Abstract
Purpose: To compare the results of two different surgical methods (translation vs rod derotation) in a correction of double thoracic adolescent idiopathic scoliosis (AIS) using pedicle screw instrumentation. Materials and Methods: Forty-seven patients with double thoracic AIS treated by pedicle screw instrumentation were reviewed retrospectively after a minimum follow-up of 2 years. The patients were divided into two groups; TR group (translation method, n=14) and RD group (rod derotation, n=33). There were no significant differences in the preoperative curve characteristics between the two groups. Results: In the TR group, the preoperative upper thoracic curve of 37±4˚ improved to 24±4˚ (35% correction), and the lower thoracic curve of 52±9˚ improved to 18±5˚ (65% correction). In the RD group, the preoperative upper thoracic curve of 40±7˚ improved to 19±7˚ (51% correction), and the lower thoracic curve of 56±12˚ was improved to 16±6˚ (72% correction). The correction of the upper and lower thoracic curves was significantly better in the RD group (p
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