{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T05:33:56Z","timestamp":1793252036164,"version":"4.5.0"},"reference-count":39,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2025,2,28]],"date-time":"2025-02-28T00:00:00Z","timestamp":1740700800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,2,28]],"date-time":"2025-02-28T00:00:00Z","timestamp":1740700800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Global Spine Journal"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:sec>\n                    <jats:title>Study Design<\/jats:title>\n                    <jats:p>Retrospective study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To investigate the relative curve correction of Proximal Thoracic (PT) and Main Thoracic (MT) scoliosis curves and their relationship with post-operative UIV tilt angle as well as post-operative shoulder imbalance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>151 AIS patients with Lenke type 1 and 2 curves who underwent PSF were reviewed. Relative PT\/MT Correction Rate (RCR), Relative PT\/MT Residual Cobb angle (RRCA) and Post-operative UIV Tilt Angle were investigated for their association with post-operative T1 tilt (medial shoulder balance), Cervical Axis (neck balance) and Clavicle Angle (Lateral Shoulder Balance).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>There were 107 patients with Lenke 1 curves and 44 patients with Lenke 2 curves. Overall, the prevalence of medial shoulder, neck and lateral shoulder imbalance was 27.8%, 23.2% and 9.9%, respectively. There was a significant association between RRCA and medial shoulder, lateral shoulder and neck balance but RCR had a significant association with lateral shoulder and neck balance. There was a significant and strong correlation (r = 0.708) between post-operative UIV tilt angle and post-operative T1 Tilt. Unlike RCR, RRCA had shown a statistically significant correlation to post-operative UIV tilt angle with an r-value of 0.406.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>RRCA had shown a statistically significant correlation with the post-operative UIV tilt angle, and post-operative T1 tilt ie, medial shoulder balance. However, the post-operative UIV tilt angle showed the strongest strength of correlation with the post-operative T1 tilt (r = 0.708).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/21925682251325171","type":"journal-article","created":{"date-parts":[[2025,3,4]],"date-time":"2025-03-04T13:13:33Z","timestamp":1741094013000},"page":"3601-3611","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["The Influence of Relative Curve Correction and Upper Instrumented Vertebra (UIV) Tilt Angle on Post-operative Shoulder Balance Following Posterior Spinal Fusion (PSF) in Lenke Type 1 and 2 Adolescent Idiopathic Scoliosis (AIS) Patients"],"prefix":"10.1177","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7245-0295","authenticated-orcid":false,"given":"Chris Yin","family":"Wei Chan","sequence":"first","affiliation":[{"name":"Universiti 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