Document Detail


Neuromuscular dynamic restraint in women with anterior cruciate ligament injuries.
MedLine Citation:
PMID:  15292807     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to identify neuromuscular characteristics related to dynamic restraint in the knee. Observing compensatory changes to these characteristics in women with anterior cruciate ligament injuries provides important information for understanding functional knee stability, injury prevention, and performance. Twelve female subjects with anterior cruciate ligament injuries and 17 female control subjects participated in this study to assess electromyographic activity during landing from a hop and knee perturbation; hamstring muscle stiffness and flexibility; and isokinetic strength. Females with anterior cruciate ligament deficiencies had significantly increased preparatory muscle activity in the lateral hamstring before landing, but no differences in reactive muscle activity during landing or reflex latency after joint perturbation. Females with anterior cruciate ligament deficiencies had significantly less hamstring muscle stiffness and flexibility, but also had greater peak torque and torque development for knee flexion. Lower Lysholm scores were observed in females with anterior cruciate ligament deficiencies but no difference was found in functional performance of the single leg hop test. These neuromuscular characteristics provide a foundation for future research investigating injury prevention and rehabilitation techniques that maximize dynamic restraint through stiffness regulation and the timing of specific muscle activation strategies.
Authors:
Charles Buz Swanik; Scott M Lephart; Kathleen A Swanik; David A Stone; Freddie H Fu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  -     ISSN:  0009-921X     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-08-04     Completed Date:  2004-09-16     Revised Date:  2005-03-03    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  189-99     Citation Subset:  AIM; IM    
Affiliation:
Department of Kinesiology, Temple University, 127 Pearson Hall, Philadelphia, PA 19122, USA. cswanik@temple.edu
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MeSH Terms
Descriptor/Qualifier:
Adult
Anterior Cruciate Ligament / injuries*,  physiopathology*
Biomechanics
Case-Control Studies
Electromyography
Female
Humans
Knee Joint / physiopathology*
Muscle, Skeletal / physiology*
Questionnaires
Range of Motion, Articular
Regression Analysis

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


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