{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T22:40:10Z","timestamp":1786660810496,"version":"build-2736575974"},"reference-count":15,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Retraction of semitendinosus muscle has been reported after reconstruction of the anterior cruciate ligament with semitendinosus\/gracilis\u2010graft. However, very little data exist on the natural variation in side\u2010to\u2010side length symmetry. The purpose of this study was to investigate the side\u2010to\u2010side asymmetry of semitendinosus muscle length in individuals with ACL reconstruction (ACLR) using the semitendinosus\/gracilis\u2010graft compared to a group of healthy control subjects to establish the level of retraction that can confidently be ascribed the surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Eleven subjects aged 30 (19\u201339) years, with previous unilateral ACLR with the combined semitendinosus\/gracilis tendon graft were recruited. Average follow\u2010up was 6.8 years (0.3\u201313.0) after reconstruction. Ten healthy subjects aged 30 years (23\u201336) with no previous knee surgery served as controls. Bilateral magnetic resonance imaging (MRI) scans were obtained of the thigh from 60\u00a0mm below the knee joint and 700\u00a0mm proximal to this point with a slice thickness of 5\u00a0mm with 5\u00a0mm inter\u2010slice distance. Semitendinosus length was measured on both legs between the distal and proximal musculotendinous junction of the semitendinosus. Length difference between legs was calculated for all participants. Percentage of shortening was expressed relative to the healthy leg.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Subjects who had undergone ACLR had on average 81\u00a0mm (25%) shortening of the semitendinosus on the reconstructed leg compared to the non\u2010reconstructed side. The healthy subjects all had less than 10\u00a0mm difference between legs (&lt;\u20093%). The side\u2010to\u2010side difference was significantly different between the reconstructed patients and the healthy subjects (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study indicates that retraction larger than 10\u00a0mm is a consequence of the tendon harvest and not natural variation. It also supports that persistent retraction of the semitendinosus muscle occurs following harvest of the semitendinosus tendon for ACL graft.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-021-06718-1","type":"journal-article","created":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T12:03:28Z","timestamp":1630497808000},"page":"1706-1710","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Anatomical retraction of the semitendinosus muscle following harvest of the distal semitendinosus tendon for ACL reconstruction"],"prefix":"10.1002","volume":"30","author":[{"given":"M. B.","family":"Speedtsberg","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Human Movement Analysis Laboratory Copenhagen University Hospital Hvidovre Amager Denmark"},{"name":"<!--<label>4<\/label>--> Sports Orthopedic Research Center \u2013 Copenhagen (SORC\u2010C), Department of Orthopedic Surgery Copenhagen University Hospital, Amager\u2010Hvidovre Hospital Ketteg\u00e5rd Alle 30 2650 Hvidovre Amager Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. K.","family":"Zebis","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Physiotherapy, Faculty of Health and Technology University College Copenhagen Hvidovre Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H. B.","family":"Lauridsen","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Human Movement Analysis Laboratory Copenhagen University Hospital Hvidovre Amager Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.","family":"Magnussen","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> Danish Research Centre for Magnetic Resonance Copenhagen University Hospital Hvidovre Amager Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2098-0272","authenticated-orcid":false,"given":"P.","family":"H\u00f6lmich","sequence":"additional","affiliation":[{"name":"<!--<label>4<\/label>--> Sports Orthopedic Research Center \u2013 Copenhagen (SORC\u2010C), Department of Orthopedic Surgery Copenhagen University Hospital, Amager\u2010Hvidovre Hospital Ketteg\u00e5rd Alle 30 2650 Hvidovre Amager Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9]]},"reference":[{"key":"e_1_2_12_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546512449611"},{"key":"e_1_2_12_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2005.07.005"},{"key":"e_1_2_12_4_2","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000001125"},{"key":"e_1_2_12_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010012\u20102125\u20100"},{"key":"e_1_2_12_6_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516651441"},{"key":"e_1_2_12_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010019\u201005374\u2010w"},{"key":"e_1_2_12_8_2","doi-asserted-by":"publisher","DOI":"10.1249\/01.mss.0000230344.71623.51"},{"key":"e_1_2_12_9_2","doi-asserted-by":"publisher","DOI":"10.1111\/sms.12205"},{"key":"e_1_2_12_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jor.2020.07.002"},{"key":"e_1_2_12_11_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516629944"},{"key":"e_1_2_12_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/s40279\u2010021\u201001431\u2010y"},{"key":"e_1_2_12_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010015\u20103732\u20103"},{"key":"e_1_2_12_14_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623\u2010200409000\u201000012"},{"key":"e_1_2_12_15_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.J.00898"},{"key":"e_1_2_12_16_2","unstructured":"Styregruppen for dansk korsb\u00e5nds rekonstruktionsregister(2020)Dansk Korsb\u00e5nds Rekonstruktions Register \u00c5rsrapport 2019; Available via:https:\/\/www.sundhed.dk\/content\/cms\/0\/4700_dkrr_aarsrapport_2020_offentliggorelse.pdf. Accessed 18 Aug 2021"}],"container-title":["Knee Surgery, Sports Traumatology, Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00167-021-06718-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00167-021-06718-1\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00167-021-06718-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1007\/s00167-021-06718-1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T09:39:23Z","timestamp":1760866763000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1007\/s00167-021-06718-1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9]]},"references-count":15,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2022,5]]}},"alternative-id":["10.1007\/s00167-021-06718-1"],"URL":"https:\/\/doi.org\/10.1007\/s00167-021-06718-1","archive":["Portico"],"relation":{},"ISSN":["0942-2056","1433-7347"],"issn-type":[{"value":"0942-2056","type":"print"},{"value":"1433-7347","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,9]]},"assertion":[{"value":"13 November 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"24 August 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 September 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"No conflicts of interest were declared.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The project was exempt from ethical approval by the The Regional Committee on Bioethics for the Capital Region, Denmark (Jr. Nr. 17027313).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent for analysis and publication of data was given by all subjects.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}