{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T11:23:15Z","timestamp":1740136995670,"version":"3.37.3"},"reference-count":18,"publisher":"Springer Science and Business Media LLC","issue":"6","license":[{"start":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T00:00:00Z","timestamp":1671667200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T00:00:00Z","timestamp":1671667200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100009401","name":"Medizinischen Fakult\u00e4t, Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen","doi-asserted-by":"publisher","award":["1124"],"award-info":[{"award-number":["1124"]}],"id":[{"id":"10.13039\/501100009401","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Universit\u00e4tsklinik M\u00fcnchen"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Eur J Orthop Surg Traumatol"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>The incidence of atlanto-axial injuries is continuously increasing and often requires surgical treatment. Recently, Harati developed a new procedure combining polyaxial transarticular screws with polyaxial atlas massae lateralis screws via a rod system with promising clinical results, yet biomechanical data is lacking. This biomechanical study consequently aims to evaluate the properties of the Harati technique.\n<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Two groups, each consisting of 7 cervical vertebral segments (C1\/2), were formed and provided with a dens axis type 2 fracture according to Alonzo. One group was treated with the Harms and the other with the Harati technique. The specimen was loaded via a lever arm to simulate extension, flexion, lateral flexion and rotation. For statistical analysis, dislocation (\u00b0) was measured and compared.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>For extension and flexion, the Harati technique displayed a mean dislocation of 4.12\u00b0\u2009\u00b1\u20092.36\u00b0 and the Harms technique of 8.48\u00b0\u2009\u00b1\u20091.49\u00b0 (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). For lateral flexion, the dislocation was 0.57\u00b0\u2009\u00b1\u20090.30\u00b0 for the Harati and 1.19\u00b0\u2009\u00b1\u20090.25\u00b0 for the Harms group (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). The mean dislocation for rotation was 1.09\u00b0\u2009\u00b1\u20090.48\u00b0 for the Harati and 2.10\u00b0\u2009\u00b1\u20090.31\u00b0 for the Harms group (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). No implant failure occurred.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>This study found a significant increase in biomechanical stability of the Harati technique when compared to the technique by Harms et al. Consequently, this novel technique can be regarded as a promising alternative for the treatment of atlanto-axial instabilities.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00590-022-03465-y","type":"journal-article","created":{"date-parts":[[2022,12,22]],"date-time":"2022-12-22T04:21:19Z","timestamp":1671682879000},"page":"2497-2503","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Improving stability of atlantoaxial fusion: a biomechanical study"],"prefix":"10.1007","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9648-0998","authenticated-orcid":false,"given":"Adrian","family":"Cavalcanti Ku\u00dfmaul","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Titus","family":"K\u00fchlein","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Axel","family":"Greiner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandy","family":"Walter","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christopher A.","family":"Becker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manuel","family":"Kistler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bianka","family":"Rubenbauer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Andre\u00df","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wolfgang","family":"B\u00f6cker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jan","family":"Bruder","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,12,22]]},"reference":[{"key":"3465_CR1","doi-asserted-by":"publisher","first-page":"505","DOI":"10.1007\/s12178-016-9368-1","volume":"9","author":"ME Gornet","year":"2016","unstructured":"Gornet ME, Kelly MP (2016) Fractures of the axis: a review of pediatric, adult, and geriatric injuries. 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