Spine
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Comparative Study
An adapted Chinese version of neck pain and disability scale: validity and reliability.
This is a validation study to evaluate validity and reliability of a translated and culturally adapted Neck Pain and Disability Scale (NPAD). ⋯ The authors report the validation of a Chinese version of NPAD for use in China, which is culturally relevant, reliable, repeatable, and psychometrically sound.
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Retrospective review. ⋯ Intraoperative chest wall violation produced detrimental pulmonary effects, as reflected by reduced percent-predicted values at 10-year follow-up. Posterior-only procedures, which spared the chest wall, showed significant improvements in FVC and FEV(1) absolute values without any change in percent-predicted values.
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In vitro cadaveric study of cervical spinal cord intramedullary pressure (IMP) in kyphotic deformity. ⋯ Cervical lordosis and kyphosis less than +7.5° resulted in no meaningful increase in IMP. Minor cervical kyphosis measuring +7.5° to +21° resulted in 2 to 5 mm Hg increases in IMP. As the cervical kyphotic deformity exceeded +21°, IMP increased significantly. ΔIMP with spinal alignment may help to explain the wide range of "normal" cervical neutral upright sagittal alignment in studies of asymptomatic individuals and may help further define cervical kyphotic deformity.
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Retrospective review of 36 consecutive patients undergoing coronal plane deformity correction with intraoperative skull-femoral traction between 2005 and 2008 with motor evoked potential (MEP)/somatosensory evoked potential monitoring. ⋯ Intraoperative traction is associated with frequent changes in MEP monitoring. The thoracic location of the major curve, increasing Cobb angle, and rigidity of major curve are significant risk factors for changes in MEP with traction. The presence of any MEP recordings irrespective of its amplitude at closure was associated with normal neurological function. Somatosensory evoked potential monitoring did not correlate with the traction induced MEP amplitude changes.
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Retrospective, controlled clinical study. ⋯ The use of an ECD significantly reduced the incidence of clinically relevant misplaced screws in a variety of scoliosis patients, thereby increasing the safety of pedicle screw implantation.