Posteriorly stabilized total knee joint prosthesis

Details Posteriorly stabilized total knee joint prosthesis Posteriorly stabilized total knee joint prosthesis

B - Operations, Transporting

23

G

3/106

B23G 9/00 (2006.01) A61F 2/38 (2006.01)

Patent

CA 1155603

ABSTRACT OF THE DISCLOSURE A box-like recess between the condylar portions of the femoral component has a transverse convexly curved cam follower portion at the posterior extremity of a superior wall which engages a concave cam surface at the inferior portion of the posterior surface of a tibial post that extends up from the plateau surface of the tibial component into the recess. The camming action between the cam follower and cam surface forces the zones of contact between the condylar portions of the femoral component and concavities in the tibial component posteriorly as the leg approaches full flexion, thereby increasing the range of flexion without interference between posterior surfaces of the femur and the tibial component and preventing anterior dislocation of the femur. The plateau of the tibial component slopes inferiorly and posteriorly, also to increase the range of flexion without interference.

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