{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T15:09:24Z","timestamp":1787065764563,"version":"build-2736575974"},"reference-count":43,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,11,25]],"date-time":"2024-11-25T00:00:00Z","timestamp":1732492800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007291","name":"SUVA","doi-asserted-by":"publisher","award":["Helical plates in Proximal Third Humeral Shaft Fra"],"award-info":[{"award-number":["Helical plates in Proximal Third Humeral Shaft Fra"]}],"id":[{"id":"10.13039\/501100007291","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2025,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Helical plates used for proximal humeral shaft fracture fixation avoid the radial nerve distally as compared to straight plates. To investigate in a human cadaveric model the biomechanical competence of straight lateral plates versus 45\u00b0 helical plates used for fixation of proximal comminuted humeral shaft fractures, eight pairs of human cadaveric humeri were instrumented using either a long straight PHILOS plate (Group 1) or a 45\u00b0 helical plate (Group 2) for treatment of an unstable proximal humeral shaft fracture. All specimens were tested under non\u2010destructive quasi\u2010static loading in axial compression, internal and external rotation, and bending in four directions. Subsequently, progressively increasing cyclic loading in internal rotation was applied until failure and interfragmentary movements were monitored by motion tracking. Axial displacement (mm) was 3.13\u2009\u00b1\u20090.31 in Group 1 and 2.60\u2009\u00b1\u20090.42 in Group 2,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.015. Flexion\/extension deformation (\u00b0) in Group 1 and Group 2 was 0.56\u2009\u00b1\u20090.42 and 0.43\u2009\u00b1\u20090.23,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.551. Varus\/valgus deformation (\u00b0) was 6.39\u2009\u00b1\u20090.44 in Group 1 and 5.13\u2009\u00b1\u20090.87 in Group 2,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.012. Shear (mm) and torsional (\u00b0) displacement were 5.36\u2009\u00b1\u20090.76 and 17.75\u2009\u00b1\u20091.06 in Group 1, and 5.03\u2009\u00b1\u20090.46 and 16.79\u2009\u00b1\u20091.36 in Group 2,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009\u2265\u20090.090. Cycles to catastrophic failure were 10000\u2009\u00b1\u20091401 in Group 1 and 9082\u2009\u00b1\u20091933 in Group 2,\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.708. From a biomechanical perspective, 45\u00b0 helical plating is associated with lower axial and varus\/valgus displacement under axial loading and demonstrates comparable resistance to failure versus straight plating. Therefore, 45\u00b0 helical plates can be considered as a valid alternative to straight plates for treatment of proximal humeral shaft fractures.\n                  <\/jats:p>","DOI":"10.1002\/jor.26020","type":"journal-article","created":{"date-parts":[[2024,11,25]],"date-time":"2024-11-25T20:59:38Z","timestamp":1732568378000},"page":"473-482","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["45\u00b0 helical plates are a valid alternative to straight plates for treatment of proximal humeral shaft fractures"],"prefix":"10.1002","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3440-5615","authenticated-orcid":false,"given":"Tatjana","family":"Pastor","sequence":"first","affiliation":[{"name":"AO Research Institute Davos Davos Switzerland"},{"name":"Department of Orthopaedics and Traumatology B\u00fcrgerspital Solothurn Solothurn Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0484-887X","authenticated-orcid":false,"given":"Ivan","family":"Zderic","sequence":"additional","affiliation":[{"name":"AO Research Institute Davos Davos Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7277-3438","authenticated-orcid":false,"given":"Frank J. P.","family":"Beeres","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic and Trauma Surgery Lucerne Cantonal Hospital Lucerne Switzerland"},{"name":"Department of Health Science and Medicine University of Lucerne Luzern Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nader","family":"Helmy","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Traumatology B\u00fcrgerspital Solothurn Solothurn Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7778-2480","authenticated-orcid":false,"given":"R. Geoff","family":"Richards","sequence":"additional","affiliation":[{"name":"AO Research Institute Davos Davos Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6010-8847","authenticated-orcid":false,"given":"Philipp","family":"Kriechling","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Balgrist University Hospital Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ludmil","family":"Drenchev","sequence":"additional","affiliation":[{"name":"Bulgarian Academy of Sciences, Institute of Metal Science \u201cAcad. A. Balevski\u201d Sofia Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hristo K.","family":"Skulev","sequence":"additional","affiliation":[{"name":"Bulgarian Academy of Sciences, Institute of Metal Science \u201cAcad. A. 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