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STUDY DESIGN: A retrospective study of 78 patients with right thoracic idiopathic scoliosis was done. OBJECTIVES: To evaluate the reliability of the integrated Shape Imaging System scan (Oxford Metrics Ltd, Oxford, UK) in detecting progression of scoliosis and the use of back shape data in predicting scoliosis progression. SUMMARY OF BACKGROUND DATA: At first presentation and every 3-6 months during the follow-up period, all patients underwent integrated Shape Imaging System scans and radiographic examinations, from which the Cobb angle was measured. The follow-up period was 18-49 months (mean = 31.4 months). METHODS: Patients were divided into three groups according to the severity and progression of the Cobb angle. The spinal fusion, brace, and observation groups were compared using analysis of variance and the student's t test to detect significant differences among groups in the progression of deformity as measured by the integrated Shape Imaging System parameters and the Cobb angle. RESULTS: Three of the Integrated Shape Imaging System parameters detected significant progression in the spinal fusion group 1 year earlier than the Cobb angle. Only one of the Integrated Shape Imaging System parameters detected a significant difference in progression between the brace and observation groups. CONCLUSIONS: The Integrated Shape Imaging System technique demonstrated significant changes in this group of patients with progressive scoliosis. Serial measurements of back surface shape, particularly the size of the rib hump, may be predictive of progression. Serial Integrated Shape Imaging System scanning has advantages over serial radiography in the management of idiopathic scoliosis in addition to the avoidance of exposure to ionizing radiation.

Type

Journal article

Journal

Spine (Phila Pa 1976)

Publication Date

01/06/1997

Volume

22

Pages

1223 - 1227

Keywords

Adolescent, Braces, Case-Control Studies, Disease Progression, Female, Follow-Up Studies, Humans, Male, Radiography, Reproducibility of Results, Retrospective Studies, Scoliosis, Spinal Fusion, Time Factors