Document Detail


Foot type biomechanics part 1: structure and function of the asymptomatic foot.
MedLine Citation:
PMID:  23107625     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Differences in foot structure are thought to be associated with differences in foot function during movement. Many foot pathologies are of a biomechanical nature and often associated with foot type. Fundamental to the understanding of foot pathomechanics is the question: do different foot types have distinctly different structure and function?
AIM: To determine if objective measures of foot structure and function differ between planus, rectus and cavus foot types in asymptomatic individuals.
METHODS: Sixty-one asymptomatic healthy adults between 18 and 77 years old, that had the same foot type bilaterally (44 planus feet, 54 rectus feet, and 24 cavus feet), were recruited. Structural and functional measurements were taken using custom equipment, an emed-x plantar pressure measuring device, a GaitMat II gait pattern measurement system, and a goniometer. Generalized Estimation Equation modeling was employed to determine if each dependent variable of foot structure and function was significantly different across foot type while accounting for potential dependencies between sides. Post hoc testing was performed to assess pair wise comparisons.
RESULTS: Several measures of foot structure (malleolar valgus index and arch height index) were significantly different between foot types. Gait pattern parameters were invariant across foot types. Peak pressure, maximum force, pressure-time-integral, force-time-integral and contact area were significantly different in several medial forefoot and arch locations between foot types. Planus feet exhibited significantly different center of pressure excursion indices compared to rectus and cavus feet.
CONCLUSIONS: Planus, rectus and cavus feet exhibited significantly different measures of foot structure and function.
Authors:
Howard J Hillstrom; Jinsup Song; Andrew P Kraszewski; Jocelyn F Hafer; Rajshree Mootanah; Alyssa B Dufour; Betty Shingpui Chow; Jonathan T Deland
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-10-26
Journal Detail:
Title:  Gait & posture     Volume:  37     ISSN:  1879-2219     ISO Abbreviation:  Gait Posture     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-03-07     Completed Date:  2013-08-20     Revised Date:  2014-03-09    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  England    
Other Details:
Languages:  eng     Pagination:  445-51     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Ankle Joint / anatomy & histology,  physiology
Biomechanical Phenomena
Female
Foot / anatomy & histology,  physiology*
Foot Deformities / physiopathology*
Gait / physiology*
Humans
Male
Middle Aged
Pressure
Pronation / physiology
Supination / physiology
Weight-Bearing / physiology
Young Adult
Grant Support
ID/Acronym/Agency:
1R03HD053135-01/HD/NICHD NIH HHS; R01 AR047853/AR/NIAMS NIH HHS; R01AR047853-10/AR/NIAMS NIH HHS; R03 HD053135/HD/NICHD NIH HHS
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