Spine
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Case report. ⋯ This is the first report of a synovial cyst hematoma due to anticoagulation therapy. Its magnetic resonance imaging features can be similar to synovial cyst, especially when it is hemorrhagic. Spinal decompression was the definitive treatment.
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An in vitro human cadaveric biomechanical study. ⋯ In general, CHARITE discs preserved operated- and other-level motions. Fusion simulations affected motion redistribution at other levels, including adjacent levels.
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Numerical techniques were used to study the occipito-atlantoaxial complex. ⋯ The findings from the validation of this newly developed model coincide with the experimental studies so that its application helps contribute to a more comprehensive understanding of the biomechanics of the craniocervical region.
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Clinical Trial
Clinical outcome of symptomatic unilateral stress injuries of the lumbar pars interarticularis.
A prospective case-series study. ⋯ The increased incidence of the unilateral lumbar pars stress injuries or frank defect on the contralateral side in a throwing sports, e.g., cricket (fast bowling), may be related to the hand dominance of the individual. Nonoperative treatment for patients with a unilateral lumbar pars stress injuries or spondylolysis resulted in a high rate of success, with 81% (34/42) of patients avoiding surgery. If symptoms persist beyond a reasonable period, i.e., 6 months, and reverse gantry CT scan confirms a nonhealing defect of the pars interarticularis, one may consider a unilateral direct repair of the defect with good functional outcome. Direct repair in patients with spina bifida at the same lumbar level as the unilateral defect may be complicated by nonunion.
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Case Reports
Revision and explantation strategies involving the CHARITE lumbar artificial disc replacement.
A large case series of anterior revision surgery in patients who had complications following lumbar total disc replacement with the CHARITE artificial disc. ⋯ Total disc replacement implant revisions occur largely as a result of technical errors in positioning and sizing of the implant. In addition, adherence to strict patient selection criteria will eliminate many cases of implant failure. When necessary, anterior revision surgery can be performed safely when a strategic approach is used.