Spine
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In vitro study about angiogenic potentiality of ligamentum flavum (LF) cells using coculture of human lumbar LF cells and activated macropage-like THP-1 cells. ⋯ LF cells interact with macrophage-like cells to produce angiogenesis-related factors except TGF-β1. Activated LF cells that have been exposed to macrophage, can impact the inducement of angiogenesis-related factors, suggesting that fibrosis and scarring during inflammatory reaction is the major pathomechanism of LF hypertrophy.
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A cross-sectional study. ⋯ A 25-item LSS symptom scale was developed, and its reliability and validity were confirmed.
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Comparative Study
Comparative safety of simultaneous and staged anterior and posterior spinal surgery.
Analysis of population-based national hospital discharge data collected for the Nationwide Inpatient Sample. ⋯ Staging circumferential spine surgery procedures during the same hospitalization offers no mortality benefit and may even expose patients to increased morbidity.
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A computed tomography (CT) study. ⋯ Different anatomic patterns of PT curves could cause different altered positions of esophagus relative to spine and result in different potential risks of esophageal injuries during TPS insertion. Spine surgeons should choose appropriate pedicle screw length to avoid anterior cortical perforation in the PT region of AIS patients.
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A finite element analysis on osteoporotic vertebrae. ⋯ This work underlines the potential of low-dose biplanar x-ray devices to make subject-specific FEMs for prediction of vertebral strength.