Healthcare usage and cost for plantar fasciitis: a retrospective observational analysis of the 2010-2018 health insurance review and assessment service national patient sample data.

Background: Plantar fasciitis (PF) is the most common cause of heel pain in adults, and the number of patients and medical expenses are increasing annually. However, studies on this condition are lacking. There is a need to investigate universally administered PF treatment and the associated costs.