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

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).

Bibliographic Details

Main Authors:	Garcia,Enguer Beraldo, Garcia,Liliane Faria, Garcia Jr,Enguer Beraldo, Gonçalves,Roberto Garcia, Giesbrecht,Saulo Terror, Oliveira,Fernando Henrique Rocha de, Batista,Vinícius Augusto, Costa,Wendel Parreira
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Coluna 2016
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-18512016000100017
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