Application of SCS for movement disorders and spasticity

Area of Science:

• Neurology
• Rehabilitation Medicine

Background:

• Movement disorders and spasticity significantly impair motor function and quality of life.
• Multiple sclerosis (MS) often presents with gait disturbances and increased muscle tone (spasticity).

Purpose of the Study:

• To evaluate the efficacy of spinal cord stimulation (SCS) in managing movement disorders and spasticity.
• To assess improvements in motor function, gait, and associated symptoms like pain and ataxia.

Main Methods:

• Retrospective analysis of 20 patients with movement disorders and spasticity treated with SCS.
• Assessment of motor function, spasticity, gait, bladder function, ataxia, and pain before and after SCS.
• Follow-up for up to 4 years to monitor long-term outcomes.

Main Results:

• SCS led to quantitative improvements in spasticity reduction, voluntary motor function, and bladder control.
• Patients reported decreased ataxia and pain relief.
• 11 patients experienced more fluent gait, with 6 cases showing reduced spasticity.
• Deterioration of gait and increased tone were noted upon stimulation failure.
• No patient showed deterioration during the 4-year follow-up period.

Conclusions:

• Spinal cord stimulation can effectively improve motor function and reduce spasticity in select patients with movement disorders.
• SCS offers potential benefits for gait disturbances, ataxia, pain, and bladder function in these patient populations.
• While indications require further clarification, SCS shows promise for improving neurological symptoms even in non-progressive conditions.