| 摘要 |
The inventive intervertebral implant ( 1 ), in particular an artificial intervertebral disc comprises a central axis ( 2 ), a top part ( 3 ) and a lower part ( 4 ), wherein A) the top part ( 3 ) is provided with a top apposition surface ( 5 ) which rests on a base plate of a superimposed vertebral body, B) the lower part ( 4 ) is provided with a lower apposition surface ( 6 ) for resting on the covering plate of an underneath vertebral body, C) one part ( 3, 4 ) comprises a convex joint element ( 12 ) provided with a convex sliding surface ( 11 ) and the other part ( 3, 4 ) comprises a joint shell ( 13 ) provided with a complementary concave surface, D) the convex joint element ( 12 ) and the convex joint shell ( 13 ) form a joint ( 9 ) by means of which the two parts ( 3, 4 ) are rotatable with respect to each other around at least one axis of rotation and E) the intervertebral implant ( 1 ) is permeable to x-rays.
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