Long fusion to the pelvis with S2-alar-iliac screws can induce changes in pelvic incidence in adult spinal deformity patients: analysis of predictive factors in a retrospective cohort

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
ChangChun TsengZezhang Zhu

Abstract

To verify whether pelvic incidence (PI) would change in adult spinal deformity (ASD) patients who underwent long instrumentation using S2-alar-iliac (S2AI) screws and to identify factors associated with the change in PI. We retrospectively reviewed all patients who underwent spinal surgery using S2AI screws between November 2014 and January 2017 at our institution. Patients aged 20 years or above with available radiographs were included. According to the change in PI, patients were divided into two groups, group C: PI variance reached 5 or more degrees postoperatively and group NC: PI changed less than 5°. A total of 47 patients (3 males, 44 females; mean age, 52.47 ± 15.80 years) were included in this study. PI significantly decreased from 51.25° ± 14.80° to 40.43° ± 14.23° in group C (n = 26), with a mean change in 11.52° ± 6.17° (P < 0.05), but changed from 47.00° ± 13.18° to 46.57° ± 13.71° in group NC without statistical significance. Intergroup analysis showed that change in PI, preoperative PI-LL, preoperative LL, preoperative SVA, and postoperative PT were significantly different between both groups. Correlation analysis showed that the change in PI and preoperative LL and PI were significantly associated. The formula p...Continue Reading

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Citations

Nov 2, 2018·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Mauro Costa Morais Tavares JuniorOlavo Biraghi Letaif
Apr 3, 2020·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Weiguo ZhuShibao Lu
Sep 17, 2020·Clinics·Mauro Costa Morais Tavares-JúniorOlavo Biraghi Letaif
Jun 27, 2019·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Hongda BaoZezhang Zhu
Jun 23, 2019·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Hiroki ObaTetsuro Ohba
Nov 13, 2020·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Chao WeiLawrence G Lenke

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