Enguer Beraldo Garcia1 
, Liliane Faria Garcia1 , Enguer Beraldo Garcia1 , Roberto Garcia Gonçalves1 , Saulo Terror Giesbrecht1 , Fernando Henrique Rocha de Oliveira1 , Vinícius Augusto Batista1 , Wendel Parreira Costa1
DOI: http://dx.doi.org/
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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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