Document Detail


Knee flexion during stance as a determinant of inefficient walking.
MedLine Citation:
PMID:  6828560     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A biomechanical analysis of normal walking assessed the mechanical work cost in joules per unit mass and distance walked. For 21 walking trials--seven subjects at slow, natural, and fast cadences--these work costs (min = .73 J/kg.m, max = 1.65 J/kg.m) were correlated with maximum knee flexion during stance (min=6 degrees, max=33 degrees). The results were contrary to the predictions of previous researchers who claimed that the energy cost would increase as the knee became more rigid during stance. This study showed a significant positive correlation between work cost and maximum knee flexion. The implications of these findings and the predicted increase of bone-on-bone forces as knee flexion increases are discussed relative to the gait training of certain patient populations.
Authors:
D A Winter
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physical therapy     Volume:  63     ISSN:  0031-9023     ISO Abbreviation:  Phys Ther     Publication Date:  1983 Mar 
Date Detail:
Created Date:  1983-04-21     Completed Date:  1983-04-21     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0022623     Medline TA:  Phys Ther     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  331-3     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomechanics
Energy Metabolism
Female
Gait*
Humans
Knee / physiology*
Locomotion
Male
Movement

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