Document Detail

Kinematic analysis of runners with achilles mid-portion tendinopathy.
MedLine Citation:
PMID:  20003878     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Despite anecdotal evidence linking overpronation to the onset of Achilles tendinopathy (AT), there is little conclusive evidence of a particular movement pattern of the lower extremity associated with this injury. Therefore, the objective of the present study was to observe differences in the kinematic profiles of healthy runners (CON) and runners with mid-portion Achilles tendinopathy (ATG).
MATERIALS AND METHODS: In this cross-sectional analysis, 48 male height and weight matched subjects were invited to participate: 27 with mid-portion Achilles tendon pain and 21 asymptomatic controls. Subjects underwent lower extremity clinical examination, then ran barefoot for 10-trials at a self-selected pace. A 3D motion capture system analysed tri-plane kinematic data for the lower extremity.
RESULTS: The ATG displayed significantly greater sub-talar joint eversion displacement during mid-stance of the running gait (13 +/- 3 degrees vs. 11 +/- 3 degrees; p = 0.04). Trends were observed such that the ATG showed lower peak dorsiflexion velocity (300 +/- 39 degrees/s vs. 330 +/- 59 degrees/s; p = 0.08) and greater overall frontal plane ankle joint range of motion (45 degrees +/- 7 vs. 41 degrees +/- 7; p = 0.09).
CONCLUSION: We found an increase in eversion displacement of the sub-talar joint in runners with Achilles mid-portion tendinopathy. Based on the findings from this study, there is evidence that devices used to control sub-talar eversion may be warranted in patients with Achilles mid-portion tendinopathy who demonstrate over-pronation during mid-stance of the running gait.
Michael Ryan; Stefan Grau; Inga Krauss; Christian Maiwald; Jack Taunton; Thomas Horstmann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Foot & ankle international     Volume:  30     ISSN:  1071-1007     ISO Abbreviation:  Foot Ankle Int     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-12-16     Completed Date:  2010-03-04     Revised Date:  2014-08-27    
Medline Journal Info:
Nlm Unique ID:  9433869     Medline TA:  Foot Ankle Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1190-5     Citation Subset:  IM    
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MeSH Terms
Achilles Tendon / physiopathology*
Ankle Joint / physiopathology
Biomechanical Phenomena
Case-Control Studies
Cross-Sectional Studies
Pronation / physiology
Range of Motion, Articular / physiology
Running / physiology*
Tarsal Joints / physiopathology
Tendinopathy / physiopathology*

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

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