Spine
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A prospective cohort study. ⋯ This study demonstrated that more than half of the patients with cervical OPLL had coexisting OPLL in the thoracic and/or lumbar spine. We strongly recommend computed tomographic analysis of the whole spine for patients with radiographical evidence of OPLL in the cervical spine for the early detection of additional sites of ossification.
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Cross-cultural adaptation and psychometric testing. ⋯ The reliability and construct validity of the Portuguese version of the QBPDS are acceptable to assess functional status of Portuguese-speaking patients with CLBP. .
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A finite element analysis was used. ⋯ Using the Ti2448 screw system is suggested for augmenting single-level PLIF because it induces less disc intradiscal pressure at adjacent levels and the stress-shielding effect at implant-bone surface with stabilization performance compared with the Ti-6Al-4V screw system.
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Comparative Study
Modified Marmot operation versus spinous process transverse cutting laminectomy for lumbar spinal stenosis.
Retrospective comparative cohort study. ⋯ The MM operation was less invasive and produced superior clinical outcomes compared with laminectomy involving exposure of the PVM.
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A retrospective study. ⋯ 3.