MODIFIED CLINICAL TEST OF SENSORY INTERACTION ON BALANCE (mCTSIB)
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The modified Clinical Test of Sensory Interaction on Balance (mCTSIB) is a simplified derivative of the SOT. Although the mCTSIB data set can document the presence of sensory dysfunction, it cannot provide impairment information specific to an individual sensory system. The information provided is designed to help the clinician assess the need for further testing in patients with complaints related to balance dysfunction, and to establish objective baselines for treatment planning and outcome measurement.
A modification of the original CTSIB or "Foam and Dome", the mCTSIB eliminates the "dome" and adds objective (computerized) analysis of the patient's functional balance control to quantify postural sway velocity during the four sensory conditions:
- Eyes open firm surface
- Eyes closed firm surface
- Eyes open unstable surface (foam)
- Eyes closed unstable surface (foam)
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mCTSIB Comprehensive Report
- The COG traces for each trial shown at the top of the report also include numerical values indicating the sway velocity in degrees per second and total duration (in seconds) of the trial.
- Mean Cog Sway Velocity for each condition is shown as a bar graph.
- Comp or Composite Sway is the mean sway velocity averaged over the twelve trials.
- Cog Alignment reflects the patient's COG position relative to the center of the base of support at the start of each trial of the SOT. Normal individuals maintain their COG near the center of the support base.
- The shaded area on each graphic represents performance outside of the normative data range. Green bars indicate performance within the normal range; red bars indicate performance outside the normal range. A numerical value is given at the top of each bar.
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The four conditions of the mCTSIB are designed to simulate visual* and support surface conditions frequently encountered in daily life activities. For most patients with disequilibrium (with or without established etiology) the mCTSIB will reflect their balance problem and provide the information required to support further assessments. This test can also be used to document progress in a rehabilitation program.
Although the results of the mCTSIB can be used to distinguish normal vs. abnormal balance performance, it cannot be used to discern the specific patterns of sensory dysfunction. However, the combination of the mCTSIB, LOS and ENG forms an objective screening tool for balance problems, which can differentiate those patients who will benefit from a course of vestibular rehabilitation from those who require further diagnostic testing and more advanced balance rehabilitation.
*The mCTSIB does not include assessments of the visual system.
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