Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/25/2025

Plantar Fasciitis and Pes Planus Association

Biomechanical Mechanism

  • The flat foot deformity results in increased plantar pressures during walking and standing, particularly in the midfoot region, contributing to repetitive biomechanical stress on the plantar fascia 1

Clinical Implications

  • Offloading interventions are critical—foot deformities like pes planus require properly fitting footwear, extra-depth shoes, custom-made insoles, or orthoses to reduce plantar pressure at high-risk locations 2
  • For patients with both pes planus and loss of protective sensation, the combination significantly increases ulceration risk and requires aggressive preventive footwear interventions 1, 2