{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T00:33:10Z","timestamp":1783384390954,"version":"3.54.6"},"reference-count":43,"publisher":"Springer Science and Business Media LLC","issue":"12","license":[{"start":{"date-parts":[[2020,4,8]],"date-time":"2020-04-08T00:00:00Z","timestamp":1586304000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2020,4,8]],"date-time":"2020-04-08T00:00:00Z","timestamp":1586304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Arch Orthop Trauma Surg"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n<jats:title>Introduction<\/jats:title>\n<jats:p>Aim of this study was to biomechanically compare two different acetabular cup fixation constructs in terms of fracture fixation for displaced acetabular fractures involving the anterior column with hemitransverse fracture under partial and full weight-bearing conditions.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Two different reinforcement rings designed as cages for primary THA were biomechanically tested in terms of managing a complex acetabular fracture. Single-leg stance cyclic loading was performed to assess fracture gap movement and fragment rotation. Twelve hemi pelvis Sawbones were divided into two groups: primary THA with acetabulum roof reinforcement plate (ARRP) (<jats:italic>n<\/jats:italic>\u2009=\u20096) and primary THA with Burch\u2013Schneider reinforcement cage (BSRC) (<jats:italic>n<\/jats:italic>\u2009=\u20096).<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>During loading under partial weight-bearing (250\u00a0N) fracture gap movement tended to be larger in the BSRC group as compared to the ARRP group. Under full weight-bearing conditions, the ARRP showed 60% significantly less motion (<jats:italic>p<\/jats:italic>\u2009=\u20090.035) of the <jats:italic>os ilium<\/jats:italic> to <jats:italic>os ischii<\/jats:italic> gap compared to BSRC. Fracture gap movements between the <jats:italic>os ilium<\/jats:italic> and <jats:italic>spina iliaca<\/jats:italic> fragments were significantly reduced by 76% (<jats:italic>p<\/jats:italic>\u2009=\u20090.048) for ARRP in contrast to BSRC. The ARRP group also demonstrated significantly less movement in the fracture gaps <jats:italic>os ischii<\/jats:italic> to <jats:italic>quadrilateral plate<\/jats:italic> (62% reduction, <jats:italic>p<\/jats:italic>\u2009=\u20090.009) and <jats:italic>quadrilateral plate<\/jats:italic> to <jats:italic>spina iliaca<\/jats:italic> (87% reduction, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). Significantly less rotational movement of the <jats:italic>quadrilateral plate<\/jats:italic> to the <jats:italic>os ilium<\/jats:italic> was exhibited by the ARRP group (<jats:italic>p<\/jats:italic>\u2009=\u20090.015).<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>The presented acetabulum roof-reinforcement plate (ARRP) provides stable conditions at the acetabular component with adequate stabilization of a displaced acetabular fracture.<\/jats:p>\n<\/jats:sec>","DOI":"10.1007\/s00402-020-03433-3","type":"journal-article","created":{"date-parts":[[2020,4,8]],"date-time":"2020-04-08T11:02:39Z","timestamp":1586343759000},"page":"1947-1954","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Comparison of two reinforcement rings for primary total hip arthroplasty addressing displaced acetabular fractures: a biomechanical analysis"],"prefix":"10.1007","volume":"140","author":[{"given":"Johannes","family":"Becker","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Winkler","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"von R\u00fcden","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.","family":"Bliven","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Augat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Resch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,4,8]]},"reference":[{"issue":"5","key":"3433_CR1","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1097\/BOT.0b013e3181b2b4ca","volume":"24","author":"RC Andersen","year":"2010","unstructured":"Andersen RC, O'Toole RV, Nascone JW, Sciadini MF, Frisch HM, Turen CW (2010) Modified stoppa approach for acetabular fractures with anterior and posterior column displacement: quantification of radiographic reduction and analysis of interobserver variability. 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Resch is registered inventor of a granted patent for the ARRP, and is contractual recipient of royalties in case of commercial exploitation. All other authors have no conflict of interest relating to this manuscript. Acetabulum roof reinforcement plates were kindly donated by 41medical AG, Bettlach, Switzerland.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"No human participants were involved in this study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"For biomechanical analysis no informed consent was obtained.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}