| 摘要 |
<p>Device for the osteosynthesis of a spinal segment by the anterior route, characterized in that it comprises at least two bone anchorage elements (1) for anchorage in the vertebral bodies (L2, L3...) by the anterior route, a frame (5) comprising a rod (6) adapted to be received in the bone anchorage elements, a plate (7) disposed roughly parallel to the rod and rigidly connected to the latter to form a closed frame. Means (4, 3) are provided for clamping the rod in the anchorage elements so as to fix the latter at a predetermined distance apart, and screws (16) extend through openings (9) in the plate which are so profiled that the screwing of the screws (16) in the vertebrae automatically brings the two adjacent vertebrae closer together and thus achieves a compression of an intervertebral filler (G) replacing a vertebral disk. The association of a plate (7) and a rod (6) in the form of a frame affords the advantage of providing four vertebral anchorage points instead of only two in devices of the prior art, which prevents any offsetting of one vertebra (L2 or L3) relative to the other.</p> |
