| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile knee prosthesis of an improved rotating platform, that incorporates anterior stabilization along with the ability to constrain the movement of the articular surface from rotation and translation, to rotation only.SOLUTION: A mobile bearing knee prosthesis 10 enables a surgeon to convert a mobile bearing insert 28 having articular surfaces from a rotating and translating prosthesis 10 to one that rotates only. This conversion is accomplished with a fastener or locking member 24 that connects through an opening in the insert to the tibial baseplate 13. A projecting portion extends proximally from the insert and cooperates with a cam on the femoral component. The femoral component includes an intercondylar surface that may be brought into contact with the post 18 to constrain the relative motion between the femoral component and the insert. |
