{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T13:08:44Z","timestamp":1788872924956,"version":"build-2803163510"},"reference-count":34,"publisher":"Springer Science and Business Media LLC","issue":"5","license":[{"start":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T00:00:00Z","timestamp":1778025600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T00:00:00Z","timestamp":1778025600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100004718","name":"Universit\u00e9 de Toulouse","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100004718","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Spine Deform"],"published-print":{"date-parts":[[2026,9]]},"abstract":"Abstract<\/jats:title>\n \n Purpose<\/jats:title>\n \n The preoperative planning of adolescent idiopathic scoliosis (AIS) remains largely debated. We hypothesized that adopting a biomechanical energetic framework could provide valuable insights for exploring the impact of spinal arthrodesis. Using this approach, we conducted a comparative analysis to quantify discrepancies between\n in silico<\/jats:italic>\n simulations derived from preoperative radiographs and the actual three-dimensional spinal alignment obtained from post-operative imaging.\n <\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n \n Fifty-two consecutive patients with Lenke Type 1 AIS (mean age: 16 years; mean thoracic Cobb angle: 52\u00b0) who underwent posterior spinal fusion were included in the analysis. All patients had complete biplanar radiographs at three time points: preoperatively, post-operatively and at two-year follow-up. Discrepancies between\n in silico<\/jats:italic>\n simulated surgery, calculated using preoperative radiographs and a biomechanical model, and actual clinical outcomes were quantified using two metrics: maximum coronal\/sagittal deviations (MaxC\/MaxS) from T1 to L5, and a comprehensive predictability factor (\n \n \n $${\\text{a}}_{\\text{c}}$$<\/jats:tex-math>\n \n \n a<\/mml:mtext>\n c<\/mml:mtext>\n <\/mml:msub>\n <\/mml:math>\n <\/jats:alternatives>\n <\/jats:inline-formula>\n and\n \n \n $${\\text{a}}_{\\text{s}}$$<\/jats:tex-math>\n \n \n a<\/mml:mtext>\n s<\/mml:mtext>\n <\/mml:msub>\n <\/mml:math>\n <\/jats:alternatives>\n <\/jats:inline-formula>\n ) measuring cumulative 3D position discrepancies across 17 vertebral levels, normalized by total spinal length.\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n Mean MaxC was 4.7 mm (SD=4.9) and MaxS was 5.7 mm (SD=3.8). Mean values of\n \n \n $${\\mathbf{a}}_{\\text{c}}$$<\/jats:tex-math>\n \n \n a<\/mml:mi>\n c<\/mml:mtext>\n <\/mml:msub>\n <\/mml:math>\n <\/jats:alternatives>\n <\/jats:inline-formula>\n were 3.4% (SD=3.8) and\n \n \n $${\\mathbf{a}}_{\\text{s}}$$<\/jats:tex-math>\n \n \n a<\/mml:mi>\n s<\/mml:mtext>\n <\/mml:msub>\n <\/mml:math>\n <\/jats:alternatives>\n <\/jats:inline-formula>\n were 4.1% (SD=2.6). Of the cohort, 44 patients (90%) showed very good or good agreement in the coronal\n in silico<\/jats:italic>\n simulation and 43 patients (88%) in the sagittal\n in silico<\/jats:italic>\n simulation. When the coronal and sagittal results were combined, 38 patients (78%) showed very good or good agreement.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n The distribution of biomechanical energy obtained from preoperative radiographs is reliable to simulate spine alignment after arthrodesis in a Lenke 1 AIS cohort.<\/jats:p>\n <\/jats:sec>","DOI":"10.1007\/s43390-026-01353-7","type":"journal-article","created":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T12:50:14Z","timestamp":1778071814000},"page":"1725-1738","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Spinal energy balance can predict post-operative spine alignment in Lenke 1 Adolescent Idiopathic Scoliosis"],"prefix":"10.1007","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1427-5518","authenticated-orcid":false,"given":"Tristan","family":"Langlais","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J\u00e9r\u00f4me Sales","family":"de Gauzy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joe","family":"Rassi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mathilde","family":"Bony","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baptiste","family":"Brun-Cottan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amandine","family":"Eon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franck","family":"Accadbled","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pascal","family":"Swider","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pauline","family":"Assemat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,5,6]]},"reference":[{"key":"1353_CR1","doi-asserted-by":"publisher","first-page":"649","DOI":"10.2106\/JBJS.M.00290","volume":"96","author":"JO Sanders","year":"2014","unstructured":"Sanders JO, Newton PO, Browne RH et al (2014) Bracing for idiopathic scoliosis: how many patients require treatment to prevent one surgery? 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The other authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.","order":1,"name":"Ethics","label":"Conflict of interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Institutional Review Board approval was obtained. Written informed consent was obtained from all subjects (patients) in this study\n .","order":2,"name":"Ethics","label":"Ethical approval and informed consent","group":{"name":"EthicsHeading","label":"Declarations"}}]}}