Document Detail


Efficacy of an ankle brace with a subtalar locking system in inversion control in dynamic movements.
MedLine Citation:
PMID:  20026883     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
STUDY DESIGN: Controlled laboratory study. OBJECTIVES: To examine effectiveness of an ankle brace with a subtalar locking system in restricting ankle inversion during passive and dynamic movements. BACKGROUND: Semirigid ankle braces are considered more effective in restricting ankle inversion than other types of brace, but a semirigid brace with a subtalar locking system may be even more effective. METHODS: Nineteen healthy subjects with no history of major lower extremity injuries were included in the study. Participants performed 5 trials of an ankle inversion drop test and a lateral-cutting movement without wearing a brace and while wearing either the Element (with the subtalar locking system), a Functional ankle brace, or an ASO ankle brace. A 2-way repeated-measures analysis of variance (ANOVA) was used to assess brace differences (P?.05). RESULTS: All 3 braces significantly reduced total passive ankle frontal plane range of motion (ROM), with the Element ankle brace being the most effective. For the inversion drop the results showed significant reductions in peak ankle inversion angle and inversion ROM for all 3 braces compared to the no brace condition; and the peak inversion velocity was also reduced for the Element brace and the Functional brace. In the lateral-cutting movement, a small but significant reduction of the peak inversion angle in early foot contact and the peak eversion velocity at push-off were seen when wearing the Element and the Functional ankle braces compared to the no brace condition. Peak vertical ground reaction force was reduced for the Element brace compared to the ASO brace and the no brace conditions. CONCLUSIONS: These results suggest that the tested ankle braces, especially the Element brace, provided effective restriction of ankle inversion during both passive and dynamic movements.
Authors:
Songning Zhang; Michael Wortley; Qingjian Chen; Julia Freedman
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Publication Detail:
Type:  Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of orthopaedic and sports physical therapy     Volume:  39     ISSN:  0190-6011     ISO Abbreviation:  J Orthop Sports Phys Ther     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-12-22     Completed Date:  2010-03-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7908150     Medline TA:  J Orthop Sports Phys Ther     Country:  United States    
Other Details:
Languages:  eng     Pagination:  875-83     Citation Subset:  IM    
Affiliation:
Department of Excercise, Sport and Leisure Studies, The University of Tennessee, Knoxville, 37996, USA. szhang@utk.edu
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MeSH Terms
Descriptor/Qualifier:
Adult
Ankle Joint / physiopathology*
Braces*
Equipment Design
Female
Humans
Joint Instability / physiopathology*,  therapy*
Male
Range of Motion, Articular*
Young Adult

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


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