| 摘要 |
The invention relates to a vertebral disc or intervertebral disc prosthesis comprising: A) an upper apposition plate (1) that is suited for placing against the base plate of a vertebral body; B) a lower apposition plate (2), which is located at a distance from the upper apposition plate and which is suited for placing against the cover plate of a vertebral body; C) a number of elastic means (3) that are placed between both apposition plates (1, 2) in the peripheral areas (4) thereof so that both apposition plates (1, 2) can elastically move relative to one another, and; D) a central axis (5) that is essentially perpendicular to both apposition plates (1, 2). Said elastic means (3) are formed or arranged in such a manner that the vertebral disc has, by and large, an asymmetric rigidity.
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