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A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation
Published on: April 12, 2016
A home-based rehabilitation program for the hemiplegic upper extremity by power-assisted functional electrical
Yukihiro Hara1, Shinji Ogawa, Kazuhito Tsujiuchi
1Department of Rehabilitation Medicine, Nippon Medical School, Chiba Hokusoh Hospital, Inbagun, Japan. hara-y@nms.ac.jp
Disability and Rehabilitation
|September 14, 2007
Summary
Daily power-assisted functional electrical stimulation (FES) therapy significantly improved upper extremity function in chronic stroke patients. This home program enhanced wrist and finger extension, shoulder flexion, and daily activities for hemiplegic individuals.
Area of Science:
- Neurorehabilitation
- Biomedical Engineering
- Physical Therapy
Background:
- Chronic stroke often results in persistent upper-extremity impairments, significantly impacting patients' quality of life and independence.
- Traditional rehabilitation methods may have limitations in restoring motor function for individuals with long-term spasticity and weakness.
Purpose of the Study:
- To evaluate the efficacy of a daily, home-based power-assisted functional electrical stimulation (FES) program for individuals with chronic stroke and upper-extremity spasticity.
- To determine if FES therapy can lead to measurable improvements in muscle strength, range of motion, and functional capabilities.
Main Methods:
- A randomized controlled trial involving 20 chronic stroke patients with upper-extremity impairments.
- The intervention group utilized a power-assisted FES device for home therapy (approx. 6 days/week, 60 min/session) targeting specific upper extremity muscles.
- Outcome measures included electromyography (EMG) signal strength, active range of motion (ROM), Modified Ashworth Scale (MAS) scores, and functional hand tests, assessed pre- and post-intervention.
Main Results:
- Patients receiving daily power-assisted FES demonstrated statistically significant improvements in maximum voluntary EMG signals (RMS) for key upper extremity muscles.
- Significant gains were observed in active ROM for wrist/finger extension and shoulder flexion.
- The FES group also showed marked reductions in spasticity (MAS scores) and enhanced performance on functional hand tests, facilitating daily living activities.
Conclusions:
- Daily power-assisted FES delivered through a home program is an effective therapeutic approach for improving wrist and finger extension, and shoulder flexion in chronic stroke survivors.
- The findings suggest that proprioceptive sensory feedback, facilitated by the FES system, may be a critical component contributing to the observed functional improvements.
