Spinal cord dysfunction contributes to balance impairment in multiple sclerosis patients.

Area of Science:

• Neuroscience
• Neurology
• Clinical Research

Background:

• Balance impairment is a common and disabling symptom in multiple sclerosis (MS).
• The precise neurological origins of MS-related balance deficits remain incompletely understood.
• Existing research suggests potential contributions from central nervous system lesions, including the cerebellum and spinal cord.

Purpose of the Study:

• To investigate the specific contribution of the spinal cord to balance impairment in multiple sclerosis.
• To correlate balance performance with clinical, neurophysiological, and neuroimaging findings in MS patients.
• To elucidate the role of spinal cord lesions and dysfunction in MS-related imbalance.

Main Methods:

• Correlated balance performance (Tinetti Scale) with clinical disability (EDSS) and MRI findings.
• Assessed spinal cord function using somatosensory evoked potentials (SEP) and motor evoked potentials (MEP).
• Identified spinal and cerebellar lesions using Magnetic Resonance Imaging (MRI).

Main Results:

• Linear regression analysis revealed significant negative correlations between balance scores (TS) and overall disability (EDSS).
• Cervical spinal cord lesions were negatively correlated with balance performance.
• Abnormal somatosensory evoked potential (SEP) findings were significantly associated with poorer balance.

Conclusions:

• The spinal cord plays a crucial role in maintaining balance control in individuals with multiple sclerosis.
• Spinal cord dysfunction, particularly affecting ascending somatosensory pathways that transmit proprioceptive information, contributes significantly to balance deficits in MS.
• Combining neurophysiological and neuroimaging techniques provides valuable insights into the pathophysiology of MS-related imbalance.