Spine
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A literature review was conducted. ⋯ Animal models will continue to play a critical role in the development of experimental therapies for spinal cord injuries. Both sharp and blunt spinal cord injury paradigms have unique characteristics that make them useful in addressing slightly different neurobiologic problems.
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Comparative Study
Outcome of posterior lumbar interbody fusion versus posterolateral fusion for spondylolytic spondylolisthesis.
This retrospective study analyzed the outcome of 44 patients who had decompression, pedicle screw-rod fixation, and fusion for Grades 1 and 2 spondylolytic spondylolisthesis. ⋯ Posterolateral fusion has a better clinical outcome in low grades of isthmic spondylolisthesis, although posterior lumbar interbody fusion is more predictable in maintaining correction and achieving union. Careful patient selection is needed for each operation, and adjacent level disc degeneration may influence the procedure offered to the patient.
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An anatomic study of the iliolumbar ligament was performed in association with lumbosacral disc degeneration. ⋯ If the iliolumbar ligaments (especially the posterior band of the ligament) of a male patient are short and have a large cross-sectional area, the lumbosacral junction can be stabilized by the ligaments, with the L5-S1 disc being protected from degeneration. The L4-L5 disc may be prone to degeneration.
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Neurogenic mixed evoked potentials are used routinely to monitor the spinal cord during spine surgery. This study investigates the differential sensory-motor contribution by using collision techniques. ⋯ Both standard and conditioned neurogenic mixed evoked potentials are proposed to provide combined sensory and motor spinal pathway monitoring.