For thousands of years, shoes have been worn to protect the feet from injury, and the proper choice and use of footwear are directly relevant to foot health, especially that of children. The aim of this study was to evaluate the association between shoe-related factors (type and frequency of use) and the prevalence of valgus foot in children. This analytical cross-sectional observational study was carried out on a population of children in the first, second or third year of primary education, to analyzing the frequency and type of shoes worn, and to determining the presence or not of valgus foot. The sample consisted of 132 children (of 642 potential subjects), with an average age of 7.53 years (Standard Deviation (SD) 0.80), which was composed of 61 boys (46.2%) and 71 girls (53.8%). The overall prevalence of valgus foot was 45.5% (n = 60). The use of boots 2⁻5 days a week was significantly associated, in both sexes, with a lower prevalence of valgus in the left foot (30.5%, p = 0.009). The use of boots could be associated with a lower presence of valgus, depending on the frequency of wear.
