RT Journal Article T1 The resting calcaneal stance position (RCSP): an old dog, with new tricks A1 Martínez-Sebastián, Carlos A1 Gijón-Noguerón, Gabriel A1 Ramos Petersen, Laura A1 Molina-García, Cristina A1 Sánchez-Gómez, Rubén A1 Evans, Angela M. K1 Enfermeria K1 Pediatria AB The objective of this study was to establish the accuracy of the resting calcaneal stance position (RCSP) for the assessment of flat foot (FF) in children, aligned to the validity of the foot posture index (FPI). 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 ‘gold standard’ for analysis. The correlation between FPI and RCSP was significant (r = 0.63; p < 0.01). 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. PB Springer Nature YR 2023 FD 2023-12-16 LK https://hdl.handle.net/10630/28870 UL https://hdl.handle.net/10630/28870 LA eng NO Martinez-Sebastian, C., Gijon-Nogueron, G., Ramos-Petersen, L. et al. The resting calcaneal stance position (RCSP): an old dog, with new tricks. Eur J Pediatr (2023). https://doi.org/10.1007/s00431-023-05354-w NO Funding for open access charge: Universidad Málaga/CBUA. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 21 ene 2026