ArticleAsian spine journal2026
Can intraoperative T1 tilt predict postoperative shoulder imbalance in patients with Lenke 2 adolescent idiopathic scoliosis?: a retrospective study in Japan.
Article in Asian spine journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Letter to the editor: Cohort overlap and measurement timing considerations in a study of intraoperative T1 tilt and postoperative shoulder imbalance.Asian spine journal · 2026Article
- Response to the letter to the editor: Can intraoperative T1 tilt predict postoperative shoulder imbalance in patients with Lenke 2 adolescent idiopathic scoliosis?: a retrospective study in Japan.Asian spine journal · 2026Article
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6 authors.
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Abstract
STUDY
designRetrospective cohort study. PURPOSE: To evaluate whether intraoperative changes in T1 tilt can predict the development of postoperative shoulder imbalance (PSI) in patients with Lenke type 2 adolescent idiopathic scoliosis (AIS). OVERVIEW OF LITERATURE: Multiple factors have been associated with PSI, but few studies have specifically investigated intraoperative radiographic predictors, such as changes in T1 tilt, in patients with Lenke type 2 AIS.
methodsFifty patients (45 females, five males) who underwent posterior corrective fusion surgery for Lenke type 2 AIS with at least 2 years of follow-up were included. Radiographic parameters and health-related quality of life were evaluated preoperatively, 1 week postoperatively, and at final follow-up. Intraoperative T1 tilt and upper instrumented vertebra (UIV) tilt were measured in the prone position before and after correction. PSI was defined as radiographic shoulder height (RSH) greater than 15 mm at 1 week postoperatively. Patients were classified into PSI and non-PSI groups. Intergroup comparisons were conducted using the Mann-Whitney U test or chisquare test. Correlations of intraoperative changes in T1 tilt (ΔT1) and UIV tilt (ΔUIV) with changes in RSH (ΔRSH) and clavicle angle (ΔCA) were analyzed.
resultsTwelve patients (24.0%) had PSI at 1 week postoperatively, which persisted in five patients (10.0%) at final follow-up. Intraoperative ΔT1 and ΔUIV were significantly correlated with ΔRSH (R =0.613, p <0.001; R =0.435, p =0.002) and ΔCA (R =0.453, p =0.002; R =0.383, p =0.007). In the PSI group, ΔRSH was strongly correlated with ΔT1 (R =0.678, p =0.015).
conclusionsMinimizing intraoperative changes in T1 tilt may help reduce the risk of PSI in Lenke type 2 AIS.
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