Numerous of dimensions in which clinicians may make use of while trying to find out foot function. One particular of these is navicular drop. It is a measure of how much the navicular bone moves from any time the feet is in its neutral position to its relaxed position. Additionally a measure associated with how much the arch of the foot drops or falls. Evidently, in case this quantity is a lot, then the foot is flat and probably needs supporting. Most clinicians do not measure this and just observe it, relying on clinical experience. The measurement is done a lot in research on foot function and foot orthotics.