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A wearable ankle-assisted robot for improving gait function and pattern in stroke patients.

Su-Hyun Lee1, Jinuk Kim1,2, Hwang-Jae Lee3

  • 1Department of Physical and Rehabilitation Medicine, Sungkyunkwan University School of Medicine, Suwon, 16419, Republic of Korea.

Journal of Neuroengineering and Rehabilitation
|April 23, 2025
PubMed
Summary

The Gait Enhancing and Motivating System-Ankle (GEMS-A) robot improved walking speed and symmetry in stroke patients. This wearable device shows promise for enhancing gait function and patterns in hemiplegic individuals.

Keywords:
AnkleExoskeletonGaitGait symmetryRoboticsStroke

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Area of Science:

  • Rehabilitation robotics
  • Neurorehabilitation
  • Biomechanics of gait

Background:

  • Stroke-induced hemiplegia often leads to impaired gait, characterized by reduced speed and asymmetry.
  • Restoring normal gait patterns and speed is a primary objective in stroke rehabilitation.

Purpose of the Study:

  • To evaluate the immediate effects of the Gait Enhancing and Motivating System-Ankle (GEMS-A) on gait function and pattern in stroke patients with hemiplegia.

Main Methods:

  • 45 participants with hemiplegia underwent overground gait trials.
  • Two conditions were tested: free gait (FG) and robot-assisted gait (RAG) using the GEMS-A.
  • Gait parameters were measured using a 3D motion capture system and force plates.

Main Results:

  • Robot-assisted gait (RAG) significantly increased gait speed, cadence, and gait symmetry compared to free gait (FG).
  • RAG also improved paretic ankle joint's peak flexion angle and moment.
  • The GEMS-A enhanced propulsive forces by modifying peak ankle force generation.

Conclusions:

  • The GEMS-A is a novel wearable ankle-assist robot.
  • Findings suggest the GEMS-A is a potentially effective device for improving gait in stroke survivors with hemiplegia.