{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T06:36:34Z","timestamp":1789799794144,"version":"4.0.1"},"reference-count":31,"publisher":"SAGE Publications","issue":"7","license":[{"start":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T00:00:00Z","timestamp":1739836800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T00:00:00Z","timestamp":1739836800000},"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":[[2025,9]]},"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 impact of preoperative C2 slope (C2S) on change in sagittal vertical axis (SVA) and postoperative cervical sagittal imbalance (CSI) after laminoplasty (LP).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Consecutive patients who underwent LP between January 2015 and January 2022 with a minimum of 12-month follow-up were reviewed. The clinical variables and radiographic measurements were assessed. Patients were divided into improvement (\u0394cSVA \u2264 \u221210\u00a0mm), stable (\u221210\u00a0mm \u2264 \u0394cSVA &lt;10\u00a0mm), and CSI groups (\u0394cSVA\u226510\u00a0mm). Correlation analysis was performed to explore the associations between \u0394cSVA and preoperative factors, postoperative change and outcome variables. Multivariable logistics regression was conducted to determine the factors predicting CSI.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Over the 186 enrolled patients, 23 developed CSI. The CSI group presented with significantly lower preoperative cSVA, greater cervical lordosis (CL) and C2S. At the final follow-up, the CSI group presented significantly higher increase in neck pain, C2S and C7S, and greater loss in CL and range of motion at flexion position. Correlation analysis revealed that \u0394cSVA is correlated positively to preoperative CL and surgical segments and negatively to preoperative C2S and cSVA. Multivariable regression revealed that lower preoperative C2S (\n                      <jats:italic>P =<\/jats:italic>\n                      0.026) was risk factor for postoperative CSI, with 8.9 as a potential cut-off value for C2S.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Lower preoperative C2S slope was risk factor for post-laminoplasty CSI. The cut-off value of C2S was 8.9. Laminoplasty should be carefully considered for patients with low C2S due to risk of postoperative CSI.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/21925682251321482","type":"journal-article","created":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T18:56:16Z","timestamp":1739904976000},"page":"3180-3188","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Can Preoperative C2 Slope Predict Postoperative Cervical Sagittal Imbalance After Laminoplasty?"],"prefix":"10.1177","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2611-3954","authenticated-orcid":false,"given":"Qu","family":"Ruomu","sequence":"first","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qin","family":"Siyuan","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"},{"name":"Radiological Department, Peking University Third Hospital, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8648-1647","authenticated-orcid":false,"given":"Wang","family":"Ben","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Yiyuan","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhao","family":"Yanbin","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pan","family":"Shengfa","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Xin","sequence":"additional","affiliation":[{"name":"Orthopedic Department, Peking University Third Hospital, Beijing, China"},{"name":"Engineering Research Center of Bone and Joint Precision Medicine, Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Spinal Disease Research, Peking University, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liu","family":"Zhongjun","sequence":"additional","affiliation":[{"name":"Orthopedic Department, 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