Orthopaedic prosthetic system for a hinged-knee prosthesis

An orthopaedic prosthesis, comprising:

• a femoral component configured to be coupled to a surgically-prepared distal end of a patient's femur, the femoral component including (i) a pair of condyles spaced apart to define an intercondylar notch, each condyle including a convex curved condylar surface, and (ii) a posterior cam that is positioned in the intercondylar notch, the posterior cam having a groove formed in an anterior surface thereof,
• a tibial component including a tray configured to be coupled to a surgically-prepared proximal end of a patient's tibia and a platform pivotally coupled to the tray, the platform including a pair of concave curved surfaces corresponding to the convex curved condylar surfaces of the femoral component and a proximal opening positioned between the concave curved surfaces, and
• a modular insert configured to be selectively coupled to the femoral component, the modular insert including (i) a bracket sized to be positioned in the intercondylar notch of the femoral component, the bracket having a flange extending posteriorly therefrom and positioned in the groove formed in the anterior surface of the posterior cam of the femoral component, (ii) an elongated stem sized to be received in the opening defined in the platform of the tibial component, the elongated stem including a posterior surface configured to engage the anterior surface of the posterior cam of the femoral component, and (iii) a hinge pin that pivotally couples the elongated stem to the bracket,
• wherein (i) the platform rotates relative to the tray about a first axis extending in an inferior-superior direction, and (ii) the bracket and the femoral component pivot about a second axis relative to the elongated stem, the second axis extending in a medial-lateral direction orthogonal to the first axis.