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Background Surgical treatment of AIS includes several purposes such as arrest deformity progression through a solid fusion, obtain a permanent correction of the deformity and others. Objectives To evaluate the improvement of sagittal spinopelvic parameters and clinical outcomes in patients with adolescent idiopathic scoliosis 2 years after corrective surgery. Methods Radiological and clinical data of 134 consecutive scoliosis patients including 11 boys and 124 girls with the average age of 15.37 years, with AIS Lenke 1, 2, 3, 4, 5 or 6 were included in this retrospective study with 2-year follow-up. Whole spine anterior/posterior and lateral Xray, CT scan and MRI were taken preoperatively, immediately after surgery, at 3 months and 2 years after corrective surgery. Radiological parameters were evaluated and compared pre and post operatively. Result In coronal plan, significant reduction was observed in main curve, proximal curve and distal curve P<0.001, 2 years after corrective surgery. Meanwhile, the translation of apex vertebra decreased p<0.001. But sagittal profile of the patients did not show obvious changes such as LL, TK. The pelvic parameters indicated that PI was 50.6 degrees, PT was 13.8, SS was 37.0 and TPA was 47.5 degrees preoperatively. Vertebral body height increased dramatically just after surgery and showed further in the last follow up. Conclusion The changes in coronal plan was significant 2 years after correction surgery for AIS patients and were not correlated with restoration of sagittal profile Conflict of interest None Sources of funding None
Salimi et al. (Wed,) studied this question.