| 摘要 |
<p>A knee prosthesis is provided which forces the femur and tibia apart on twisting of the knee so that weight applied through the knee has an untwisting action. A tibial member (20) and an intermediate member (18) are journalled together by peg (36) which fits into socket (44). Opposite handed helical surfaces (A, D and B, C) cam the members (18, 20) apart when the knee is twisted. A knee hinge is defined by intermediate member (18) and a female member (16).</p> |
