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Radiological effects were evaluated by measuring the dural sac cross-sectional area (DSCSA) and by morphological grading of nerve root affection.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      For the IPD group, no DSCSA increase was observed at the operated level (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.42); however, a decrease was observed in adjacent levels (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.05). No effect was seen regarding morphological grading (operated level:\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.71\/adjacent level:\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.94). For the ODS group, beneficial effects were seen for the operated level, both regarding DSCSA (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and for morphological grading (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.0001). No changes were seen for adjacent levels (DSCSA;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.47\/morphological grading:\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.95). Postoperatively, a significant difference between the groups existed at the operated level regarding both evaluated parameters (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.003).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>With the spine imaged in an axial loaded position, no significant radiological effects of an IPD could be detected postoperatively at the treated level, while increased DSCSA was displayed for the ODS group. In addition, reduced DSCSA in adjacent levels was detected for the IPD group. Thus, the beneficial effects of IPD implants on the spinal canal must be questioned.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphic abstract<\/jats:title>\n                    <jats:p>These slides can be retrieved under Electronic Supplementary Material.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00586-019-06159-y","type":"journal-article","created":{"date-parts":[[2019,10,4]],"date-time":"2019-10-04T04:03:25Z","timestamp":1570161805000},"page":"122-128","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Axial loading during MRI reveals insufficient effect of percutaneous interspinous implants (Aperius\u2122 PerCLID\u2122) on spinal canal area"],"prefix":"10.1007","volume":"29","author":[{"given":"Hrafnhildur","family":"Hjaltadottir","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanna","family":"Hebelka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caroline","family":"Molinder","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helena","family":"Brisby","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adad","family":"Baranto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2019,10,4]]},"reference":[{"key":"6159_CR1","doi-asserted-by":"publisher","first-page":"625","DOI":"10.1016\/j.spinee.2010.05.006","volume":"10","author":"RA Deyo","year":"2010","unstructured":"Deyo RA (2010) Treatment of lumbar spinal stenosis: a balancing act. 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The complete correct reference is given below.","order":7,"name":"change_details","label":"Change Details","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"The authors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}