When the foot pronates an excessive amount of (ie. flattens excessive when strolling), it's got the unintended consequence of knocking Your whole foot joints outside of alignment As you stroll or run. Calcaneal pressure fractures are due to repetitive overload for the heel and most commonly come about straight away https://www.theorthopaedicandpainpractice.com/a-comprehensive-guide-to-treating-foot-heel-pain/