Effect of sacral buttress technique in Ramathibodi spinal system fixation on L5-S1 motion.

TL;DRAbstract

This is a retrospective study which reviewed the effects of the sacral buttress technique of Ramathibodi Spinal System (RSS) instrumentation for degenerative conditions of the spine on L5-S1 motion. The inclusion criteria included patients who were treated by wide decompression and fusion of the lumbar spine. Two treatment groups of a different fusion technique were identified; the first group was treated by conventional fixation and the second group was treated by the sacral buttress technique. The objective of this study was to evaluate the effect on L5-S1 motion and translation between the conventional group and sacral buttress group. The material consisted of 66 patients who were operated from 1996 to 1999 for degenerative conditions of the lumbosacral spine. The conventional group included 25 patients in whom instrumentation was stopped at the fifth lumbar spine and the buttress group consisted of 41 patients who underwent the sacral buttress technique with RSS fixation. Dynamic l

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