Document Detail

Automating arm movement training following severe stroke: functional exercises with quantitative feedback in a gravity-reduced environment.
MedLine Citation:
PMID:  17009498     Owner:  NLM     Status:  MEDLINE    
An important goal in rehabilitation engineering is to develop technology that allows individuals with severe motor impairment to practice arm movement without continuous supervision from a rehabilitation therapist. This paper describes the development of such a system, called Therapy WREX or ("T-WREX"). The system consists of an orthosis that assists in arm movement across a large workspace, a grip sensor that detects hand grip pressure, and software that simulates functional activities. The arm orthosis is an instrumented, adult-sized version of the Wilmington Robotic Exoskeleton (WREX), which is a five degrees-of-freedom mechanism that passively counterbalances the weight of the arm using elastic bands. After providing a detailed design description of T-WREX, this paper describes two pilot studies of the system's capabilities. The first study demonstrated that individuals with chronic stroke whose arm function is compromised in a normal gravity environment can perform reaching and drawing movements while using T-WREX. The second study demonstrated that exercising the affected arm of five people with chronic stroke with T-WREX over an eight week period improved unassisted movement ability (mean change in Fugl-Meyer score was 5 points +/- 2 SD; mean change in range of motion of reaching was 10%, p < 0.001). These results demonstrate the feasibility of automating upper-extremity rehabilitation therapy for people with severe stroke using passive gravity assistance, a grip sensor, and simple virtual reality software.
Robert J Sanchez; Jiayin Liu; Sandhya Rao; Punit Shah; Robert Smith; Tariq Rahman; Steven C Cramer; James E Bobrow; David J Reinkensmeyer
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society     Volume:  14     ISSN:  1534-4320     ISO Abbreviation:  IEEE Trans Neural Syst Rehabil Eng     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-10-02     Completed Date:  2006-10-25     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  101097023     Medline TA:  IEEE Trans Neural Syst Rehabil Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  378-89     Citation Subset:  IM    
Department of Mechanical and Aerospace Engienering, University of California, Irvine, CA 92697-3975, USA.
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MeSH Terms
Arm / physiopathology
Biofeedback, Psychology / methods*
Exercise Therapy / instrumentation*,  methods
Middle Aged
Motion Therapy, Continuous Passive / instrumentation*,  methods
Paresis / etiology,  physiopathology,  rehabilitation*
Physical Stimulation / instrumentation,  methods
Robotics / instrumentation*,  methods
Stroke / complications,  physiopathology,  rehabilitation*
Telemedicine / instrumentation*,  methods
Therapy, Computer-Assisted / instrumentation,  methods
User-Computer Interface
Weightlessness Simulation
Grant Support
M01 RR000827-29/RR/NCRR NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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