Spine
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Clinical Trial Controlled Clinical Trial
Proximal neuromuscular impairment in lumbar disc herniation: a prospective controlled study.
A prospective and controlled study investigated the relation of muscle dysfunction to residual pain and disability in patients with lumbar disc herniation. ⋯ Neuromuscular dysfunction frequently is present in patients with lumbar disc herniation. Sciatica resolves quickly after surgery, whereas disability improves gradually up to 4 months and muscular performance improves throughout the first year. Proximal muscular dysfunction in lumbar disc herniation has a prognostic value concerning residual pain and disability.
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Pavlov's ratio from plain radiographs in patients with neck pain but no radicular symptoms was compared with the areas of the cervical spinal cord and cerebrospinal fluid column on magnetic resonance scans. ⋯ This study shows a poor correlation between Pavlov's ratio and the space available for the cord. Therefore, this ratio cannot be solely relied upon to predict the area changes in that plane of the cervical spinal canal.
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Randomized Controlled Trial Comparative Study Clinical Trial
A prospective, randomized, controlled cervical fusion study using recombinant human bone morphogenetic protein-2 with the CORNERSTONE-SR allograft ring and the ATLANTIS anterior cervical plate.
A prospective, randomized, pilot clinical trial compared recombinant human bone morphogenetic protein-2 (rhBMP-2) with iliac crest autograft bone for the treatment of human cervical disc disease. ⋯ This pilot study demonstrates the feasibility of using rhBMP-2 safely and effectively in the cervical spine.
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Comparative Study Guideline
Updated method guidelines for systematic reviews in the cochrane collaboration back review group.
Descriptive method guidelines. ⋯ Systematic reviews need to be conducted as carefully as the trials they report and, to achieve full impact, systematic reviews need to meet high methodologic standards.
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Comparative Study
A biomechanical comparison of facet screw fixation and pedicle screw fixation: effects of short-term and long-term repetitive cycling.
A biomechanical study was conducted to assess the stabilization performance of transfacet pedicle screw fixation. ⋯ The stability provided by both transfacet pedicle screw fixation and traditional pedicle screw fixation was not compromised after repetitive cycling. In this model, transfacet pedicle screw fixation appears equivalent biomechanically to traditional pedicle screw fixation.