Spine
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Comparative Study
What is the incidence of dysphagia after posterior cervical surgery?
Prospective comparative study. ⋯ Both anterior and posterior cervical surgery may result in long-term dysphagia in a small number of patients, perhaps due to loss of motion or postoperative pain. Surgeons should counsel their patients about possibility for dysphagia prior to all cervical spine surgery.
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Feasibility study on the acquisition of lumbar spine kinematic data from upright magnetic resonance images obtained under heavy load carrying conditions. ⋯ Superior and inferior lumbar levels showed different kinematic behaviors under heavy load carrying conditions. These findings suggest a postural, lumbar flexion strategy aimed at centralizing a heavy posterior load over the base of support.
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Retrospective review of prospectively collected data. ⋯ 3.
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Retrospective database analysis. ⋯ 4.
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Evaluation using 3-dimensional screw trajectory software and computed tomographic scans. ⋯ In view of their anatomic feasibility, laminar screws can be a viable alternative to PSs in the upper thoracic spine. Particularly at T3 to T6 where the pedicle width is inherently small, the success rates of laminar screw placement were significantly and consistently higher than those of PS placement. The comparable success rates of laminar screws using commercially available screw sizes further emphasize their potential clinical use.