Predictors of Relevant Changes in Pain and Function for Adolescents With Idiopathic Scoliosis Following Surgery

Retrospective analysis of longitudinal data.To evaluate clinically relevant change in surgical outcomes for Adolescents with Idiopathic Scoliosis (AIS), comparing those who achieved smallest detectable change (SDC) in pain and function at 1-year post-surgery with those who did not, and to evaluate the influencing factors.The SDC is recommended to evaluate the surgical outcomes of AIS. However, little is known about the use of SDC in AIS and its influencing factors.This was a retrospective analysis of longitudinal data from patients who underwent surgical correction at a tertiary spinal centre from 2009 to 2019. Surgical outcomes were assessed at short-term (6 wk, 6 mo) and long-term (1- and 2-years) post-surgery using the Scoliosis Research Society questionnaire (SRS-22r). The difference between "successful" (≥SDC) and "unsuccessful" (