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The Effects of Prophylactic Brace Construction Materials on the Reactive Responses of the MCL During Repetitive Impacts.
MedLine Citation:
PMID:  16558419     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: The purpose of the present study was to investigate the effect of different construction materials on the ability of a prophylactic brace to reduce the stresses sustained by a surrogate medial collateral ligament (MCL) under low-energy repetitive impact conditions. DESIGN AND SETTING: A surrogate leg was fixed at both the hip and foot with the knee in full extension. A prophylactic brace was attached to the surrogate leg and the system struck by an impactor weighing either 6.68 kg or 16.9 kg. SUBJECTS: A single brace design (Am Pro Knee Guard) was used. Three different materials (nylon, aluminum, graphite) were used in constructing the brace uprights. MEASUREMENTS: Tension in the MCL was measured under all conditions of brace material and impactor weight. In addition, the impact impulse response of the system was evaluated. RESULTS: The graphite and aluminum uprights showed significant reductions in both MCL peak tension magnitude (from 12 to 21% improvement) and in the impulse response of the MCL (from 36 to 47% improvement) when compared to the no-brace condition. CONCLUSIONS: The present study indicates that the choice of brace upright material does have a significant effect on the transmission and absorption of low-level repetitive impact forces at the MCL and should be an important consideration in the design of better knee braces.
Authors:
P E Patterson; J Eason
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of athletic training     Volume:  31     ISSN:  1062-6050     ISO Abbreviation:  J Athl Train     Publication Date:  1996 Oct 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-06-29     Revised Date:  2010-09-15    
Medline Journal Info:
Nlm Unique ID:  9301647     Medline TA:  J Athl Train     Country:  United States    
Other Details:
Languages:  eng     Pagination:  329-33     Citation Subset:  -    
Affiliation:
Patrick E. Patterson is Associate Professor at Department of Industrial and Manufacturing Systems Engineering and the Biomedical Engineering Program, Iowa State University, Ames, IA 50011.
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