Patent ID: 6972039

Claim:
A prosthesis for replacing a knee joint between a femur and a tibia, the prosthesis comprising: a femoral component including a first condylar portion and a second condylar portion; an inter-condylar box, including a first side wall spaced apart from a second side wall, disposed between said first condylar portion and said second condylar portion; a tibial component, adapted to be implanted into the tibia; and a guide post extending superiorly from said tibial component, wherein said guide post includes a sagittal plane dimension or a coronal plane dimension; wherein said guide post is adapted to extend into said inter-condylar box when the prosthesis is implanted in the knee joint; wherein said femoral component is adapted to rotate about said guidepost between a first position and a second position; wherein a varus distraction or a valgus distraction is limited a first amount when said femoral component is in said first position and the varus distraction or the valgus distraction is limited a second amount when said femoral component is in said second position.