Surface Strain Variation in Human Patellar Tendon and Knee Cruciate Ligaments

Abstract

Local surface strains in bone-fascicle-bone subunits from human patellar tendon and anterior and posterior cruciate ligaments were measured between markers using low-speed photography during low rate subfailure testing. A simple stress-strain relationship of the power form was found to describe the bone-to-bone responses up to four percent strain for all three tissue types examined. The regional material behavior were best fit using an inverted strain-stress relationship, however. The power model, fitted to the experimental data, conformed to the expected stress-strain relationship better than either the quadratic or cubic models. With few exceptions, for a given stress, the strains near the proximal and distal bone ends were not significantly different from each other, but were significantly higher than the strains in the tissue midregions. Local strain patterns generally varied among subunits from the same tissue.

Department(s)

Mathematics and Statistics

Keywords and Phrases

tendons; knee; bone; biological tissues; stress; stress-strain relations; testing

International Standard Serial Number (ISSN)

0148-0731

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 American Society of Mechanical Engineers (ASME), All rights reserved.

Publication Date

01 Jan 1990

Link to Full Text

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