Disturbances of gait and balance are important clinical problems in patients with normal pressure hydrocephalus. A considerable degree of locomotor disability and increased risk of falls are present in many cases. Accordingly, attempts to develop effective evaluation methods of gait and balance disturbances are made. Posturography and the Computer Dyno Graphy (CDG) system appear to be useful in diagnosis and evaluation of treatment in patients with normal pressure hydrocephalus. Both are non-invasive and repeatable methods that enable accurate evaluation of analyzed parameters at time intervals.