Abstract: A support apparatus for supporting the plantar fascia of a foot. The support apparatus is made of an elastic material expandable in the width and longitudinal axis of the foot. When in operative position on the foot, the apparatus frictionally remains in place mid the first metatarsal bone and extends behind the heel of the foot above its os calcis bone such that when the foot is caused to bear weight, the apparatus expands along the longitudinal axis of the foot to its limit of expandability such that the arch of the foot is maintained substantially unchanged as the foot alternates between load bearing and non-load bearing orientations.