[Functional electrical stimulation based on a working pattern influences function of lower extremity in subjects with...

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Biomedical Engineering

Background:

• Early stroke often results in impaired lower extremity motor function, impacting mobility and quality of life.
• Functional electrical stimulation (FES) is a rehabilitation technique used to improve motor function after neurological injury.
• Integrating advanced imaging like DTI with targeted FES offers potential for enhanced stroke recovery.

Purpose of the Study:

• To investigate the efficacy of FES, tailored to human walking patterns, in combination with DTI technology for improving lower extremity motor function in early stroke patients.
• To explore the neuroplastic changes associated with different FES configurations using DTI.

Main Methods:

• A randomized controlled trial involving 48 early stroke patients divided into four-channel FES, dual-channel FES, and comfort stimulation groups.
• FES protocols were based on normal walking patterns, targeting specific lower extremity muscles.
• Patients underwent weekly assessments of motor function (FMA, PASS, BBA, BBS, MBI) and DTI imaging before and after a 3-week treatment period.

Main Results:

• All FES groups showed significant improvements in motor function scores compared to pre-treatment.
• The four-channel FES group demonstrated statistically significant improvements in fractional anisotropy (FA) in ipsilateral white matter tracts, indicating structural changes.
• Four-channel FES showed superior outcomes in motor function and MBI scores compared to dual-channel FES and comfort stimulation groups.

Conclusions:

• Functional electrical stimulation based on human walking patterns is more efficacious than traditional dual-channel FES for early stroke patients.
• This advanced FES approach aids in restoring brain structure and function, promoting motor function recovery.
• The findings highlight the potential of combining DTI with patterned FES for personalized stroke rehabilitation.