{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:19:48Z","timestamp":1792790388862,"version":"4.5.0"},"reference-count":26,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2023,8,30]],"date-time":"2023-08-30T00:00:00Z","timestamp":1693353600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>When the endoscopic Achilles tendon repair technique is utilized, direct stitching of the ruptured site is challenging due to the frayed tendon stumps. To explore whether undesirable coaptation of the tendon stumps influences the generation of the tendons.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This study is a retrospective analysis of 46 patients who underwent a modified endoscopic Achilles tendon rupture repair from October 2018 to June 2020. Patients were divided into two groups according to the coaptation of tendon stumps on postoperative ultrasonography. Group 1 included 17 cases with undesirable coaptation (&lt;50%), and Group 2 included 29 cases with appropriate coaptation (\u226550%). Magnetic resonance imaging (MRI) was obtained postoperatively at 3, 6, and 12\u2009months to evaluate the tendon morphological construction. Clinical evaluations were performed using the American Orthopedic Foot and Ankle Society (AOFAS) ankle\u2010hind foot score, the Achilles Tendon Total Rupture Score (ATRS), muscle power, and the Achilles tendon resting angle at the final follow\u2010up. Complications were also encountered. The Student's <jats:italic>t<\/jats:italic>\u2010test and the Mann\u2013Whitney <jats:italic>U<\/jats:italic>\u2010test were used to assess differences among both groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The mean follow\u2010up time was 37.5\u2009\u00b1\u200910.6\u2009months in Group 1 and 39.0\u2009\u00b1\u200911.6\u2009months in Group 2, respectively. The average age in Group 1 is slightly older than in Group 2 (37.3\u2009\u00b1\u20096.1 vs. 32.7\u2009\u00b1\u20096.3, <jats:italic>p<\/jats:italic>\u2009=\u20090.021). The tendon cross\u2010section areas and thickness increased initially and decreased later on postoperative MRI evaluation. It also showed a significantly higher signal\/noise quotient (SNQ) in Group 1 at postoperative 3\u2009months. At postoperative 6 and 12\u2009months, the SNQ between both groups was similar. The AOFAS score (95.9\u2009\u00b1\u20095.1 vs. 96.2\u2009\u00b1\u20094.9, <jats:italic>p<\/jats:italic>\u2009=\u20090.832), ATRS score (97.0\u2009\u00b1\u20093.6 vs. 97.7\u2009\u00b1\u20093.3, <jats:italic>p<\/jats:italic>\u2009=\u20090.527), and muscle power (21.38 vs. 24.74, <jats:italic>p<\/jats:italic>\u2009=\u20090.287) were not significantly different between both groups. However, the resting angle of Group 1 was significantly larger than that of Group 2 (4.6\u2009\u00b1\u20092.4 vs. 2.4\u2009\u00b1\u20092.3, <jats:italic>p<\/jats:italic>\u2009=\u20090.004). There was no difference in the complications (<jats:italic>p<\/jats:italic>\u2009=\u20090.628).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Although complete regeneration can be finally achieved, the early stage of tendon stump regeneration can be prolonged due to undesirable coaptation when endoscopic Achilles tendon repair technique is applied. The prolonged high signal duration on MRI indicates the less\u2010than\u2010ideal regeneration of the tendon, which might lead to elongation of the tendon.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.13850","type":"journal-article","created":{"date-parts":[[2023,8,31]],"date-time":"2023-08-31T05:44:03Z","timestamp":1693460643000},"page":"2627-2637","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Correlation between the Coaptation and Regeneration of Tendon Stumps in Endoscopic <scp>Assisted Achilles<\/scp> Tendon Rupture Repair"],"prefix":"10.1111","volume":"15","author":[{"given":"Helin","family":"Wu","sequence":"first","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"},{"name":"The First Clinical Medical School of Southern Medical University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingxian","family":"Dong","sequence":"additional","affiliation":[{"name":"School of Life Science and Technology Huazhong University of Science and Technology  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dandan","family":"Dong","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5105-0196","authenticated-orcid":false,"given":"Shijun","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"},{"name":"The First Clinical Medical School of Southern Medical University  Guangzhou China"},{"name":"Wuhan University of Science and Technology  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Boyu","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"},{"name":"Wuhan University of Science and Technology  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Changwang","family":"Kong","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feng","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics General Hospital of Central Theater Command  Wuhan China"},{"name":"The First Clinical Medical School of Southern Medical University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenguang","family":"Hou","sequence":"additional","affiliation":[{"name":"School of Life Science and Technology Huazhong University of Science and Technology  Wuhan China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,8,30]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/1071100713477621"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.12253"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199907000-00011"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.k5120"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fas.2019.03.010"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-021-02830-7"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.K.00917"},{"key":"e_1_2_11_9_1","first-page":"56","article-title":"Less invasive fixation of acute avulsions of the Achilles tendon: a technical note","author":"Longo UG","year":"2020","journal-title":"Medicina (Kaunas)."},{"key":"e_1_2_11_10_1","first-page":"836","article-title":"Outcomes and complications of open versus minimally invasive repair of acute Achilles tendon ruptures: a systematic review and meta\u2010analysis of randomized controlled trials","volume":"51","author":"Attia AK","year":"2021","journal-title":"Am J Sports Med"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1097\/CORR.0000000000001861"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/os.13615"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546518781826"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/ans.12910"},{"key":"e_1_2_11_15_1","first-page":"1270","article-title":"Editorial commentary: is endoscopy really helpful during repair of acute rupture of the Achilles tendon?","volume":"34","author":"Lui TH","year":"2018","journal-title":"Art Ther"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-021-03818-y"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546508328595"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.07.2260"},{"key":"e_1_2_11_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-020-06208-w"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3302-0"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-013-2557-1"},{"key":"e_1_2_11_22_1","doi-asserted-by":"publisher","DOI":"10.1177\/1071100717742372"},{"key":"e_1_2_11_23_1","first-page":"152","article-title":"Current concepts in the management of subcutaneous tears of the Achilles tendon","volume":"57","author":"Maffulli N","year":"1998","journal-title":"Bull Hosp Jt Dis"},{"key":"e_1_2_11_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0838.1997.tb00122.x"},{"key":"e_1_2_11_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fcl.2007.07.003"},{"key":"e_1_2_11_26_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546519858588"},{"key":"e_1_2_11_27_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546514561435"}],"container-title":["Orthopaedic Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/os.13850","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,4]],"date-time":"2023-10-04T19:26:01Z","timestamp":1696447561000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/os.13850"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,8,30]]},"references-count":26,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2023,10]]}},"alternative-id":["10.1111\/os.13850"],"URL":"https:\/\/doi.org\/10.1111\/os.13850","archive":["Portico"],"relation":{},"ISSN":["1757-7853","1757-7861"],"issn-type":[{"value":"1757-7853","type":"print"},{"value":"1757-7861","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,8,30]]},"assertion":[{"value":"2023-03-09","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-07-19","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-08-30","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}