{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T05:49:56Z","timestamp":1765777796082,"version":"3.48.0"},"reference-count":41,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Flexible flatfoot is common among school\u2010age children and significantly affects walking efficiency, balance stability, and joint\u2010movement coordination in children. The demands on the skeletal structure and muscle function are increased during running; however, the impact of a flexible flatfoot on children's running capabilities is unclear. In this study, we aimed to investigate the effects of flexible flatfoot on the running function of school\u2010age children. Participants with flat feet (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200928) and typical feet (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200927) ran on a flat surface at their chosen maximum pace. At the same time, the kinematic and dynamic parameters of their lower limb joints were monitored. A two\u2010sample statistical analysis assessed the differences in the lower limbs' three\u2010dimensional kinematic and dynamic parameters during running. The findings revealed a significant reduction in running velocity, stride length, and frequency, and an increased proportion in the support phase (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05) in children with flexible flat feet. The navicular drop time decreased, whereas the dynamic navicular drop height increased (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05). A notable decrease in the maximum plantar flexion and eversion torque, power, and power absorption of the ankle joint was observed (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.01). Furthermore, the maximum flexion torque of the knee and hip joints and hip joint power absorption decreased (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05). The peak ground reaction force in the anteroposterior directions was reduced (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.01). These results indicate that flexible flatfoot can impair the running efficiency of school\u2010age children and lead to diminished motor stability and reduced propulsive and braking capabilities.\n                  <\/jats:p>","DOI":"10.1002\/jor.26034","type":"journal-article","created":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T04:51:21Z","timestamp":1737348681000},"page":"810-817","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Effect of Flexible Flatfoot on the Running Function in School\u2010Age Children"],"prefix":"10.1002","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8556-673X","authenticated-orcid":false,"given":"Yang","family":"Li","sequence":"first","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9034-4680","authenticated-orcid":false,"given":"Juntao","family":"Yan","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4802-0871","authenticated-orcid":false,"given":"Yiyang","family":"Li","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4815-9179","authenticated-orcid":false,"given":"Yan","family":"Yu","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9046-0593","authenticated-orcid":false,"given":"Xiaoying","family":"Lu","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-9562-222X","authenticated-orcid":false,"given":"Jin","family":"Zhang","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4525-9249","authenticated-orcid":false,"given":"Shuyun","family":"Jiang","sequence":"additional","affiliation":[{"name":"1\u20107 Gait and Motion Analysis Center, Yueyang Hospital of Integrative Medicine Shanghai University of Traditional Chinese Medicine Shanghai 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