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    Low-Density Pedicle Screw Constructs for Adolescent Idiopathic Scoliosis: Evaluation of Effectiveness and Cost

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    Author
    Tannous, O.O.
    Banagan, K.E.
    Belin, E.J.
    Date
    2018
    Journal
    Global Spine Journal
    Publisher
    SAGE Publications Ltd
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://dx.doi.org/10.1177/2192568217735507
    Abstract
    Study Design: Retrospective cohort study. Objective: To determine whether a low-density (LD) screw construct can achieve curve correction similar to a high-density (HD) construct in adolescent scoliosis. Methods: Patients treated operatively for idiopathic scoliosis between 2007 and 2011 were identified through a database review. A consistent LD screw construct was used. Radiographic assessment included percent correction of major and fractional lumbar curves, T5-T12 kyphosis, and angle of lowest instrumented vertebra (LIV). Costs were compared with HD constructs. Results: Thirty-five patients were included in the analysis. Ages ranged from 12 to 19 years (mean = 14.9 years). Average screw density was 1.2 screws per level (range = 1.07-1.5 screws). Mean percent curve correction at latest follow-up: major curve, 66.9%; fractional lumbar curve, 63%. Average postoperative thoracic kyphosis: 29.5°. Mean LIV angle: 5.6°. Average construct cost was $14 871 per case compared with $23 840 per case if all levels had been instrumented with 2 screws, amounting to an average savings of $9000. Conclusions: Our LD screw construct is among the lowest density constructs reported and achieves curve correction comparable to HD constructs at substantially lower cost. Copyright 2017, Copyright The Author(s) 2017.
    Keyword
    adolescent scoliosis
    cost
    high density
    low density
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044828701&doi=10.1177%2f2192568217735507&partnerID=40&md5=a6a034ddc86f084d9a7b0a5d42bea87b; http://hdl.handle.net/10713/9249
    ae974a485f413a2113503eed53cd6c53
    10.1177/2192568217735507
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    UMB Open Access Articles 2018

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