{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T13:22:42Z","timestamp":1767705762226,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,2,23]],"date-time":"2022-02-23T00:00:00Z","timestamp":1645574400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Internal fixation using angle stable plates is the treatment standard in periprosthetic fractures around stable implants. To provide instant postoperative full weight-bearing, bicortical screw fixation is advisable but often surgically demanding. This work presents the first clinical results of the LOQTEQ\u00ae VA Periprosthetic Plate (aap Implantate AG, Berlin, Germany), a new plate system to simplify screw placement around implants. This plate system uses insertable hinges that allow for variable angle screw anchorage. Data of 26 patients with a mean age of 80 years and a mean follow-up of 13.9 months were retrospectively collected. Patients were clinically and radiologically examined. Bony union was achieved in 14 out of 15 patients with no signs of non-union or implant loosening. One patient, however, presented with implant failure. Clinical scores demonstrated acceptable results. Since the hinge plates are easy to apply, the first results are promising.<\/jats:p>","DOI":"10.3390\/jcm11051184","type":"journal-article","created":{"date-parts":[[2022,2,23]],"date-time":"2022-02-23T22:54:02Z","timestamp":1645656842000},"page":"1184","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["LOQTEQ\u00ae VA Periprosthetic Plate\u2014A New Concept for Bicortical Screw Fixation in Periprosthetic Fractures: A Technical Note"],"prefix":"10.3390","volume":"11","author":[{"given":"Clemens","family":"K\u00f6sters","sequence":"first","affiliation":[{"name":"Klinik f\u00fcr Orthop\u00e4die, Unfall-und Handchirurgie, Maria-Josef-Hospital Greven, 48268 Greven, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"den Toom","sequence":"additional","affiliation":[{"name":"Klinik f\u00fcr Orthop\u00e4die, Unfall-und Handchirurgie, Maria-Josef-Hospital Greven, 48268 Greven, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4220-2797","authenticated-orcid":false,"given":"Sven","family":"M\u00e4rdian","sequence":"additional","affiliation":[{"name":"Centrum f\u00fcr Muskuloskelettale Chirurgie, Charit\u00e9 Berlin, 13353 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steffen","family":"Ro\u00dflenbroich","sequence":"additional","affiliation":[{"name":"Klinik f\u00fcr Unfall-, Hand-und Wiederherstellungschirurgie, Universit\u00e4tsklinikum M\u00fcnster, 48149 M\u00fcnster, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Metzlaff","sequence":"additional","affiliation":[{"name":"Klinik f\u00fcr Orthop\u00e4die und Unfallchirurgie, St. Joseph Krankenhaus Berlin, 12101 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kiriakos","family":"Daniilidis","sequence":"additional","affiliation":[{"name":"Orthop\u00e4die Traumatologie Centrum Regensburg, 93049 Regensburg, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2551-2910","authenticated-orcid":false,"given":"Jens","family":"Everding","sequence":"additional","affiliation":[{"name":"Klinik f\u00fcr Unfall-, Hand-und Wiederherstellungschirurgie, Universit\u00e4tsklinikum M\u00fcnster, 48149 M\u00fcnster, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"921","DOI":"10.1302\/0301-620X.99B7.BJJ-2016-0974.R1","article-title":"Cardiac disease and advanced age increase the mortality risk following surgery for periprosthetic femoral fractures","volume":"99-B","author":"Perka","year":"2017","journal-title":"Bone Jt. J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1016\/j.arth.2014.11.006","article-title":"Mid-Term Results of 121 Periprosthetic Femoral Fractures: Increased Failure and Mortality Within but not After One Postoperative Year","volume":"30","author":"Galler","year":"2015","journal-title":"J. Arthroplast."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1215","DOI":"10.2106\/JBJS.E.00457","article-title":"Three Hundred and Twenty-one Periprosthetic Femoral Fractures","volume":"88","author":"Lindahl","year":"2006","journal-title":"J. Bone Jt. Surg."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1701","DOI":"10.1007\/s00264-015-2673-2","article-title":"Adequate surgical treatment of periprosthetic femoral fractures following hip arthroplasty does not correlate with functional outcome and quality of life","volume":"39","author":"Schaser","year":"2015","journal-title":"Int. Orthop."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"S66","DOI":"10.1097\/BOT.0b013e31821b8c28","article-title":"Periprosthetic Fractures: Epidemiology and Future Projections","volume":"25","author":"Leung","year":"2011","journal-title":"J. Orthop. Trauma"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"424","DOI":"10.1111\/j.1445-2197.2007.04087.x","article-title":"Periprosthetic femoral fractures after total hip arthroplasty","volume":"77","author":"Young","year":"2007","journal-title":"ANZ J. Surg."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"S77","DOI":"10.1097\/BOT.0b013e31821b8c3b","article-title":"Periprosthetic Proximal Femur Fractures: Current Concepts","volume":"25","author":"Parvizi","year":"2011","journal-title":"J. Orthop. Trauma"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"8","DOI":"10.2106\/00004623-200412002-00003","article-title":"Treatment Protocol for Proximal Femoral Periprosthetic Fractures","volume":"86","author":"Parvizi","year":"2004","journal-title":"J. Bone Jt. Surg."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"713","DOI":"10.1302\/0301-620X.96B6.34040","article-title":"The Unified Classification System (UCS): Improving our understanding of periprosthetic fractures","volume":"96-B","author":"Duncan","year":"2014","journal-title":"Bone Jt. J."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1009","DOI":"10.1007\/s00113-012-2317-6","article-title":"Versorgung periprothetischer und periimplant\u00e4rer Frakturen","volume":"115","author":"Raschke","year":"2012","journal-title":"Der Unfallchirurg"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1193","DOI":"10.1007\/s00402-017-2745-4","article-title":"Locking attachment plate fixation around a well-fixed stem in periprosthetic femoral shaft fractures","volume":"137","author":"Kim","year":"2017","journal-title":"Arch. Orthop. Trauma. Surg."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1749","DOI":"10.1007\/s00264-015-2787-6","article-title":"Bicortical screw fixation provides superior biomechanical stability but devastating failure modes in periprosthetic femur fracture care using locking plates","volume":"39","author":"Gwinner","year":"2015","journal-title":"Int. Orthop."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"988","DOI":"10.1016\/j.clinbiomech.2013.09.005","article-title":"Mechanical behavior of fixation components for periprosthetic fracture surgery","volume":"28","author":"Lenz","year":"2013","journal-title":"Clin. Biomech."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"861","DOI":"10.1007\/s00590-021-02969-3","article-title":"Biomechanics of periprosthetic femur fractures and early weightbearing","volume":"31","author":"Khwaja","year":"2021","journal-title":"Eur. J. Orthop. Surg. Traumatol."},{"key":"ref_15","first-page":"150","article-title":"Periprosthetic fracture fixation in Vancouver B1 femoral shaft fractures: A biomechanical study comparing two plate systems","volume":"24","author":"Tiedemann","year":"2020","journal-title":"J. Orthop. Transl."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"302","DOI":"10.1055\/s-0031-1298530","article-title":"Locking Attachment Plate\u2014Erste Erfahrungen","volume":"150","author":"Dumpies","year":"2012","journal-title":"Z. Orthop. Unfall."},{"key":"ref_17","first-page":"234","article-title":"Double plating in Vancouver type B1 periprosthetic proximal femur fractures: A biomechanical study","volume":"35","author":"Gehweiler","year":"2016","journal-title":"J. Orthop. Res."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1002\/jor.23065","article-title":"Enhancing fixation strength in periprosthetic femur fractures by orthogonal plating-A biomechanical study","volume":"34","author":"Lenz","year":"2015","journal-title":"J. Orthop. Res."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"553","DOI":"10.1007\/s00402-016-2407-y","article-title":"The influence of the operation technique and implant used in the treatment of periprosthetic hip and interprosthetic femur fractures: A systematic literature review of 1571 cases","volume":"136","author":"Stoffel","year":"2016","journal-title":"Arch. Orthop. Trauma. Surg."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1016\/j.injury.2014.07.013","article-title":"Functional and radiological outcome of periprosthetic femoral fractures after hip arthroplasty","volume":"46","author":"Moreta","year":"2015","journal-title":"Injury"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Aprato, A., Tosto, F., Comba, A., Mellano, D., Piccato, A., Daghino, W., and Mass\u00e8, A. (2021). The clinical and economic burden of proximal femur periprosthetic fractures. Musculoskelet. Surg., 1\u20136.","DOI":"10.1007\/s12306-020-00694-4"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"931","DOI":"10.1007\/s00590-017-2082-x","article-title":"Surgical treatment of periprosthetic femoral fractures: A retrospective study with functional and radiological outcomes from 2010 to 2016","volume":"28","author":"Caruso","year":"2018","journal-title":"Eur. J. Orthop. Surg. Traumatol."}],"container-title":["Journal of Clinical Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-0383\/11\/5\/1184\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:25:35Z","timestamp":1760135135000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-0383\/11\/5\/1184"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,2,23]]},"references-count":22,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2022,3]]}},"alternative-id":["jcm11051184"],"URL":"https:\/\/doi.org\/10.3390\/jcm11051184","relation":{},"ISSN":["2077-0383"],"issn-type":[{"type":"electronic","value":"2077-0383"}],"subject":[],"published":{"date-parts":[[2022,2,23]]}}}