The Gait Profile Score (GPS) gives a single measurement of an individual’s gait pattern. It is the average root mean square (RMS) difference between a patient’s and normative data [1]. The GPS includes the traditional measurement of the foot as a single rigid segment in two-dimensions. The Oxford Foot Model (OFM) was designed to measure tibia, hindfoot, forefoot and hallux motion in three dimensions [2]. The Foot Profile Score (FPS) is a single number, designed to be the equivalent of the GPS, based on OFM kinematics.@en