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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXVII | Pages 9 - 9
1 Jun 2012
Hamzaoglu A Berk H Alanay A Ozturk C
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Introduction

The potential structural effect of the sacral tilt on the development of disc wedging adjacent to lowest instrumented vertebra (LEV), and consequent postoperative coronal trunk decompensation in the surgical treatment of idiopathic scoliosis are well known. The aim of this study is firstly to establish the possible role of sacral tilt, limb length inequality, and associated pelvic girdle anomalies in the cause of idiopathic scolisosis, and secondly to determine the effect of sacral tilt on adjacent disc wedging below LEV in some idiopathic curves such as thoracolumbar/lumbar curves, and double major curves postoperatively.

Methods

Between 2006 and 2008, 159 patients with idiopathic scoliosis from outpatient clinics were included in analyses. In all patients, standing posteroanterior and lateral spinal column and Ferguson radiographs were routinely taken. If direct radiographs suggested iliac bone asymmetry, hemi-pelvis volume measurements were done with CT scan. Curve type, sacral tilt, L5 tilt, iliac asymmetry, and limb-length differences were measured. As a second part of study, 87 surgically treated patients with double major curves were examined retrospectively in terms of adjacent subjacent disc wedging below LEV and sacral tilt.