{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T07:43:09Z","timestamp":1782978189636,"version":"3.54.5"},"reference-count":39,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T00:00:00Z","timestamp":1639612800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background and Objectives: The stability of the pelvic ring mainly depends on the integrity of its posterior part. Percutaneous sacroiliac (SI) screws are widely implanted as standard of care treatment. The main risk factors for their fixation failure are related to vertical shear or transforaminal sacral fractures. The aim of this study was to compare the biomechanical performance of fixations using one (Group 1) or two (Group 2) standard SI screws versus one SI screw with bone cement augmentation (Group 3). Materials and Methods: Unstable fractures of the pelvic ring (AO\/OTA 61-C1.3, FFP IIc) were simulated in 21 artificial pelvises by means of vertical osteotomies in the ipsilateral anterior and posterior pelvic ring. A supra-acetabular external fixator was applied to address the anterior fracture. All specimens were tested under progressively increasing cyclic loading until failure, with monitoring by means of motion tracking. Fracture site displacement and cycles to failure were evaluated. Results: Fracture displacement after 500 cycles was lowest in Group 3 (0.76 cm [0.30] (median [interquartile range, IQR])) followed by Group 1 (1.42 cm, [0.21]) and Group 2 (1.42 cm [1.66]), with significant differences between Groups 1 and 3, p = 0.04. Fracture displacement after 1000 cycles was significantly lower in Group 3 (1.15 cm [0.37]) compared to both Group 1 (2.19 cm [2.39]) and Group 2 (2.23 cm [3.65]), p \u2264 0.04. Cycles to failure (Group 1: 3930 \u00b1 890 (mean \u00b1 standard deviation), Group 2: 3676 \u00b1 348, Group 3: 3764 \u00b1 645) did not differ significantly between the groups, p = 0.79. Conclusions: In our biomechanical setup cement augmentation of one SI screw resulted in significantly less displacement compared to the use of one or two SI screws. However, the number of cycles to failure was not significantly different between the groups. Cement augmentation of one SI screw seems to be a useful treatment option for posterior pelvic ring fixation, especially in osteoporotic bone.<\/jats:p>","DOI":"10.3390\/medicina57121368","type":"journal-article","created":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T21:32:40Z","timestamp":1639690360000},"page":"1368","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Does Cement Augmentation of the Sacroiliac Screw Lead to Superior Biomechanical Results for Fixation of the Posterior Pelvic Ring? A Biomechanical Study"],"prefix":"10.3390","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6040-4996","authenticated-orcid":false,"given":"Moritz F.","family":"Lodde","sequence":"first","affiliation":[{"name":"AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland"},{"name":"Department for Trauma, Hand and Reconstructive Surgery, University Hospital M\u00fcnster, Albert-Schweitzer-Campus 1, Building W1, Waldeyerstra\u00dfe 1, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. Christoph","family":"Katthagen","sequence":"additional","affiliation":[{"name":"Department for Trauma, Hand and Reconstructive Surgery, University Hospital M\u00fcnster, Albert-Schweitzer-Campus 1, Building W1, Waldeyerstra\u00dfe 1, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5352-8824","authenticated-orcid":false,"given":"Clemens O.","family":"Schopper","sequence":"additional","affiliation":[{"name":"AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland"},{"name":"Department for Orthopaedics and Traumatology, Kepler University Hospital GmbH, Johannes Kepler University Linz, 4040 Linz, Austria"}],"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, Clavadelerstrasse 8, 7270 Davos, 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, Clavadelerstrasse 8, 7270 Davos, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9795-115X","authenticated-orcid":false,"given":"Boyko","family":"Gueorguiev","sequence":"additional","affiliation":[{"name":"AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J.","family":"Raschke","sequence":"additional","affiliation":[{"name":"Department for Trauma, Hand and Reconstructive Surgery, University Hospital M\u00fcnster, Albert-Schweitzer-Campus 1, Building W1, Waldeyerstra\u00dfe 1, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6175-2754","authenticated-orcid":false,"given":"Ren\u00e9","family":"Hartensuer","sequence":"additional","affiliation":[{"name":"Department for Trauma, Hand and Reconstructive Surgery, University Hospital M\u00fcnster, Albert-Schweitzer-Campus 1, Building W1, Waldeyerstra\u00dfe 1, 48149 M\u00fcnster, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"373","DOI":"10.1007\/s00113-020-00893-5","article-title":"Trends in der operativen Therapie von Frakturen des Beckenrings: Eine bundesweite Analyse von OPS-Daten zwischen 2005 und 2017","volume":"124","author":"Lodde","year":"2020","journal-title":"Unfallchirurg"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1097\/00005131-199902000-00007","article-title":"Early fixation of the vertically unstable pelvis: The role of iliosacral screw fixation of the posterior lesion","volume":"13","author":"Keating","year":"1999","journal-title":"J. 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