Document Detail


Contributions of proximal and distal moments to axial tibial rotation during walking and running.
MedLine Citation:
PMID:  10940398     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to determine the cause and effect relationship between tibial internal rotation and pronation of the foot during walking and heel-toe running. This would allow predictions of orthotic effectiveness in reducing knee pain related to excessive internal tibial rotation. Kinematic and force plate data were collected from twenty subjects performing ten running and ten walking trials across a force plate. Using a least-squares algorithm, attitude matrices for each segment in each frame were obtained and the angular velocity vector of the tibia was calculated. The intersegmental moment at the ankle was calculated from ground reaction force and kinematic data, and the power flow from foot to tibia associated with axial tibial rotation was calculated. In walking, all subjects exhibited a clear power flow from tibia to foot during most of the stance phase, indicating that the foot was following the body. This suggests that the use of foot orthoses to reduce knee pain associated with tibial rotation during walking will not be successful. During running, power flow was also mainly proximal to distal, but there were brief periods of opposite power flow. There was more variability between subjects during running, with five subjects having large distal to proximal power flow peaks. These observations may explain and support previous work that has found variable clinical effects of orthoses between patients.
Authors:
T L Bellchamber; A J van den Bogert
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomechanics     Volume:  33     ISSN:  0021-9290     ISO Abbreviation:  J Biomech     Publication Date:  2000 Nov 
Date Detail:
Created Date:  2000-12-11     Completed Date:  2000-12-11     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1397-403     Citation Subset:  IM    
Affiliation:
Human Performance Laboratory, The University of Calgary, Calgary.
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomechanics
Female
Humans
Knee Injuries / physiopathology,  prevention & control
Male
Movement / physiology
Orthotic Devices
Rotation
Running / physiology*
Tibia / physiology*
Torsion Abnormality / physiopathology,  prevention & control
Walking / physiology*

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


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