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Pre- and post-operative radiological parameters and postoperative health related quality of life (HRQOL) were examined to determine their correlation coefficients with postoperative C-LSDI. Patients were divided into two groups by the medium number of postoperative C-LSDI: low-stiffness group (C-LSDI\u2009&lt;\u200948 points) and high-stiffness group (C-LSDI\u2009\u2265\u200948 points). Subsequently, differences between the two groups were assessed, and the presumed factors affecting C-LSDI evaluation were further analyzed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Coronal parameters and global sagittal parameters showed significant correlations with postoperative C-LSDI. The correlation coefficients between C-LSDI and Oswestry Disability Index (ODI), Japanese Orthopedic Association-29 (JOA-29), the Scoliosis Research Society-22 questionnaire (SRS-22) Function, and the Short Form-36 Health Survey (SF-36) Physical Component Scores were over 0.5. In multiple linear regression, postoperative sagittal vertical axis (\u03b2\u2009=\u20090.084, <jats:italic>p<\/jats:italic>\u2009=\u20090.025), fusion levels (\u03b2\u2009=\u20092.13, <jats:italic>p<\/jats:italic>\u2009=\u20090.012), and body mass index (\u03b2\u2009=\u20090.867, <jats:italic>p<\/jats:italic>\u2009=\u20090.022) were independent related factors for C-LSDI.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>This study showed that all HRQOLs demonstrated the varying degree of correlations with C-LSDI, of which the ODI, JOA-29, SRS-22 Function, and SF-36 PCS were most relevant, with moderate strength of associations.Moreover, longer fusion levels, higher BMI, and greater postoperative SVA independently affect C-LSDI after long segmental posterior instrumentation and fusion for DLS.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00586-024-08414-3","type":"journal-article","created":{"date-parts":[[2024,7,23]],"date-time":"2024-07-23T02:01:41Z","timestamp":1721700101000},"page":"3552-3558","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Stiffness-related disability following long segmental posterior instrumentation and fusion: is it influenced by postoperative spinopelvic alignment?"],"prefix":"10.1007","volume":"33","author":[{"given":"Jiaqi","family":"Zhang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yinhao","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9413-6141","authenticated-orcid":false,"given":"Yan","family":"Zeng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weishi","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhongqiang","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,7,23]]},"reference":[{"key":"8414_CR1","doi-asserted-by":"publisher","first-page":"548","DOI":"10.1097\/00007632-197911000-00018","volume":"4","author":"B Benner","year":"1979","unstructured":"Benner B, Ehni G (1979) Degenerative lumbar scoliosis. 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The informed consent was waived because this was a retrospective study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"This work was supported by the National Natural Science Foundation of China (ID: 82,272,540). The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Disclosure statement"}}]}}