Knee arthroplasty prosthesis and method
A knee arthroplasty prosthesis includes a femoral component having multiple pieces with engagement means provided for engaging various pieces of the femoral component to one another following their insertion in the incised area of the femur. A tibial component includes multiple pieces designed for assembly following positioning in the incision. The tibial component includes a Morse taper cavity on one piece of the tibial component and a Morse taper extension on another member of the component for receipt therein.
1 - 51 . (canceled)
52 . A method of performing knee arthroplasty comprising the steps of
(a) providing a multi-piece femoral component, said femoral component including (i) a first piece extending from an anterior end to an engagement surface and having a patellar femoral flange portion including an articulating surface and an opposed superior bone engaging surface, (ii) a second piece defining at least one condylar portion extending from a posterior end to an abutment surface and having an inferior surface and an opposed superior bone engaging surface, and (iii) means for securing said first piece and said second piece together;
(b) preparing the distal end of a femur to receive said first piece and said second piece;
(c) positioning one of said first piece or said second piece on said prepared femur distal end;
(d) thereafter positioning the other of said first piece or said second piece on said prepared femur distal end with said engagement surface and said abutment surface in contact with one another and cooperating to define a joint; and
(e) securing said first piece and said second piece together.
53 . The method of claim 52 wherein step (e) is performed simultaneously with step (d).
54 . The method of claim 52 wherein step (e) is performed following step (d).
55 - 62 . (canceled)