Spine
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A finite element analysis. ⋯ In models of 1-segment lumbar fusion surgery, the positions of pedicle screws were closely linked with corresponding disc stresses and facet contact forces. However, even in cases of facet violation by pedicle screws, removal of the pedicle screw after fusion completion can reduce facet contract forces and disc stresses under both extension and torsional moments.
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A case report. ⋯ Spinal subarachnoid cysticercosis can occur via direct hematogenous dissemination from a gastrointestinal tract. The primary spinal cysticercosis can be dropped distantly in the spinal cavity by cerebrospinal fluid circulation like intracranial cysticercosis, and extensive spinal subarachnoid cysticercosis can be successfully treated with a combination of surgical removal and cysticidal drugs.
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A retrospective study was conducted to investigate the impact of vertebral endplate cyst formation on union status after lumbar interbody fusion. ⋯ These findings show a relationship between vertebral endplate cyst formation in the early postoperative period and nonunion after lumbar interbody fusion. Endplate cyst formation is a useful early predictor of subsequent nonunion.
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A retrospective review. ⋯ Our findings suggest that in obese patients, the distribution of body mass is more predictive of SSI than the absolute BMI and deserves attention in preoperative evaluation.
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A biomechanical comparison of 2 commonly used posterior surgical procedures for spinal cord decompression in the cervical spine: laminoplasty (open door) and laminectomy. ⋯ Both 2-level and multilevel laminoplasty preserved the C2-T1 range of motion. Laminectomy resulted in a significant increase in C2-T1 motion due to the loss of the posterior structures.