Spine deformity
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Retrospective, chart review. ⋯ Level III, retrospective, comparative study.
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This is a prospective study of magnetically controlled growing rod (MCGR) patients with particular focus on the timing of rod slippage as it pertains to rod lengthening in early onset scoliosis. Findings suggest that early rod lengthening is related to older patients and reduced distance between magnets. Diminishing length gains were observed after a period of rod usage and returns to baseline after rod exchange.
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Retrospective study. ⋯ Level IV.
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Retrospective cohort analysis. ⋯ Level II, diagnostic.
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The aim of this study was to measure contributions of individual vertebra and disc wedging to coronal Cobb angle in the growing scoliotic spine using sequential magnetic resonance imaging (MRI). Clinically, the Cobb angle measures the overall curve in the coronal plane but does not measure individual vertebra and disc wedging. It was hypothesized that patients whose deformity progresses will have different patterns of coronal wedging in vertebrae and discs to those of patients whose deformities remain stable. ⋯ Sequential MRI data showed complex patterns of deformity progression. Changes to the wedging of individual vertebrae and discs may occur in patients who have no increase in Cobb angle; therefore, the Cobb method alone may be insufficient to capture the complex mechanisms of deformity progression.