Document Detail


Biomechanical analysis of legrest support of occupied wheelchairs: comparison between a conventional and a compensatory legrest.
MedLine Citation:
PMID:  10779117     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was undertaken to investigate the effects of elevating legrest on posture and pressure distribution in a group of ten able-bodied subjects sitting in a manual wheelchair. Two types of legrest were tested: a conventional elevating legrest with a fixed axis of rotation, and a compensatory elevating legrest with a moving axis of rotation. A three-dimensional (3-D) kinematics analysis was carried out to assess body posture simultaneously with pressure measurement data collected at the back, seat, calf and foot supports. The compensatory legrest enables to lengthen foot support as the legrest proclines. This compensation at the knee joint level has a beneficial effect in minimizing pelvic and thigh motion as well as in reducing pressure distribution under seat and foot supports. In contrast, the use of a conventional legrest modifies significantly the subject's posture and induces a substantial increase of 40% on pressure data under ischial tuberosities in procline position. These findings are important for disabled and elderly people who need to elevate their lower leg frequently.
Authors:
R Aissaoui; S Heydar; J Dansereau; M Lacoste
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society     Volume:  8     ISSN:  1063-6528     ISO Abbreviation:  IEEE Trans Rehabil Eng     Publication Date:  2000 Mar 
Date Detail:
Created Date:  2000-06-08     Completed Date:  2000-06-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9413994     Medline TA:  IEEE Trans Rehabil Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  140-8     Citation Subset:  IM    
Affiliation:
Département de génie mécanique, Chaire Industrielle CRSNG sur les aides techniques à la posture, Ecole Polytechnique de Montréal, PQ, Canada. Rachid.Aissaoui@meca.polymtl.ca
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Adult
Biomechanics
Computer Simulation*
Equipment Design
Human Engineering*
Humans
Leg*
Posture*
Pressure
Risk Factors
Rotation
Signal Processing, Computer-Assisted*
Wheelchairs / standards*

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


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