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 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. ⋯ There is a significant relationship between patient diagnosis and blood loss during posterior spinal fusion surgery in children.
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A retrospective study. ⋯ Based on the results of this study, PSO is considered a reliable and relatively safe procedure for the correction of fixed sagittal imbalance with multiple etiologies.