{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T16:39:30Z","timestamp":1790354370092,"version":"4.1.0"},"reference-count":37,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T00:00:00Z","timestamp":1715558400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Derotational distal femoral osteotomy (DFO) is the causal treatment for patients with femoral torsional deformity. The fixation is achieved by a unilateral angle\u2010stable plate. Delayed\u2010 or non\u2010unions are one of the main risks of the procedure. An additional contralateral fixation may benefit the outcome. Therefore, we hypothesize that primary stability in DFO can be improved by an additional fixation with a hinge screw or an internal plate.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Derotational DFO was performed in 15 knees and fixed either with an angle\u2010stable plate only (group \u2018None\u2019), with an additional lateral screw (group \u2018Screw\u2019) or with an additional lateral plate (group \u2018Plate\u2019). Biomechanical evaluation was carried out under axial loading of 150\u2009N (partial weight bearing) and 800\u2009N (full weight bearing), followed by internal and external rotation. After linear axial loading in step 1, a cyclic torsional load of 5\u2009Nm was applied under constant axial load in step 2. In step 3, the specimens were unloaded. Micromovements between the distal and proximal parts of the osteotomy were recorded at each step for all specimens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In step 1, the extent of micromovements was highest in group \u2018None\u2019 and lowest in group \u2018Plate\u2019 without being significantly different. In step 2, group \u2018Plate\u2019 showed significantly higher stability, reflected by less rotation and lower micromovements. Increasing the axial load from 150\u00a0to 800\u2009N at step 2 resulted in increased stability in all groups but only reached significance in group \u2018None\u2019.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>An additional contralateral plate significantly increased stability in derotational DFO compared to the unilateral angle\u2010stable plate only. Contrary, a contralateral hinge screw did not provide improved stability.<\/jats:p><\/jats:sec><jats:sec><jats:title>Study Design<\/jats:title><jats:p>Experimental study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ksa.12251","type":"journal-article","created":{"date-parts":[[2024,5,14]],"date-time":"2024-05-14T01:40:41Z","timestamp":1715650841000},"page":"2120-2128","source":"Crossref","is-referenced-by-count":3,"title":["Hinge screw or no hinge stabilization provides decreased stability compared to hinge plate in a biomechanical evaluation of distal femoral derotational osteotomies"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4641-9224","authenticated-orcid":false,"given":"Felix","family":"Ferner","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital Lichtenfels Lichtenfels Germany"},{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"},{"name":"Osteotomie Komitee Deutsche Kniegesellschaft (German Knee Society) Schwarzenbek Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nele","family":"Hammersdorfer","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1647-1774","authenticated-orcid":false,"given":"Jessica","family":"Hembus","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4317-6025","authenticated-orcid":false,"given":"Jan\u2010Oliver","family":"Sa\u00df","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rainer","family":"Bader","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annett","family":"Klinder","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Hiepe","sequence":"additional","affiliation":[{"name":"Institute of Anatomy Rostock University Medical Center Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norman","family":"Holl","sequence":"additional","affiliation":[{"name":"Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology University Medical Center Rostock Rostock Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Lutter","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Rostock University Medical Center Rostock Germany"},{"name":"Osteotomie Komitee Deutsche Kniegesellschaft (German Knee Society) Schwarzenbek Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,5,13]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jor.2019.09.022"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40634-014-0001-1"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-010-1281-3"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-021-06739-w"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jot.2019.06.004"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.22758"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-13-33"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0030-1250691"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-021-04212-4"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-2993-6"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-022-07150-9"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/2325967118775664"},{"key":"e_1_2_12_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-018-5212-z"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-019-05542-y"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-017-1904-7"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2020.02.015"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2017.06.007"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546519869325"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-018-5165-2"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2021.105528"},{"key":"e_1_2_12_22_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-022-04495-1"},{"key":"e_1_2_12_23_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-020-06197-w"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12178-018-9483-2"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-015-2859-7"},{"key":"e_1_2_12_26_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0038-1641144"},{"key":"e_1_2_12_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.csm.2021.07.011"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-022-06078-y"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1177\/03635465231206947"},{"key":"e_1_2_12_30_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.21.00957"},{"key":"e_1_2_12_31_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-021-06466-2"},{"key":"e_1_2_12_32_1","doi-asserted-by":"publisher","DOI":"10.1177\/09544119231197596"},{"key":"e_1_2_12_33_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0271349"},{"key":"e_1_2_12_34_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00064-015-0430-8"},{"key":"e_1_2_12_35_1","doi-asserted-by":"publisher","DOI":"10.1155\/2022\/8672113"},{"key":"e_1_2_12_36_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2016.04.010"},{"key":"e_1_2_12_37_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0244557"},{"key":"e_1_2_12_38_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546520968566"}],"container-title":["Knee Surgery, Sports Traumatology, Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ksa.12251","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T12:56:39Z","timestamp":1760878599000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1002\/ksa.12251"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,13]]},"references-count":37,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2024,8]]}},"alternative-id":["10.1002\/ksa.12251"],"URL":"https:\/\/doi.org\/10.1002\/ksa.12251","archive":["Portico"],"relation":{},"ISSN":["0942-2056","1433-7347"],"issn-type":[{"value":"0942-2056","type":"print"},{"value":"1433-7347","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,13]]}}}