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Modular ankle robotics training in early subacute stroke: a randomized controlled pilot study.

Larry W Forrester¹, Anindo Roy², Amanda Krywonis³

¹University of Maryland School of Medicine, Baltimore, MD, USA VA RR&D Maryland Exercise and Robotics Center of Excellence, Baltimore, MD, USA lforrester@som.umaryland.edu.

Neurorehabilitation and Neural Repair

|February 12, 2014

Summary

This summary is machine-generated.

This study found that robotic ankle therapy (anklebot) during early stroke recovery improved ankle control and walking symmetry compared to stretching. The anklebot system was well-tolerated by patients, showing promising results for rehabilitation.

Keywords:

ankle motor control ankle robot gait rehabilitation robotics subacute stroke

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Area of Science:

Neurology
Rehabilitation Engineering
Biomechanics

Background:

Modular lower extremity robotics show promise for restoring neuromotor control after hemiparetic stroke.
Previous research indicates ankle robot (anklebot) training enhances paretic ankle motor control and overground walking.

Purpose of the Study:

To evaluate the feasibility and effectiveness of daily anklebot training in patients hospitalized during the early subacute phase after stroke.

Main Methods:

Thirty-four stroke inpatients were randomized to either anklebot training (n=18) or passive manual stretching (n=16).
Anklebot training utilized an "assist-as-needed" protocol for over 200 volitional movements, adapting difficulty to patient ability.
Stretching involved over 200 daily mobilizations within the active range of motion.

Main Results:

The robot group demonstrated greater improvements in temporal symmetry (P=.032) and step length symmetry (P=.038) compared to the stretching group.
Significant enhancements in paretic ankle control were observed in the robot group, including increased peak and mean angular speeds and improved movement smoothness.
No adverse events were reported in either group.

Conclusions:

Modular lower extremity robotics are well-tolerated in early subacute stroke hospitalization.
Anklebot therapy can improve ankle motor control and gait patterns in stroke survivors.
Findings suggest potential for robotic systems in stroke rehabilitation, despite limitations of small sample size and entry criteria.