Reduced friction prosthetic knee joint utilizing replaceable roller bearings

A reduced friction knee joint prosthesis comprising:

• a femoral component having a pair of laterally spaced condyle carriers connected by an intercondylar connector, said condyle carriers being adapted to house resected femoral condyles of the user,
• said condyle carriers being terminated in an anterior curved upwardly extending plate section having a concave recess therein adapted to receive the patella of the user,
• a tibial component adapted to be mounted on a surgically prepared proximal tibia of the user having a bearing mounting member,
• bearing mounting means having bearing race means containing a plurality of movable bearings mounted in said bearing mounting member,
• said condyle carriers of said femoral component being positioned on said movable bearings for pivotal movement of said femoral component on said movable bearings mounted in said tibial component,
• a patella component comprising a patella button, a radial thrust bearing means and a patella body for housing and positioning said patella button on said radial thrust bearing means, said patella body adapted to have the patella of the user mounted thereon,
• said patella button of patella component positioned in said concave recess on said femoral component for interaction therewith to simulate the movement of the natural patella.