| 摘要 |
The invention is a knee prosthesis which more accurately reproduces the rollback of natural knee movement and, thus, reduces wear on the tibial component. The knee prosthesis includes a femoral component (10) with two cams (22, 24), the first (22) located between the posterior condylar sections (14), and the second (24) located towards the anterior end of the condylar sections (14) with a slot surface therebetween. The tibial component (30) includes a spine which engages each cam as it rotates along the femoral component and the slot surface (20) during flexion, and extension.
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