{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T02:28:26Z","timestamp":1787797706826,"version":"build-2784847793"},"reference-count":40,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2024,7,15]],"date-time":"2024-07-15T00:00:00Z","timestamp":1721001600000},"content-version":"vor","delay-in-days":14,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002341","name":"Research Council of Finland","doi-asserted-by":"publisher","award":["323168"],"award-info":[{"award-number":["323168"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Research Council of Finland","doi-asserted-by":"publisher","award":["323473"],"award-info":[{"award-number":["323473"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002341","name":"Research Council of Finland","doi-asserted-by":"publisher","award":["355678"],"award-info":[{"award-number":["355678"]}],"id":[{"id":"10.13039\/501100002341","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To investigate early structural and mechanical predictors of plantarflexor muscle strength and the magnitude of Achilles tendon (AT) nonuniform displacement at 6 and 12\u2009months after AT rupture.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010five participants (28 males and 7 females; mean\u2009\u00b1\u2009SD age 41.7\u2009\u00b1\u200911.1\u2009years) were assessed for isometric plantarflexion maximal voluntary contraction (MVC) and AT nonuniformity at 6 and 12\u2009months after rupture. Structural and mechanical AT and plantarflexor muscle properties were measured at 2\u2009months. Limb asymmetry index (LSI) was calculated for all variables. Multiple linear regression was used with the 6 and 12\u2009month MVC LSI and 12\u2009month AT nonuniformity LSI as dependent variables and AT and plantarflexor muscle properties at 2\u2009months as independent variables. The level of pre\u2010 and post\u2010injury sports participation was inquired using Tegner score at 2 and 12\u2009months (scale 0\u201310, 10\u2009=\u2009best possible score). Subjective perception of recovery was assessed with Achilles tendon total rupture score (ATRS) at 12\u2009months (scale 0\u2013100, 100=best possible score).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Achilles tendon resting angle (ATRA) symmetry at 2\u2009months predicted MVC symmetry at 6 and 12\u2009months after rupture (<jats:italic>\u03b2<\/jats:italic>\u2009=\u20092.530, 95% CI 1.041\u20134.018, adjusted <jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.416, <jats:italic>p<\/jats:italic>\u2009=\u20090.002; <jats:italic>\u03b2<\/jats:italic>\u2009=\u20091.659, 95% CI 0.330\u20132.988, adjusted <jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.418, <jats:italic>p<\/jats:italic>\u2009=\u20090.016, respectively). At 12\u2009months, participants had recovered their pre\u2010injury level of sports participation (Tegner 6\u2009\u00b1\u20092 points). The median (IQR) ATRS score was 92 (7) points at 12\u2009months.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Greater asymmetry of ATRA in the early recovery phase may be a predictor of plantarflexor muscle strength deficits up to 1\u2009year after rupture.<\/jats:p><jats:p><jats:bold>Trial Registration:<\/jats:bold> This research is a part of \u201cnonoperative treatment of Achilles tendon rupture in Central Finland: a prospective cohort study\u201d that has been registered in <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"http:\/\/clinicaltrials.gov\">ClinicalTrials.gov<\/jats:ext-link> (NCT03704532)<\/jats:p><\/jats:sec>","DOI":"10.1111\/sms.14700","type":"journal-article","created":{"date-parts":[[2024,7,16]],"date-time":"2024-07-16T05:28:54Z","timestamp":1721107734000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Early Predictors of Recovery From Nonoperatively Treated Achilles Tendon Rupture: 1\u2009Year Follow\u2010Up Study"],"prefix":"10.1111","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4291-1614","authenticated-orcid":false,"given":"Maria","family":"Sukanen","sequence":"first","affiliation":[{"name":"Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4  Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3226-8840","authenticated-orcid":false,"given":"Ra\u2019ad\u00a0M.","family":"Khair","sequence":"additional","affiliation":[{"name":"Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4  Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6903-6461","authenticated-orcid":false,"given":"Aleksi","family":"Reito","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Tampere University Hospital  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5026-4560","authenticated-orcid":false,"given":"Ville","family":"Ponkilainen","sequence":"additional","affiliation":[{"name":"Center for Musculoskeletal Diseases Tampere University Hospital  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3340-9390","authenticated-orcid":false,"given":"Juha","family":"Paloneva","sequence":"additional","affiliation":[{"name":"Hospital Nova of Central Finland Wellbeing Services County of Central Finland  Jyv\u00e4skyl\u00e4 Finland"},{"name":"University of Eastern Finland  Kuopio Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5332-1188","authenticated-orcid":false,"given":"Neil","family":"Cronin","sequence":"additional","affiliation":[{"name":"Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4  Jyv\u00e4skyl\u00e4 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