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Rotational and translational knee kinematics in models A–G: (A) knee flexion angle, (B) femoral internal/external rotation, (C) knee varus/valgus angle, (D) femoral anterior/posterior translation, (E) superior/inferior translation (the initial value of superior–inferior translation indicates superior–inferior height difference between the tibial and femoral coordinate systems), and (F) femoral medial/lateral translation.
