A method for assessing displacement of the talus relative to an axis of the foot and lower leg, which includes marking the anatomy of a test subject to enable tracking of the movement of the talus relative to the axis, and aligning the foot in a first position, and observing the displacement of the talus as indicated by the marking relative to the first position while allowing a displacement of the rear foot bone complex. Another embodiment includes a system for assessing pronation in a foot.