In the article there are presented results of the most recent measurements (carried out in 2008 - 2009) of the children 's feet, with particular attention to the longitudinal arch 's alignment, which was determined with the Clarke's angle. Comparison of obtained data with results of researches carried out in 1976 and 1999 revealed that values of the Clare's angle in children 4-6 years old measured in 2008 and 2009 (AZS) are notably lower than in the previous research. It indicates that the process of the longitudinal arch's development retards over the age of 6 years.
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