Spine
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Translation, revision, back-translation, and 3-way validity were performed. ⋯ The data showed that the cultural adaptation process was successful and that the adapted instrument demonstrated having excellent psychometric properties, reliable in the Brazilian culture.
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Multicenter Study Comparative Study
Thoracoscopic scoliosis surgery affects pulmonary function less than thoracotomy at 2 years postsurgery.
Prospective evaluation of pulmonary function before and 2 years after surgery following anterior scoliosis instrumentation. ⋯ This study shows a clear advantage to the minimally invasive thoracoscopic approach with regards to pulmonary function when compared with the open thoracotomy approaches.
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Randomized Controlled Trial Comparative Study
A prospective randomized study of unilateral versus bilateral instrumented posterolateral lumbar fusion in degenerative spondylolisthesis.
Prospective randomized study on 82 patients with degenerative lumbar spondylolisthesis, having undergone posterolateral fusion with bilateral or unilateral instrumentation. ⋯ Unilateral instrumentation used for the treatment of degenerative lumbar spondylolisthesis is as effective as bilateral instrumentation when performed in addition to 1- or 2-level posterolateral fusion. The cost of this method is lower, saves time, and reduces possible risk inserting screws in only one side.
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Randomized Controlled Trial
The use of curare during anesthesia to prevent iatrogenic muscle damage caused by lumbar spinal surgery through a posterior approach.
Prospective randomized study of patients undergoing lumbar arthrodesis. ⋯ The use of curare during anesthesia did not limit the muscle damage caused by surgery.
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Controlled Clinical Trial
Postural changes of the dural sac in the lumbar spines of asymptomatic individuals using positional stand-up magnetic resonance imaging.
Positional magnetic resonance imaging (MRI) study of control subjects. ⋯ A significant posture-dependent difference of the dural sac cross-sectional area at the level of intervertebral disc in asymptomatic volunteers has been demonstrated. When the posture changed from supine to standing position, lumbar dural sac volume expanded by the increased pressure of cerebrospinal fluid, and the dural sac cross-sectional area increased. The smallest values were found in the supine position.