| 摘要 |
The invention relates to a cervical intervertebral prosthesis comprising a lower anchoring plate and an upper anchoring plate (11, 12) with a prosthesi s core (10) arranged thereinbetween for the creation of an articulated connection. The anchoring plates (11, 12) are embodied, with the anchoring plate surface thereof, in such a way as to rest on adjacent vertebral bodies . According to the invention, at least one anchoring plate surface (11, 12) comprises a rib-type projection (18) which can be used to engage with the vertebral body in a positively-locking manner. The invention also relates to an instrument comprising a handle, a shaft and a head part containing a evacuating element which can be sunk thereinto, for the production of a corresponding recess in the vertebral body. The protection of the cervical intervertebral disk prosthesis against an accidental movement can thus be essentially improved. The medullary canal running along the rear edge of the vertebral column is thus protected from damage.
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