Sensory Integration for Postural Control in Rheumatoid Arthritis Revealed by Computerized Dynamic Posturography

Area of Science:

• Biomechanics
• Neuroscience
• Rheumatology

Background:

• Rheumatoid arthritis (RA) is a systemic autoimmune disease impacting mobility.
• Understanding sensory influences on postural control in RA is crucial for managing mobility impairments.

Purpose of the Study:

• To evaluate postural control in individuals with RA using the Sensory Organization Test (SOT).
• To compare how sensory information affects postural responses in RA patients versus healthy controls.

Main Methods:

• The study involved 28 women with RA and 16 healthy women (Control Group).
• Postural control was assessed using the Smart Balance Master® to measure center of pressure (COP) during SOT conditions (SOT1, SOT2, SOT5).
• Statistical analysis included independent t-tests or Mann-Whitney U-tests.

Main Results:

• Significant differences in postural control were observed between the RA and control groups.
• Both groups showed increased COP velocity in SOT-5 compared to SOT-1.
• The RA group exhibited larger COP measures in SOT-2 and SOT-5 compared to the control group, indicating greater sway in visually and somatosensorily challenging conditions.

Conclusions:

• Individuals with RA demonstrate impaired postural control, particularly when relying on visual and somatosensory information.
• Sensory organization is significantly affected in RA patients, contributing to balance deficits.
• These findings underscore the importance of sensory integration in maintaining balance for individuals with rheumatoid arthritis.