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Alterations in the kinematics of the pelvis have been hypothesized as a major cause of\n                    <jats:styled-content style=\"fixed-case\">SIJ<\/jats:styled-content>\n                    \u2010related pain. However, definitions of both the range and the extent of physiological movement are controversial, and there are no clear baseline data for pathological alterations. The present study combined a novel biomechanical setup allowing for physiological motion of the lumbosacral transition and pelvis without restricting the\n                    <jats:styled-content style=\"fixed-case\">SIJ<\/jats:styled-content>\n                    movement\n                    <jats:italic>in\u00a0vitro<\/jats:italic>\n                    , combined with optical image correlation. Six fresh human pelvises (81\u00a0\u00b1\u00a010\u00a0years, three females, three males) were tested, with bodyweight\u2010adapted loading applied to the fifth lumbar vertebra and both acetabula. Deformation at the lumbopelvises was determined computationally from three\u2010dimensional image correlation data. Sacroiliac joint motion under the loading of 100% bodyweight primarily consisted of a\n                    <jats:italic>z<\/jats:italic>\n                    \u2010axis rotation (0.16\u00b0) and an inferior translation of the sacrum relative to the ilium (0.32\u00a0mm). Sacroiliac joint flexion\u2010extension rotations were minute (&lt;\u00a00.02\u00b0). Corresponding movements of the\n                    <jats:styled-content style=\"fixed-case\">SIJ<\/jats:styled-content>\n                    were found at the lumbosacral transition, with an anterior translation of L5 relative to the sacrum of \u22120.97\u00a0mm and an inferior translation of 0.11\u00a0mm, respectively. Moreover, a flexion of 1.82\u00b0 was observed at the lumbosacral transition. Within the innominate bone and at the pubic symphysis, small complementary rotations were seen around a vertical axis, accounting for \u22120.10\u00b0 and 0.11\u00b0, respectively. Other motions were minute and accompanied by large interindividual variation. The present study provides evidence of different\n                    <jats:styled-content style=\"fixed-case\">SIJ<\/jats:styled-content>\n                    motions than reported previously when exerted by physiological loading. Sacroiliac joint kinematics were in the sub\u2010degree and sub\u2010millimeter range, in line with previous\n                    <jats:italic>in\u00a0vivo<\/jats:italic>\n                    and\n                    <jats:italic>in\u00a0vitro<\/jats:italic>\n                    findings, largely limited to the sagittal rotation and an inferior translation of the sacrum relative to the ilium. This given physiological loading scenario underlines the relevance of the lumbosacral transition when considering the overall motion of the lumbopelvis, and how relatively little the other segments contribute to overall motion.\n                  <\/jats:p>","DOI":"10.1111\/joa.12924","type":"journal-article","created":{"date-parts":[[2018,12,9]],"date-time":"2018-12-09T19:54:06Z","timestamp":1544385246000},"page":"346-358","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["Physiological\n                    <i>in\u00a0vitro<\/i>\n                    sacroiliac joint motion: a study on three\u2010dimensional posterior pelvic ring kinematics"],"prefix":"10.1111","volume":"234","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8230-9383","authenticated-orcid":false,"given":"Niels","family":"Hammer","sequence":"first","affiliation":[{"name":"Department of Anatomy University of Otago Dunedin New Zealand"},{"name":"Department of Orthopedic and Trauma Surgery University Clinics of Leipzig Germany"},{"name":"Fraunhofer Institute for Machine Tools and Forming Technology IWU Dresden Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Scholze","sequence":"additional","affiliation":[{"name":"Department of Anatomy University of Otago Dunedin New Zealand"},{"name":"Institute of Materials Science and Engineering Chemnitz University of Technology Chemnitz Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Kibsg\u00e5rd","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Oslo University Hospital Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Klima","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Clinics of Leipzig Germany"},{"name":"Orthopaedicus Clinics Leipzig Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Schleifenbaum","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Clinics of Leipzig Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Seidel","sequence":"additional","affiliation":[{"name":"Institute of Cellular and Molecular Physiology Friedrich\u2010Alexander University Erlangen\u2010N\u00fcrnberg (FAU) Erlangen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Werner","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology IWU Dresden Germany"},{"name":"Department of Anatomy University of Leipzig Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronny","family":"Grunert","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Machine Tools and Forming Technology IWU Dresden Germany"},{"name":"Department of Neurosurgery University of Leipzig Leipzig Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,12,9]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/BSD.0b013e318145ab96"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.math.2012.01.010"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1529-9430(01)00081-X"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.4103\/0970-9185.168261"},{"key":"e_1_2_8_6_1","unstructured":"Bruna\u2010RossoC(2014).\u00c9tude biom\u00e9chanique par \u00e9l\u00e9ments finis de dispositifs d'arthrod\u00e8se de la jonction sacro\u2010iliaque. 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