| 摘要 |
The invention concerns a implant comprising first and second elements (20a, 20b) supporting subjacent and superjacent vertebral plates, means (13a, 13b, 23) retaining said support elements one above the other and at least a mobile member (30a, 30b) for varying the distance between the two support elements. The invention is characterised in that the retaining means comprise at least sliding means (13a, 13b, 23) provided between the two support elements, and the or each mobile member consists of a cam with discrete positions (30a, 30b) driven in rotation about a substantially horizontal axis substantially parallel to the saggital plane. The invention is useful for replacing a body of vertebrae in backbone surgery.
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