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We have defined a \u201ctrue\u201d anteversion angle (AV angle) in the physiological position of the pelvis in 3D with the largest European population measured to our knowledge.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Material and methods<\/jats:title>\n                <jats:p>We analyzed 258 hemipelvises and created 3D models. We compared the results of our AV angle 3D method with the cross-sectional cuts of the same acetabula. We included factors like side, sex, body mass index, and patient positioning.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Overall, the mean (SD) AV angle was 16.1 (5.9)\u00b0 as measured with the 3D method and 22.0 (6.0)\u00b0 as measured with the 2D method (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001). Measured with both the 3D and the 2D method, the AV angle was significantly larger in female than in male individuals (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001).<\/jats:p>\n                <jats:p>In the 2D method, the AV angle estimation was influenced by the pelvic tilt.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>We propose a more accurate method for the measurement of the AV angle of the acetabulum in a 3D model that is not influenced by patient positioning or pelvic tilt. We provide a computational model that will facilitate operative decisions and improve preoperative planning. We confirm that 3D measurement should be the gold standard in measuring the acetabular anteversion.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s11548-022-02717-w","type":"journal-article","created":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T08:49:40Z","timestamp":1659170980000},"page":"2337-2347","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The \u201ctrue\u201d acetabular anteversion angle (AV angle): 2D CT versus 3D model"],"prefix":"10.1007","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4582-9440","authenticated-orcid":false,"given":"Kira A.","family":"Barlow","sequence":"first","affiliation":[]},{"given":"Zdzislaw","family":"Krol","sequence":"additional","affiliation":[]},{"given":"Pawel","family":"Skadlubowicz","sequence":"additional","affiliation":[]},{"given":"Chao","family":"Dong","sequence":"additional","affiliation":[]},{"given":"Vanja","family":"Zivkovic","sequence":"additional","affiliation":[]},{"given":"Andreas H.","family":"Krieg","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2022,7,27]]},"reference":[{"key":"2717_CR1","doi-asserted-by":"publisher","first-page":"1226","DOI":"10.3390\/app11031228","volume":"11","author":"J Ackermann","year":"2021","unstructured":"Ackermann J, Liebermann F, Hoch A, Snedeker JG, Farshad M, Rahm S, Zingg PO, F\u00fcrnsthal P (2021) Augmented reality based surgical navigation of complex osteotomies-a feasibility study on cadavers. 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For this type of study formal consent was not required.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}