Abstract: Posturography is a science of upright balance which is controlled by the postural system that organizes the equilibrium. The stabilization of this mechanically unstable body therefore requires a feedback control system that can detect any deviation from the “equilibrium position” to control the appropriate reactions required to return to the original “equilibrium” Postural movement occurs because of the action of a system of strength and moments that are stretched out to a condition of balancing and therefore of equilibrium (unstable). These continuously change because of the internal disturbances such as respiration, cardiac pump, and external interaction with the human–environment system. A posture can be normal or abnormal. A normal posture means a model adapted to the environment; an abnormal posture is a misfit or “disharmony.” In a posture that is not harmonious or well balanced, a series of clinical signs and parameters can be determined by posturography. Postural assessment (posturography) is a quantitative functional evaluation of postural control in static or dynamic conditions. In this chapter, clinical tests and posturographic measures are presented and described as key elements in clinical assessment.