Does the amount of spontaneous thoracic curve correction after selective lumbar fusion for Lenke type 5C adolescent idiopathic scoliosis affect outcomes of posterior deformity correction?

Patients with an STCC rate of ≤ 50% demonstrated worse outcomes compared to those with an STCC rate of > 50%. Patients with greater preoperative MT curve flexibility and less AVT of MT were more likely to achieve an STCC rate of > 50% with SLF. Inclusion of thoracic curve within the fusion construct could be considered for those who do not meet these criteria.