Importance

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Abstract

Device for the osteosynthesis of a spinal segment by the anterior route, which comprises at least two bone anchorage elements for anchorage in the vertebral bodies by the anterior route, a frame comprising a rod adapted to be received in the bone anchorage elements, a plate disposed roughly parallel to the rod and rigidly connected to the latter to form a closed frame. Means are provided for clamping the rod in the anchorage elements so as to fix the latter at a predetermined distance apart, and screws extend through openings in the plate which are so profiled that the screwing of the screws in the vertebrae automatically brings the two adjacent vertebrae closer together and thus achieves a compression of an intervertebral filler replacing a vertebral disk. The association of a plate and a rod 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 relative to the other.

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First Claim