{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T22:30:22Z","timestamp":1789425022995,"version":"build-2803163510"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T00:00:00Z","timestamp":1675814400000},"content-version":"vor","delay-in-days":38,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,1,1]],"date-time":"2023-01-01T00:00:00Z","timestamp":1672531200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T00:00:00Z","timestamp":1675814400000},"content-version":"vor","delay-in-days":38,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J. exp. orthop."],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Extensor mechanism disruption is an uncommon and devastating complication after total knee arthroplasty. It negatively affects patients\u2019 quality of life and leads to significant functional limitations and the inability to stand and walk. The purpose of the present study was to evaluate the outcomes of the extensor mechanism reconstruction using Achilles\u2019 tendon allograft after infected total knee arthroplasty. It was hypothesized that it is a safe procedure and that patients will present good clinical and functional results.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Ten patients treated for infra\u2010patellar extensor mechanism disruption after infected total knee arthroplasty were prospectively followed for two years. The mean age of patients was 70.8 (range 55\u201385), with a median BMI of 28.72 \u00b1 2.2\u00a0kg\/m<jats:sup>2<\/jats:sup>. All patients underwent reconstruction using a fresh frozen Achilles tendon allograft. Preoperative and postoperative evaluation included knee\u2010related clinical and functional assessment based on objective and subjective scores, including the knee flexion, the extension lag, the Knee Society Score (KSS) clinical and functional, and the visual analog scale (VAS) for pain at 12 and 24\u00a0months. Radiological evaluation was also performed using the Caton\u2010Deschamps index. Reported complications were also recorded.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Clinical and functional outcomes recorded significant improvements (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05) at the final follow\u2010up compared with baseline as follows: Knee flexion was improved from 66\u00b0 \u00b1 4.8 to 99.7\u00b0 \u00b1 3.9, and the extension lag was decreased from 28.3\u00b0 \u00b1 4.4 to 9\u00b0 \u00b1 2.7. The mean KSS clinical and functional were also improved from 22.6 \u00b1 7.9 to 73.4 \u00b1 3.9 and from 10 \u00b1 13.8 to 55 \u00b1 13.8, respectively. The VAS for pain was decreased from 8.1 \u00b1 1.2 to 1.9 \u00b1 1.2. The Caton\u2010Deschamps index demonstrated a tendency to patella Alta. Two treatment failures were recorded, one patellar dislocation and one re\u2010rupture revised to arthrodesis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Extensor mechanism reconstruction using Achilles\u2019 tendon allograft after infected total knee arthroplasty is an efficient and safe procedure for infra\u2010patellar disruption. The present study\u2019s findings demonstrate that most of the patients (80%) presented significant clinical and functional improvement at two\u2010year follow\u2010up.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s40634-022-00565-w","type":"journal-article","created":{"date-parts":[[2023,2,8]],"date-time":"2023-02-08T05:07:05Z","timestamp":1675832825000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Satisfactory outcomes of patellar tendon reconstruction using achilles\u2019 tendon allograft with bone block after infected total knee arthroplasty"],"prefix":"10.1002","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1466-5479","authenticated-orcid":false,"given":"Theofylaktos","family":"Kyriakidis","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery and Traumatology Erasme University Hospital Universit\u00e9 Libre de Bruxelles Route de Lennik 808 1070 Brussels Belgium"},{"name":"2nd Department of Orthopaedic Surgery and Traumatology Aristotle University of Thessaloniki \u201cG. Gennimatas\u201d General Hospital Ethnikis Aminis 41 54635 Thessaloniki Hellas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charalampos","family":"Pitsilos","sequence":"additional","affiliation":[{"name":"2nd Department of Orthopaedic Surgery and Traumatology Aristotle University of Thessaloniki \u201cG. Gennimatas\u201d General Hospital Ethnikis Aminis 41 54635 Thessaloniki Hellas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacques","family":"Hernigou","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Traumatology Centre Hospitalier EpiCURA Sites Hornu\/Baudour Hainaut Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ren\u00e9","family":"Verdonk","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery and Traumatology Erasme University Hospital Universit\u00e9 Libre de Bruxelles Route de Lennik 808 1070 Brussels Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Hantes","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery Faculty of Medicine University of Thessaly 41500 Larissa Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,2,8]]},"reference":[{"key":"e_1_2_10_2_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.17.01165"},{"key":"e_1_2_10_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2018.01.022"},{"key":"e_1_2_10_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00402\u2010014\u20101951\u20106"},{"key":"e_1_2_10_5_2","doi-asserted-by":"crossref","unstructured":"BarrackRL StanleyT Allen ButlerR(2003) Treating extensor mechanism disruption after total knee arthroplasty.Clin Orthop Relat 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