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Related Experiment Video

Updated: Jul 18, 2026

Application of a Dual Upper Limb Task-Oriented Robotic System for the Functional Recovery of the Upper Limb in Stroke Patients
05:28

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Published on: October 11, 2024

Hybrid power-assisted functional electrical stimulation to improve hemiparetic upper-extremity function.

Yukihiro Hara1, Shinji Ogawa, Yoshihiro Muraoka

  • 1Department of Rehabilitation Medicine, Nippon Medical School, Chiba Hokusoh Hospital, Japan.

American Journal of Physical Medicine & Rehabilitation
|November 23, 2006
PubMed
Summary

Hybrid therapy combining functional electrical stimulation and block therapy significantly improved spastic hemiparesis in stroke survivors. This approach enhanced muscle function and reduced spasticity, offering a promising treatment for chronic upper-extremity impairments.

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Published on: April 12, 2016

Area of Science:

  • Neurorehabilitation
  • Biomedical Engineering
  • Physical Therapy

Background:

  • Spastic hemiparesis is a common impairment following stroke, affecting upper extremity function.
  • Chronic spasticity can significantly limit daily activities and quality of life.
  • Existing therapies often have limited efficacy in long-term stroke survivors.

Purpose of the Study:

  • To evaluate the effectiveness of a novel hybrid therapy combining functional electrical stimulation (FES) and block therapy for spastic hemiparesis.
  • To assess the impact of this hybrid therapy on muscle strength, range of motion, and spasticity levels.
  • To explore the potential role of proprioceptive feedback in FES-assisted rehabilitation.

Main Methods:

  • A nonblinded randomized controlled trial involving 16 stroke patients with chronic spastic upper-extremity impairments.
  • Patients received hybrid FES therapy targeting specific extensor muscles for 4 months.
  • Motor point blocks were administered to spastic finger flexor muscles prior to FES application.
  • Surface electrodes delivered FES proportional to integrated electromyography signals.

Main Results:

  • Significant improvements were observed in all patients across key metrics, including electromyography signal strength (root mean square), active range of motion for wrist and finger extension, and spasticity (Modified Ashworth Scale).
  • Two additional clinical tests also demonstrated marked improvements compared to control subjects.
  • The hybrid therapy proved effective in enhancing motor function and reducing spasticity.

Conclusions:

  • Hybrid therapy integrating functional electrical stimulation and block therapy is an effective treatment for chronic spastic hemiparesis.
  • The findings suggest that proprioceptive sensory feedback may play a crucial role in the efficacy of power-assisted FES therapy.
  • This approach offers a viable option for improving functional outcomes in stroke survivors with persistent spasticity.