Spine
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An in vitro biomechanical study of different pedicle screw configuration usage on the thoracic spine using a cadaveric model. ⋯ Our results suggest that the most important factor for the acute postoperative stability of spinal fixation is the degree of preoperative or iatrogenic destabilization. The minimum amount of pedicle screws provides adequate stability when there is minimal destabilization of the spine. On the other hand, when anterior column release has been performed or instability exists before surgery, segmental pedicle screw fixation may be necessary to achieve adequate stability.
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Randomized Controlled Trial Multicenter Study Comparative Study
Transdermal fentanyl versus sustained release oral morphine in strong-opioid naïve patients with chronic low back pain.
Open, randomized, parallel group multicenter study. ⋯ TDF and SRM provided equivalent levels of pain relief, but TDF was associated with less constipation. This study indicates that sustained-release strong opioids can safely be used in strong-opioid naïve patients.
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Multicenter Study
Dysphagia after anterior cervical decompression and fusion: prevalence and risk factors from a longitudinal cohort study.
Retrospective analysis of the incidence and prevalence of dysphagia after anterior cervical decompression and fusion (ACDF). ⋯ Duration of preexisting pain and the number of vertebral levels involved in the surgical procedure appear to influence the likelihood of dysphagia after ACDF.
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Review Case Reports
Acute quadriparesis caused by calcification of the entire cervical ligamentum flavum in a white female--report of an unusual case and a brief review of the literature: case report.
Case report. ⋯ To our knowledge, this unusual case of complete calcification of the entire cervical LF has not previously been described. Multilevel laminectomy and fusion can improve neurologic function but may result in kyphosis.
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Case Reports Comparative Study Clinical Trial
Axial symptoms after cervical laminoplasty with C3 laminectomy compared with conventional C3-C7 laminoplasty: a modified laminoplasty preserving the semispinalis cervicis inserted into axis.
Results of C4-C7 laminoplasty with C3 laminectomy and C3-C7 laminoplasty were compared. ⋯ This method was less invasive to the cervical posterior muscles than C3-C7 laminoplasty. This is an effective procedure for preventing postoperative axial symptoms.