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The RCSP cut-off point was explored, in context of both FF prevalence and the relationship between FF and body weight. A total of 205 healthy children, aged 5 to 10 years, participated in a cross-sectional study. Correlation was performed between RCSP and FPI. ROC curve technique was calculated to assess differentiation between groups. A score equal to or greater than 7 on the FPI was used as the \u2018gold standard\u2019 for analysis. The correlation between FPI and RCSP was significant (\n                    <jats:italic>r<\/jats:italic>\n                    \u2009=\u20090.63;\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.01). The discrimination score on the ROC curve (6 points\/degrees) shows that the model can be used to identify FF through RCSP, with a sensitivity of 67% and specificity of 85% returned.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:italic>\u00a0 Conclusion<\/jats:italic>\n                    : The results of this study indicate the role of RCSP for simple, accessible and quick screening of paediatric FF. This is especially pertinent for non-podiatric healthcare professional without specialised paediatric foot knowledge.\n                    <jats:table-wrap>\n                      <jats:table>\n                        <jats:tbody>\n                          <jats:tr>\n                            <jats:td colspan=\"2\">\n                              <jats:bold>What is Known:<\/jats:bold>\n                              <jats:italic>\u2022 Most children develop a normal arch quickly, and flat feet usually resolve on their own between 2 and 6 years of age.<\/jats:italic>\n                              <jats:italic>\u2022 The measurement used to diagnose flat foot in children must be accurate, consistent, and valid to characterize the standard foot position.\u00a0The Resting Calcaneal Stance Position (RCSP) is another widely used measure to evaluate the position of the flat foot in children.<\/jats:italic>\n                            <\/jats:td>\n                          <\/jats:tr>\n                          <jats:tr>\n                            <jats:td colspan=\"2\">\n                              <jats:bold>What is New:<\/jats:bold>\n                              <jats:italic>\u2022 The RCSP cut-off point 6 shows a sensitivity of 67% and a specificity of 85% thanks to the FPI as the Gold standard.<\/jats:italic>\n                              <jats:italic>\u2022 The RCSP is useful for health professionals who are not specialised in pediatric foot health.\u00a0The RCSP is useful to detect flat foot in children.<\/jats:italic>\n                            <\/jats:td>\n                          <\/jats:tr>\n                        <\/jats:tbody>\n                      <\/jats:table>\n                    <\/jats:table-wrap>\n                  <\/jats:p>","DOI":"10.1007\/s00431-023-05354-w","type":"journal-article","created":{"date-parts":[[2023,12,16]],"date-time":"2023-12-16T01:01:50Z","timestamp":1702688510000},"page":"1287-1294","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The resting calcaneal stance position (RCSP): an old dog, with new tricks"],"prefix":"10.1007","volume":"183","author":[{"given":"Carlos","family":"Martinez-Sebastian","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriel","family":"Gijon-Nogueron","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9349-7751","authenticated-orcid":false,"given":"Laura","family":"Ramos-Petersen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristina","family":"Molina-Garcia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rub\u00e9n","family":"S\u00e1nchez-G\u00f3mez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela M.","family":"Evans","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,12,16]]},"reference":[{"key":"5354_CR1","doi-asserted-by":"publisher","first-page":"267","DOI":"10.7547\/0980267","volume":"99","author":"JC D\u2019Amico","year":"2009","unstructured":"D\u2019Amico JC (2009) Letter to the editor. 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