Correction of double thoracic and lumbar adolescent idiopathic scoliosis: Technical note.

Reported techniques for posterior correction of 3D deformity in double thoracic and lumbar curve adolescent idiopathic scoliosis require a high density of implants in the concavities. The present technical note describes separate two-stage correction of the curves without using implants in the concavities. We report a series of 20 patients. Full-spine EOS imaging was performed preoperatively, immediately postoperatively and at a minimum 2 years' follow-up, comparing thoracic Cobb angle (66°, 34° and 38°, respectively), lumbar Cobb angle (56°, 23° and 28°, respectively), thoracic kyphosis, lumbar lordosis, lumbar apical vertebral rotation (21.9°, 7.7° and 8.9°, respectively) and thoracic apical vertebral rotation (15.7°, 7.7° and 8.9°, respectively). Despite differences from the other techniques mentioned here, satisfactory results were obtained with the present technique, minimizing implant density. LEVEL OF EVIDENCE: IV.