Document Detail

The effect of foot structure on 1st metatarsophalangeal joint flexibility and hallucal loading.
MedLine Citation:
PMID:  21536440     Owner:  NLM     Status:  MEDLINE    
The purpose of our study was to examine 1st metatarsophalangeal (MTP) joint motion and flexibility and plantar loads in individuals with high, normal and low arch foot structures. Asymptomatic individuals (n=61), with high, normal and low arches participated in this study. Foot structure was quantified using malleolar valgus index (MVI) and arch height index (AHI). First MTP joint flexibility was measured using a specially constructed jig. Peak pressure under the hallux, 1st and 2nd metatarsals during walking was assessed using a pedobarograph. A one-way ANOVA with Bonferroni-adjusted post hoc comparisons was used to assess between-group differences in MVI, AHI, early and late 1st MTP joint flexibility in sitting and standing, peak dorsiflexion (DF), and peak pressure under the hallux, 1st and 2nd metatarsals. Stepwise linear regression was used to identify predictors of hallucal loading. Significant between-group differences were found in MVI (F(2,56)=15.4, p<0.01), 1st MTP late flexibility in sitting (F(2,57)=3.7, p=0.03), and standing (F(2,57)=3.7, p=0.03). Post hoc comparisons demonstrated that 1st MTP late flexibility in sitting was significantly higher in individuals with low arch compared to high arch structure, and that 1st MTP late flexibility in standing was significantly higher in individuals with low arch compared to normal arch structure. Stepwise regression analysis indicated that MVI and 1st MTP joint early flexibility in sitting explain about 20% of the variance in hallucal peak pressure. Our results provide objective evidence indicating that individuals with low arches show increased 1st MTP joint late flexibility compared to individuals with normal arch structure, and that hindfoot alignment and 1st MTP joint flexibility affect hallucal loading.
Smita Rao; Jinsup Song; Andrew Kraszewski; Sherry Backus; Scott J Ellis; Jonathan T Deland; Howard J Hillstrom
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-05-01
Journal Detail:
Title:  Gait & posture     Volume:  34     ISSN:  1879-2219     ISO Abbreviation:  Gait Posture     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-05-30     Completed Date:  2011-10-24     Revised Date:  2014-09-21    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  England    
Other Details:
Languages:  eng     Pagination:  131-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier B.V. All rights reserved.
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MeSH Terms
Analysis of Variance
Biomechanical Phenomena
Foot / anatomy & histology*,  physiology*
Metatarsophalangeal Joint / physiology*
Range of Motion, Articular / physiology*
Regression Analysis
Grant Support
1R03HD053135-01/HD/NICHD NIH HHS; R03 HD053135/HD/NICHD NIH HHS; R03 HD053135-01/HD/NICHD NIH HHS; R03 HD053135-02/HD/NICHD NIH HHS

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