Radiographical Analysis of Flexibility of Idiopatic Scoliosis in Prono and Supino

Abstract

Objective To determine if there is a statistically significant difference in the flexibility of the curves in the adolescent idiopathic scoliosis (AIS) by using lateral inclination radiographs in supine or prone decubitus. Methods We evaluated 19 patients with AIS, waiting for surgery. Radiographs of the patients were performed in orthostatic anteroposterior incidences and right and left lateral inclinations in prone and supine decubitus. The comparison between prone and supine decubitus was performed through the flexibility rates of the curves measured in each position. Results The mean flexibility rates measured in lateral inclination radiographs with the patient in the supine position were 54.4% ± 38.8% in the proximal thoracic curve, 45.8% ± 15.6% in the main thoracic curve, and 80.5% ± 20.7% in the thoracolumbar / lumbar curve. When the lateral inclination radiographs were performed with the patient in the prone position, we observed mean flexibility rates of 66.4% ± 34.3% in the proximal thoracic curve, 50.1% ± 12.8% in the main thoracic curve, and 80.6% ± 19.0% in the thoracolumbar / lumbar curve. Conclusion This present study did not find a statistically significant difference between the flexibility rates of the curves in the prone and supine positions, suggesting that the two radiographic methods analyzed are similar in the evaluation of the flexibility of the curves in adolescent idiopathic scoliosis. Level of evidence II; Development of diagnostic criteria in consecutive patients (with “gold” reference standard applied).

Conservative Idiopathic Scoliosis Treatment With Brace Produced Using 3d Technology

“…The Risser sign was also grouped into Group A (0,1,2) and Group B (3,4,5). 3,9 Fabrication of the WCR The brace fabrication process involved four steps: three-dimensional scanning of the trunk of the patient using CAD/CAM Captevia V3.4® software; planning of the scoliotic curve correction from the scanned images and the digital panoramic anteroposterior spinal radiograph using Rodin 4D® software (Figure 1); production of an individualized mold of the trunk with the proposed correction using robotic technology (Victor Unlimited® robot) from the final file generated by the Rodin 4D® software; and, finally, making the WCR brace in polypropylene using the mold as a base. Figures 2 and 3 illustrate a case from the sample studied, with pre-and post--brace radiographs and short-term aesthetic results (three months), respectively.…”