alexa The use of a mechanical model to describe the stiffness and damping characteristics of the knee joint in healthy adults.
Physicaltherapy & Rehabilitation

Physicaltherapy & Rehabilitation

Journal of Sports Medicine & Doping Studies

Author(s): Oatis CA

Abstract Share this page

Abstract BACKGROUND AND PURPOSE: Stiffness is a common clinical complaint but is rarely quantified by clinicians. The purpose of this study was to determine the reliability of a relaxed oscillation test that yields stiffness and damping coefficients of the knee. These coefficients describe the knee joint's resistance to bending and the time-dependent nature of that resistance. SUBJECTS AND METHODS: Effects of age, gender, and knee position on these coefficients were assessed in 96 healthy volunteers aged 20 to 79 years. Measures were based on the premise that the knee joint can be modeled as a damped spring. Oscillations of the knee were recorded using an electrogoniometer with the knee oscillating through about 45 and 75 degrees of knee flexion. RESULTS: Intraclass correlation coefficients revealed moderate to high reliability in the measurements taken three times in the same test session and on three separate days. Analysis of variance showed significant increases in stiffness and damping coefficients in the male subjects as compared with the female subjects. Analysis of variance also suggested an age effect on stiffness coefficients at the 75-degree test position, with decreasing stiffness with age. Both stiffness and damping coefficients were significantly smaller when measured at the 75-degree test position compared with the 45-degree position (Student's t test). CONCLUSION AND DISCUSSION: These results demonstrate a reliable method of measuring knee joint stiffness, and they correlate well with known morphological differences related to age and gender. This measure may prove to be more useful in evaluating the function of the knee than more commonly used assessments. It may also lead to a better understanding of how the knee functions in such activities as locomotion.
This article was published in Phys Ther and referenced in Journal of Sports Medicine & Doping Studies

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords