Plantar Fasciitis The plantar fascia is the primary tendon on the bottom of the foot providing padding. It tightly connects to the base of the heel bone, extends through the arch, and reattaches at the ball of the foot just behind the toes. The tension on the tendon creates an arcing of the bones in the middle of the foot allowing those bones natural motion for maintaining balance. Cause: When there is a lack of support thru the arch, the re