The spine journal : official journal of the North American Spine Society
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Multicenter Study Clinical Trial
Evaluation and analysis of patient outcomes with an intrasegmental fixation system in lumbar spinal fusion.
A new spinal fixation system with polydirectional screws and modular links with interconnecting radial serrations has been developed. The system allows the linking of multiple points of fixation, two points at a time (intrasegmental fixation), thus eliminating the need for intraoperative contouring of rods or plates. ⋯ The results of these analyses show consistent patient outcomes regardless of the number of levels fused with an intrasegmental system. This may be attributable to the increased biomechanical strength of the system at each segment, coupled with the ability of intrasegmental fixation to maintain sagittal plane balance through preservation of the patient's lordotic curve.