| 摘要 |
A method and apparatus for stabilizing the lumbo-sacral junction using an upper bone anchor interfaced with the L5 vertebra and a lower bone anchor interfaced with the S1 sacral bone. An intermedullary rod connects the upper and lower bone anchors. Preferably, the intermedullary rod is angled at an angle relative to a longitudinal axis of the spinal column that replicates a desired angle between the L5 vertebra and the S1 sacral bone. In one embodiment, a distal end of the lower bone anchor is secured into the S1 sacral bone such that a proximal end of the lower bone anchor does not protrude above an anterior surface of the S1 sacral bone. In another embodiment, the lower bone anchor has at least one variable angle socket adapted to receive a fastener to secure into the S1 sacral bone.
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