Spine
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Randomized Controlled Trial Comparative Study
Effectiveness of microdiscectomy for lumbar disc herniation: a randomized controlled trial with 2 years of follow-up.
Prospective randomized controlled trial. ⋯ Lumbar microdiscectomy offered only modest short-term benefits in patients with sciatica due to disc extrusion or sequester. Spinal level of the herniation may be an important factor modifying effectiveness of surgery, but this hypothesis needs verification.
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Randomized Controlled Trial Comparative Study
Optimal end-tidal concentration of sevoflurane to test an ankle clonus in children.
A prospective randomized study on the end-tidal concentrations of sevoflurane at which ankle clonus existed. ⋯ The ankle clonus should be tested at 0.45% volume of end-tidal sevoflurane concentration in children undergoing scoliosis surgery during emergence from the general anesthesia.
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A prospective cohort study with 1-year follow-up. ⋯ The incidence, especially for NSP, is much lower than from developed countries. To study prevalence, incidence and recurrence of LBP and NSP simultaneously leads to a better understanding of the natural pattern and distribution of LBP and NSP in a working population.
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A cross-sectional study to evaluate the long-term result of posterolateral (PLF), anterior (AF), and circumferential fusion (CF) for isthmic spondylolisthesis. ⋯ The clinical outcome was best in the CF group as measured by ODI. Degenerative changes were most commonly found at the level of the slip and above the fusion level. The prevalence of disc prolapses was low. Spinal fusion for isthmic spondylolysis is not associated with central canal stenosis above the fusion. Radiologic nerve root stenosis was common but asymptomatic. Mild muscle atrophy was common.
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Comparative Study
Sagittal alignment of the spine and pelvis in the presence of L5-s1 isthmic lysis and low-grade spondylolisthesis.
A radiographic study of 82 patients with L5-S1 spondylolysis or spondylolisthesis of less than 50% displacement of L5 on S1. ⋯ These data suggest that differences in the sagittal alignment of the spine and pelvis may influence the biomechanical environment that results in the development of spondylolysis and progressive spondylolisthesis.