| 摘要 |
The invention relates to an intervertebral disc prosthesis comprising a lower element (14) consisting of a lower prosthetic plate (16) and an insert (18) defining a surface in the form of a convex spherical dome placeable in said prosthetic plate, wherein the prosthetic plate (16) comprises a reception area (38) provided with a bottom (28) and a peripheral edge (24) interrupted by an insertion opening (36) and the insert (18) comprises a base (48) arrangeable in said reception area (38). The insert (18) and prosthetic plate (16) comprise first fixing means (56, 40) for fixing in a direction OZ perpendicular to the bottom of the reception area. The insert insertion end, said plate and second fixing means comprise a movable fixing member (46) arranged in said insertion opening for interacting with an additional member (62) of the insert for fixing the second end of the insert to the plate in said OZ direction. |
