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The way your feet land when you run can cause serious injuries. Photo Credit iStock/Halfpoint. Underpronation, also known as supination, is a foot-positioning problem encountered by runners and other athletes who run during their sport.
Pronation Problems: Signs, Causes & Ways to Correct These Common Posture Issues. Pronation deviations that occur at the feet and ankles â called overpronation or underpronation (also known as supination) â are some of the most common underlying postural problems that adults develop.