Posturography is an integral part of the evaluation of patients with dizziness and
unsteadiness. Posturography serves as a test of a person's stability in a variety of situations.
It provides the physical therapist with information vital to a complete diagnosis and
effective treatment plan for patients at risk of falling.
Posturography analyzes patient gait and stability by measuring vertical force and horizontal
movement. These measurements are used to calculate the patient's functional balance
control and limits of stability. By combining results with a thorough case history, physical
examination, and VNG evaluation, clinicians can effectively identify patients who are at
risk for falling and create a customized treatment program.
Modified Clinical Test of Sensory Interaction on Balance(mCTSIB) The mCTSIB is a modified,
computerized version of the standard CTSIB (foam and dome test). For this test, postural
sway is measured with eyes open and eyes closed on firm and unstable (with foam)
surfaces. These four conditions are designed to reflect the variety of conditions patient
may face in daily life activities. Scores outside normal limits indicate surface conditions
that give the patient more difficulty and help the therapist establish a course of treatment.
This test may be repeated to document progress during therapy.
Limits of Stability (LOS) The limits of stability test quantifies the degree to which a person
can displace their center of gravity without losing balance. Our posturography system
measures reaction time, center of gravity movement velocity, directional control, end point
excursion, and maximum excursion.
