Reciprocal Changes in Sagittal Alignment in Adolescent Idiopathic Scoliosis Patients Following Strategic Pedicle Screw Fixation

Retrospective observational study. To analyze the effect of low-density (LD) strategic pedicle screw fixation on the correction of coronal and sagittal parameters in adolescent idiopathic scoliosis (AIS) patients. LD screw fixation achieves favorable coronal correction, but its effect on sagittal pa...

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Bibliographic Details
Published in:Asian spine journal 2018, 12(2), , pp.300-308
Main Authors: Dumpa, Srikanth Reddy, Shetty, Ajoy Prasad, Aiyer, Siddharth N, Kanna, Rishi Mugesh, Rajasekaran, S
Format: Article
Language:English
Subjects:
Bone implants
Clinical Study
Flexibility
Kyphosis
Low density
Magnetic resonance imaging
Pedicle screws
Radiological outcome
Sacrum
Scoliosis
Spinal fusion
Thorax
정형외과학
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Summary:Retrospective observational study. To analyze the effect of low-density (LD) strategic pedicle screw fixation on the correction of coronal and sagittal parameters in adolescent idiopathic scoliosis (AIS) patients. LD screw fixation achieves favorable coronal correction, but its effect on sagittal parameters is not well established. AIS is often associated with decreased thoracic kyphosis (TK), and the use of multi-level pedicle screws may result in further flattening of the sagittal profile. A retrospective analysis was performed on 92 patients with AIS to compare coronal and sagittal parameters preoperatively and at 2-year follow-up. All patients underwent posterior correction via LD strategic pedicle screw fixation. Radiographs were analyzed for primary Cobb angle (PCA), coronal imbalance, cervical sagittal angle (CSA), TK, lumbar lordosis (LL), pelvic incidence, pelvic tilt (PT), sacral slope (SS), C7 plumb line, spino-sacral angle, curve flexibility, and screw density. PCA changed significantly from 57.6°±13.9° to 19°±8.4° (
ISSN:1976-1902
1976-7846
DOI:10.4184/asj.2018.12.2.300