Long-life artificial meniscus part, for use in a knee joint, has a depression on the tibia joint surface

摘要

A meniscus part (20) with a tibia joint surface (38) and a femur joint surface (40) respectively movably bearing on an artificial or natural tibia and a femur, the tibia joint surface (38) being formed flush, is such that the tibia joint surface (38) has at least one depression (52) surrounding a depressed surface (54) away from the meniscus part (20).