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A bivariate two\u2010sided correlation test was performed on all variables in all patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Better performance across all parameters of the heel\u2010rise endurance test correlated with faster walking speed (<jats:italic>r<\/jats:italic>\u2009=\u20090.52\u20130.55), greater peak ankle power (<jats:italic>r<\/jats:italic>\u2009=\u20090.56\u20130.64), shorter stance phase (<jats:italic>r<\/jats:italic>\u2009=\u2009\u22120.52 to \u22120.76) and less peak ankle dorsiflexion angle (<jats:italic>r<\/jats:italic>\u2009=\u2009\u22120.49 to \u22120.64) during gait. Greater ATRA correlated with longer stance time (<jats:italic>r<\/jats:italic>\u2009=\u20090.47), greater peak ankle dorsiflexion angle (<jats:italic>r<\/jats:italic>\u2009=\u20090.48), less heel\u2010rise repetitions (<jats:italic>r<\/jats:italic>\u2009=\u2009\u22120.52) and less heel\u2010rise total work LSI (<jats:italic>r<\/jats:italic>\u2009=\u2009\u22120.44 to \u22120.59).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Greater calf muscle endurance, especially heel\u2010rise total work, is moderately correlated (<jats:italic>r<\/jats:italic>\u2009=\u20090.49\u20130.76) to better ankle biomechanics during gait in patients surgically treated for CATR. The heel\u2010rise endurance test may be a clinical proxy for power development in the ankle joint during gait.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-022-06987-4","type":"journal-article","created":{"date-parts":[[2022,5,20]],"date-time":"2022-05-20T16:08:43Z","timestamp":1653062923000},"page":"3898-3906","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Greater heel\u2010rise endurance is related to better gait biomechanics in patients surgically treated for chronic Achilles tendon rupture"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3498-4223","authenticated-orcid":false,"given":"Anna","family":"Nordenholm","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy University of Gothenburg Medicinaregatan 11\u201013 41390 Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric","family":"Hamrin Senorski","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy University of Gothenburg Medicinaregatan 11\u201013 41390 Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katarina","family":"Nilsson Helander","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedics, Institute of Clinical Sciences Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"M\u00f6ller","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedics, Institute of Clinical Sciences Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roland","family":"Z\u00fcgner","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedics, Institute of Clinical Sciences Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,5,20]]},"reference":[{"key":"e_1_2_11_2_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623\u2010199907000\u201000017"},{"key":"e_1_2_11_3_2","first-page":"660","article-title":"Chronic Achilles Tendon Rupture","volume":"11","author":"Maffulli N","year":"2017","journal-title":"J 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