| 摘要 |
In order, in a vertebral body replacement implant having an upper and a lower support plate for positioning against end faces of vertebral bodies and having two load-bearing elements, the mutual spacing of which is adjustable and of which at least one is connected in an articulated manner to a support plate, to improve the fixing of the articulated connection, it is proposed that the load-bearing element in the region of the articulated connection to the support plate has a bearing projection with a spherical lateral surface, that the support plate or a bearing part connected thereto rests with a contact surface, which is of a complementary design to the spherical support surface, against the lateral surface over an angular range that extends in peripheral direction at least over 180°, that the support plate or the bearing part is mounted on the bearing projection pivotably about a pivotal axis that extends parallel to the support plate, and that a clamping device that clamps the bearing projection, on the one hand, and the support plate or the bearing part in the contact region of the lateral surface and/or of the contact surface, on the other hand, against one another is provided, by means of which in a clamping position the bearing projection and the support plate or the bearing part are clamped non-pivotably relative to one another and in a release position are released so that they are freely pivotable relative to another about the pivotal axis.
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