Table of Contents
Advertisement
CONTENTS
CLINICaL TEST OF SENSORY INTEGRaTION aND BaLaNCE –
CTSIB OR m-CTSIB (MODIFIED CTSIB)
The Clinical Test of Sensory Interaction and Balance (CTSIB) is standardized test for Balance assess-
ment on a static surface. The CTSIB test protocol is well documented in the literature as an effective
test for identifying individuals with mild to severe balance problems. The CTSIB consists of six con-
ditions. The test provides a generalized assessment of how well a patient can integrate various sens-
es with respect to balance and compensate when one or more of those senses are compromised.
•
Condition 1 – Eyes open firm surface: Baseline: Incorporates visual, vestibular and
somatosensory inputs
•
Condition 2 – Eyes closed firm surface: Eliminate visual input to evaluate vestibular and
somatosensory inputs.
•
Condition 3 – Visual conflict on firm surface: Some vision present but information
conflicts with vestibular information. This condition brings in more vestibular and
somatosensory inputs.
•
Condition 4 – Eyes open on a dynamic surface used to evaluate somatosensory interaction
with visually input.
•
Condition 5 – Eyes closed on dynamic surface: used to evaluate somatosensory interaction
with vestibular input
•
Condition 6 – Visual conflict on dynamic surface: Used to evaluate the mediation of visual
with and vestibular and somatosensory inputs.
Another version of this test called the modified CTSIB is often used. The m-CTSIB eliminates
conditions 3 and 6. Biodex Balance products use the m-CTSIB format of 4 conditions as the
default with the ability to include the other 2 if desired.
A note concerning eye glasses for the Visual Conflict condition:
Clinicians that want to do the Visual Conflict conditions will require some type of glasses that
provide a distorted yet transparent image. Commercially available Prism type glasses are com-
monly used. Other improvised glasses are: 3D glasses, or clear safety glasses in which the lenses
have been marred or covered with Scotch™ type tape.
What is being measured during the CTSIB test?
•
Sway Index
•
Stability Index
The Sway Index is really the Standard deviation of the Stability index. The higher the Sway Index.
The more unsteady the person was during the test. The Sway Index is an objective quantification of
what commonly is done with a time-based pass/fail for completing the CTSIB stage in 30 seconds
without falling, or assigning a value of 1 to 4 to characterize the sway. 1= minimal sway, 4 = a fall.
The Stability Index is the average position from center. The Stability index does not indicate
how much the patient swayed only their position. Consider the following example.
If a patient is positioned in a manner that biases their placement from the center, the stability
index will be a large value. However if they swayed very little the standard deviation would be
low. This is evident when you see the COG plots. A patient could have a score of 6.5, yet their
standard deviation would only be .8. The printout tracing will show they did not sway very
much. However, if they were positioned off-center, or even on center– and they swayed a lot
the standard deviation would be higher. Thus the standard deviation is indicative of sway.
If a patient cannot complete a condition, it is noted as "Fell" on results screen and report.
Specific information on Stability index can be found in Appendix A2.
NOte: A standardized indexed foam pad that matches the size of the Balance SD platform is provided.
The foam pad should be used for the dynamic (foam) surface conditions in the CTSIB test.
TESTING
— 8-18 —
Hide quick links:
Advertisement
Table of Contents
