Abstract: An apparatus is disclosed having a toe support portion, an arch support portion and a heel support portion, each of which are mounted along a longitudinal axis to be aligned with the elongate dimension of the foot, so as to be engageable with the respective portions thereof. The supports are movable along a vertical axis and rotatable about the longitudinal axis. A displacement means is also provided in coupling engagement with each support portion to displace vertically one of the support portions in response to vertical displacement of another of the support portions. A method is also disclosed for determining the neutral alignment position of a foot, while a further method is provided for ascertaining the condition of the posture of a person.