Document Detail

Evaluating the Coupling Between Foot Pronation and Tibial Internal Rotation Continuously Using Vector Coding.
MedLine Citation:
PMID:  25386828     Owner:  NLM     Status:  Publisher    
Excessive pronation, because of its coupling with tibial internal rotation (TIR), has been implicated as a risk factor in the development of anterior knee pain (AKP). Traditionally this coupling has been expressed as a ratio between the eversion range of motion and the TIR range of motion (Ev/TIR) that occurs during stance. Currently, this technique has not been used to evaluate specific injuries or the effects of gender. Additionally, Ev/TIR is incapable of detecting coupling changes that occur throughout stance. Therefore, the purpose of this study was to compare the coupling between eversion and TIR in runners with (n = 19) and without AKP (n = 17) and across gender using the Ev/TIR ratio, and more continuously using vector coding. When using vector coding, significant coupling differences were noted in runners with AKP (34-38% stance), with runners with AKP showing relatively more TIR than eversion. Similarly significant differences were noted across gender (14-25 & 36-47% stance) with males transitioning from a loading to propulsive coordination pattern using a proximal to distal strategy, while female runners used a distal to proximal strategy. These differences were only detected when evaluating this coupling relationship using a continuous technique such as vector coding.
Pedro Rodrigues; Ryan Chang; Trampas TenBroek; Richard van Emmerik; Joseph Hamill
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-11
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  -     ISSN:  1065-8483     ISO Abbreviation:  J Appl Biomech     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-11     Completed Date:  -     Revised Date:  2014-11-12    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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