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Mann\u2013Whitney, Chi-square, and ROC curve statistics were used.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>172\/906 patients (19%) had LSTV (112 females, mean age: 43\u2009\u00b1\u200921\u00a0years), and 89\/172 had type I LSTV (52%), 42\/172 type II (24%), 33\/172 type III (19%), and 8\/172 type IV (5%). The cVPVA and dVPVA in non-articulated patients were significantly higher than those of patients with LSTV, patients with only accessory articulations, and patients with only bony fusion (all <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). The cVPVA and dVPVA in L5 sacralization were significantly higher than in S1 lumbarization (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). The following optimal cutoff was found: cVPVA of 28.2\u00b0 (AUC\u2009=\u20090.797) and dVPVA of 11.1\u00b0 (AUC\u2009=\u20090.782) to identify LSTV; cVPVA of 28.2\u00b0 (AUC\u2009=\u20090.665) and dVPVA of 8\u00b0 (AUC\u2009=\u20090.718) to identify type II LSTV; cVPVA of 25.5\u00b0 (AUC\u2009=\u20090.797) and dVPVA of \u2212\u00a07.5\u00b0 (AUC\u2009=\u20090.831) to identify type III\u2013IV LSTV; cVPVA of 20.4\u00b0 (AUC\u2009=\u20090.693) and dVPVA of \u2212\u00a01.8\u00b0 (AUC\u2009=\u20090.665) to differentiate type II from III\u2013IV LSTV; cVPVA of 17.9\u00b0 (AUC\u2009=\u20090.741) and dVPVA of \u2212\u00a04.5\u00b0 (AUC\u2009=\u20090.774) to differentiate L5 sacralization from S1 lumbarization.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The cVPVA and dVPVA measured on EOS showed good diagnostic performance to identify LSTV, to correctly classify it, and to differentiate L5 sacralization from S1 lumbarization.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00586-020-06565-7","type":"journal-article","created":{"date-parts":[[2020,8,11]],"date-time":"2020-08-11T21:08:09Z","timestamp":1597180089000},"page":"2470-2476","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Segmented lordotic angles to assess lumbosacral transitional vertebra on EOS"],"prefix":"10.1007","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7989-9861","authenticated-orcid":false,"given":"Domenico","family":"Albano","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmelo","family":"Messina","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angelo","family":"Gambino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martina","family":"Gurgitano","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmelo","family":"Sciabica","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giordano Remo","family":"Oliveira Pavan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Salvatore","family":"Gitto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca Maria","family":"Sconfienza","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,8,11]]},"reference":[{"key":"6565_CR1","doi-asserted-by":"publisher","first-page":"858","DOI":"10.1016\/j.spinee.2011.08.005","volume":"11","author":"A Apazidis","year":"2011","unstructured":"Apazidis A, Ricart PA, Diefenbach CM, Spivak JM (2011) The prevalence of transitional vertebrae in the lumbar spine. 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This retrospective study was approved by our Institutional Review Board (Ospedale San Raffaele, Milano, Italy) with a waiver for patients\u2019 informed consent. This study has been conducted according to the principles expressed in the Declaration of Helsinki.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}}]}}