 ± 0.2 mm).