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Related Experiment Video

Updated: Jun 25, 2026

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

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Published on: October 11, 2024

Active range of motion predicts upper extremity function 3 months after stroke.

Justin A Beebe¹, Catherine E Lang

¹Washington University, St Louis, MO 63108, USA.

|March 7, 2009

Summary

Early active range of motion (AROM) measurements of the upper extremity after stroke can predict functional recovery. This helps determine prognosis and guide rehabilitation for stroke survivors.

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Last Updated: Jun 25, 2026

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

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

Published on: October 11, 2024

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Kinematic Analysis Using 3D Motion Capture of Drinking Task in People With and Without Upper-extremity Impairments

Kinematic Analysis Using 3D Motion Capture of Drinking Task in People With and Without Upper-extremity Impairments

Published on: March 28, 2018

Area of Science:

Neurorehabilitation
Biomedical engineering
Clinical neurology

Background:

Stroke frequently causes upper extremity paresis, impacting 80% of patients.
Full functional recovery is achieved by only about one-third of stroke survivors.
Accurate prediction of recovery is crucial for effective, cost-efficient rehabilitation.

Purpose of the Study:

To determine if early active range of motion (AROM) measurements predict upper extremity function recovery post-stroke.
To characterize the recovery trajectory of upper extremity AROM over time.

Main Methods:

Thirty-three stroke subjects were assessed at 1 and 3 months post-stroke.
Upper extremity function was quantified using 6 clinical tests, synthesized into a single score via principal component analysis.
A 3D electromagnetic tracking system measured segment-specific AROM.

Main Results:

AROM of the shoulder and middle finger at 1 month predicted 71% of the variance in upper extremity function at 3 months.
All upper extremity segments demonstrated similar recovery patterns.
No proximal-to-distal gradient in motor deficit recovery was observed.

Conclusions:

Early AROM measurements (within 1 month post-stroke) are effective predictors of 3-month upper extremity function.
This predictive capability is vital for establishing patient prognosis and informing rehabilitation strategies.