{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T05:06:40Z","timestamp":1783746400712,"version":"3.55.0"},"reference-count":33,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,11,23]],"date-time":"2021-11-23T00:00:00Z","timestamp":1637625600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,11,23]],"date-time":"2021-11-23T00:00:00Z","timestamp":1637625600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Musculoskelet Disord"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Previous studies have shown a wide range of anatomical classifications of the subtalar joint (STJ) in the population and this is related to the different force line structures of the foot. Different subtalar articular surface morphology may affect the occurrence and development of flat foot deformity, and there are fewer studies in this area. The main objective of our study was to determine the association of different subtalar articular surface with the occurrence and severity of flat foot deformity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We analyzed the imaging data of 289 cases of STJ. The articular surface area, Gissane\u2019s angle and Bohler\u2019s angle of subtalar articular surface of different types were counted. The occurrence and severity of flat foot deformity in different subtalar articular surface were judged by measuring the Meary angle of foot.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      We classified 289 cases of subtalar articular surface into five types according to the morphology. According to Meary angle, the flat foot deformity of Type I and Type IV are significantly severer than Type II (\n                      <jats:italic>P\u2009&lt;\u20090.05<\/jats:italic>\n                      ). Type II (7.65\u2009\u00b1\u20091.38\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ) was significantly smaller than Type I (8.40\u2009\u00b1\u20091.79\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ) in the total joint facet area(\n                      <jats:italic>P\u2009&lt;\u20090.05<\/jats:italic>\n                      ). Type III (9.15\u2009\u00b1\u20091.92\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ) was smaller than Type I (8.40\u2009\u00b1\u20091.79\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ), II (7.65\u2009\u00b1\u20091.38\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ) and IV (7.81\u2009\u00b1\u20091.74\u2009cm\n                      <jats:sup>2<\/jats:sup>\n                      ) (\n                      <jats:italic>P\u2009&lt;\u20090.05<\/jats:italic>\n                      ). Type II (28.81\u2009\u00b1\u20097.44\n                      <jats:sup>\u2218<\/jats:sup>\n                      ) was significantly smaller than Type I (30.80\u2009\u00b1\u20094.61 degrees), and IV (32.25\u2009\u00b1\u20095.02 degrees) in the Bohler\u2019s angle (\n                      <jats:italic>P\u2009&lt;\u20090.05<\/jats:italic>\n                      ). Type II (128.49\u2009\u00b1\u20096.74 degrees) was smaller than Type I (131.58\u2009\u00b1\u20097.32 degrees), and IV (131.94\u2009\u00b1\u20095.80 degrees) in the Gissane\u2019s angle (\n                      <jats:italic>P\u2009&lt;\u20090.05<\/jats:italic>\n                      ).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>After being compared and analyzed the measurement of morphological parameters, joint facet area and fusion of subtalar articular surface were closely related to the severity of flat foot deformity and Type I and IV were more likely to develop severer flat foot deformity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of evidence<\/jats:title>\n                    <jats:p>Level III, retrospective comparative study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12891-021-04872-8","type":"journal-article","created":{"date-parts":[[2021,11,23]],"date-time":"2021-11-23T08:02:27Z","timestamp":1637654547000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Association between subtalar articular surface typing and flat foot deformity: which type is more likely to cause flat foot deformity"],"prefix":"10.1186","volume":"22","author":[{"given":"Lei","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyao","family":"Peng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siyuan","family":"He","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gang","family":"Yi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaogao","family":"Tang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bingkun","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoyou","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wanxue","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuening","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,11,23]]},"reference":[{"key":"4872_CR1","doi-asserted-by":"publisher","first-page":"m295","DOI":"10.1136\/bmj.m295","volume":"368","author":"CYK Tang","year":"2020","unstructured":"Tang CYK, Ng KH, Lai J. 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All procedures were approved by the Ethical Committee of The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University (No. KY2018043). All methods were performed in accordance with the relevant guidelines and regulations.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"All study participants provided verbal consent to take part in the study and our study were approved by the Ethical Committee of The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University (No. KY2018043).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"979"}}