Coluna/Columna (Mar 2016)

ADOLESCENT IDIOPATHIC SCOLIOSIS: EVALUATION ON THE EFFECT OF SCREW DENSITY IN THE CORRECTION

  • Enguer Beraldo Garcia,
  • Liliane Faria Garcia,
  • Enguer Beraldo Garcia Jr,
  • Roberto Garcia Gonçalves,
  • Saulo Terror Giesbrecht,
  • Fernando Henrique Rocha de Oliveira,
  • Vinícius Augusto Batista,
  • Wendel Parreira Costa

DOI
https://doi.org/10.1590/S1808-185120161501153510
Journal volume & issue
Vol. 15, no. 1
pp. 17 – 21

Abstract

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ABSTRACT Objective: The objective was to investigate implant density or the number of screws correlated with the correction of the main curve in patients undergoing surgery for adolescent idiopathic scoliosis (AIS). Methods: We evaluated 112 medical records: 33 patients with screw density of up to 50%, and 79 patients with a density of 100%; all patients underwent surgical correction by posterior approach with transpedicular fixation. Results: In the group of patients with screw density of up to 50% the residual Cobb median was 10°; in the group with 100% density, the median was 7°. Conclusion: Biostatistical analysis showed that the group with up to 50% of screw density presented correction rate of 82.1% and the group with 100% density had correction of about 86.8%. It is therefore concluded that the difference is statistically significant in favor of the fixation with 100% density (p =0.010).

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