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Eur Spine J ; 26(Suppl 4): 533-538, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28349268

RESUMO

PURPOSE: The aim of this study is to understand how many anchor sites are necessary to obtain maximum posterior correction of idiopathic scoliotic curve and if the alloy of instrumentation, stainless steel or titanium, may have a role in the percent of scoliosis correction. METHODS: We reviewed 143 consecutive patients, affected by AIS (Lenke 1-2), who underwent a posterior spinal fusion with pedicle screw-only instrumentation between 2002 and 2005. According to the implant density and alloy used we divided the cohort in four groups. RESULTS: All 143 patients were reviewed at an average follow-up of 7, 2 years, the overall final main thoracic curve correction averaged 61.4%, whereas the implant density within the major curve averaged 71%. A significant correlation was observed between final% MT correction and preoperative MT flexibility and implant density. CONCLUSIONS: When stainless steel instrumentation is used non-segmental pedicle screw constructs seem to be equally effective as segmental instrumentations in obtaining satisfactory results in patients with main thoracic AIS. When the implant alloy used is titanium one, an implant density of ≥60% should be guaranteed to achieve similar results.


Assuntos
Ligas/uso terapêutico , Parafusos Pediculares , Escoliose/cirurgia , Fusão Vertebral , Vértebras Torácicas/cirurgia , Adolescente , Humanos , Estudos Retrospectivos , Fusão Vertebral/efeitos adversos , Fusão Vertebral/instrumentação , Fusão Vertebral/estatística & dados numéricos
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