Abstract
Introduction
Adolescent idiopathic scoliosis (AIS) is the most common form of spinal deformity, by definition is in the coronal plane deformity greater than 10 °, associated with the rotation of the vertebrae and costotransversais joints presents no definite etiology. The treatment of such deformity depends on the magnitude and location of the curve and be in accordance with the degree of growth potential of the patient. The goals of surgery are to correct the curve, restore balance in the coronal and sagittal plane, prevent progression and possible cardiopulmonary complications and consequently a cosmetic improvement.
Objective
To evaluate radiographically the behavior of the secondary curves in the coronal and sagittal plane in AIS patients classificad as Lenke I, who underwent surgical treatment of posterior arthrodesis selective in fellow up the two years.
Methods
A prospective study where of analyzed 40 patients with AIS, 33 female. The measurement of used radiographic parameters followed the recommended by Cobb with fellow up the 2 years.
Results
The mean Cobb index in the anteroposterior radiographs preoperatively examination was 29.97 ° for proximal thoracic curve, 59.08 ° for main thoracic curve and 35.26 ° for lumbar curve. The average postoperative was 19,56°, 14,73° and 12.5 ° respectively, with percentage of 34.73% correction, 75.06% and 64.64% for the respective curves
Conclusion
Surgical treatment by selective arthrodesis AIS Lenke type I provides correction of compensatory curves in the coronal and sagittal plane maintenance in fellow up the two years.