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Patients were assessed using outcome scales, static ankle ROM, and a stair descent gait analysis for dynamic ankle ROM, a day prior to surgery and one year postoperatively. Eight healthy subjects were assessed using the same modalities upon recruitment. Operative outcomes and variables during stair descent were documented and compared among the preoperative, postoperative, and healthy groups. A curve analysis, one\u2010dimensional statistical parametric mapping, was performed to compare the dynamic ankle kinematics and muscle activation curves over the entire normalised time series.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The functional outcomes of patients with concurrent LAI and OLT were significantly worse than those of healthy subjects preoperatively, but were partially improved postoperatively. Patients had decreased static and dynamic ROM preoperatively, and static ROM did not significantly increase postoperatively (preoperative, 39.6\u2009\u00b1\u200911.3; postoperative, 44.9\u2009\u00b1\u20097.1; healthy, 52.0\u2009\u00b1\u20094.6; <jats:italic>p<\/jats:italic>\u2009=\u20090.021). Patients showed increased dynamic ankle flexion ROM (preoperative, 41.2\u2009\u00b1\u200911.6; postoperative, 53.6\u2009\u00b1\u20099.0; healthy, 53.9\u2009\u00b1\u20093.4; <jats:italic>p<\/jats:italic>\u2009=\u20090.012) postoperatively, as well as increased peroneus longus activation (preoperative, 35.8\u2009\u00b1\u200912.0; postoperative, 55.4\u2009\u00b1\u200925.1; healthy, 71.9\u2009\u00b1\u200913.4; <jats:italic>p<\/jats:italic>\u2009=\u20090.002) and muscle co\u2010contraction of the tibialis anterior and peroneus longus (preoperative, 69.4\u2009\u00b1\u200923.4; postoperative, 88.4\u2009\u00b1\u20099.3; healthy, 66.2\u2009\u00b1\u200918.1; <jats:italic>p<\/jats:italic>\u2009=\u20090.045).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Patients with concurrent LAI and OLT had decreased static and dynamic sagittal ankle ROM and altered neuromuscular activation patterns. The arthroscopic modified Brostr\u00f6m procedure and microfracture did not significantly increase the static sagittal ankle ROM. However, the dynamic sagittal ankle ROM, peroneus longus activation and muscle co\u2010contraction of the tibialis anterior and peroneus longus increased postoperatively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-022-06993-6","type":"journal-article","created":{"date-parts":[[2022,5,14]],"date-time":"2022-05-14T17:02:57Z","timestamp":1652547777000},"page":"3888-3897","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Surgical management of concurrent lateral ankle instability and osteochondral lesions of the talus increases dynamic sagittal ankle range of motion"],"prefix":"10.1002","volume":"30","author":[{"given":"Shengxuan","family":"Cao","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Wang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuyun","family":"Jiang","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Gait and Motion Analysis Center, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Yu","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Gait and Motion Analysis Center, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gonghao","family":"Zhang","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> Department of Orthopedics Shanghai Tongren Hospital Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Zhang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiazhang","family":"Huang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Wang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1659-4600","authenticated-orcid":false,"given":"Xin","family":"Ma","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics Huashan Hospital, Fudan University No.12, Middle Wulumuqi Road, Jingan District Shanghai China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,5,14]]},"reference":[{"key":"e_1_2_10_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100715576107"},{"key":"e_1_2_10_3_2","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.2018.7569"},{"key":"e_1_2_10_4_2","unstructured":"AmouyelT BarbierO De L'EscalopierN CordierG BaudrierN BenoistJet al. 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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was obtained from all individual participants included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"Not applicable.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to publish"}}]}}