Spine
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A population-based cross-sectional and 5-year prospective questionnaire study. ⋯ Having a sedentary job might have a protective or neutral effect in relation to low back pain, whereas having a heavy physical job constitutes a significant risk factor. Because of migration between exposure groups (the "healthy-worker" effect), longitudinal studies are necessary for investigating the associations between physical workload and low back pain.
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A case report of anaerobic vertebral osteomyelitis after anal dilatation. ⋯ Bacteroides fragilis hematogenous osteomyelitis is a rare entity. This is the first reported case of such disease after anal dilatation.
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Comparative Study
Evaluation of various evoked potential techniques for spinal cord monitoring during scoliosis surgery.
This prospective study compared the outcomes of different evoked potential (EP) techniques for intraoperative spinal cord monitoring. ⋯ CSEP and CMEP are recommended for routine monitoring, so that both ascending and descending tracts are monitored. If adequate signals for either of these proposed monitoring methods cannot be easily obtained, SSEP can substitute for CSEP, whereas SCEP can substitute for CMEP.
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Comparative Study
Disc herniation-related back pain impairs feed-forward control of paraspinal muscles.
A comparative study of lumbar paraspinal muscle reflexes during sudden upper limb loading in healthy control subjects and patients with sciatica. ⋯ The results provide evidence for impaired feed-forward control of lumbar muscles in patients with sciatica.
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Analysis of preoperative, 8-week, 1-year, and 2-year data from patients with right thoracic adolescent idiopathic scoliosis treated by posterior Universal Spine System (Stratec Medical, Oberdorf, Switzerland). ⋯ Almost half of initial back surface correction is lost by 2 years. Segmental vertebral translation measurements most strongly correlate with segmental angle of trunk inclination measurements during follow-up. Rib-hump reassertion is best explained by unwinding of the thoracic cage tensioned by surgery rather than through relative anterior spinal overgrowth. Spine and thoracic cage factors determine rib-hump correction, so surgical disruption of the latter by costoplasty may prevent rib-hump reassertion. Results of scoliosis surgery should include surface data.