Patent ID: 6616696
Filing Date: 2003-09-09
Classification: A61F

Abstract:
A prosthetic knee system comprising:a patellar implant implantable on the rear of the patient's patella, said patella implant having a bearing surface; a trochlear implant implantable on the knee end of a patient's femur, said trochlear implant having an articulation surface which engages the bearing surface of the patellar implant; and a femoral prosthesis implantable in the knee end of a patient's femur in place of the trochlear implant, said femoral prosthesis having a bearing surface which engages the bearing surface of the patellar implant and a prosthetic tibial component, wherein the contour of the bearing surface of the femoral prosthesis is shaped identically to a portion of the articulation surface of the trochlear implant which engages the bearing surface of the patellar implant; wherein the bearing surface of the patellar implant is shaped to provide area contact and congruent engagement with both the articulation surface of the trochlear implant and the bearing surface of the femoral prosthesis.