Fig. 1

CAD model of the tibial plateau fracture: the distal end of the fragment was cut completely to separate the fragment from the tibial plateau medial view (A) and posteromedial view (B), the inner and outer structures of bone exposed (C), the model, plate and screw fixed (D), plate and nail cap tied simulating locking system and (E), Two sides of tibial plateau fully presented; medial side (F) and lateral side (G), forces loaded uniformly on the tibial plateau on the full plateau (H) and on the posterior compartment (I), the boundary condition of lower end of the fracture line (J). Note a = anterior, p = posterior, m = medial, l = lateral