| 摘要 |
Cervical intervertebral prosthesis with two cover plates which are to be connected in each case to one of the adjacent vertebral bodies. At least one of the two cover plates (1, 3) has a toothing (9) which faces toward the vertebral body (7) and whose teeth have a steep, ventrally directed flank (10) and a less steep, dorsally directed flank (11). When the prosthesis is fitted with sufficient pressing between its adjacent vertebral bodies, the combination of the serrated toothing and the abutment surface is sufficient to hold the prosthesis securely in the desired position. In many cases this makes it possible to dispense with additional screw fixation. The flange (15) carrying the abutment surface (16) is in this case expediently shortened so that it can be accommodated in a recess of the bone (7) and the prosthesis does not protrude ventrally beyond the ventral alignment surface of the adjacent vertebral bodies (7).
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