Bone and Joint Institute

Title

Analysis of 3D strain in the human medial meniscus

Document Type

Article

Publication Date

10-1-2016

Journal

Journal of the Mechanical Behavior of Biomedical Materials

Volume

63

First Page

470

Last Page

475

URL with Digital Object Identifier

10.1016/j.jmbbm.2016.06.001

Abstract

© 2016 Elsevier Ltd This study presents a method to evaluate three-dimensional strain in meniscal tissue using medical imaging. Strain is calculated by tracking small teflon markers implanted within the meniscal tissue using computed tomography imaging. The results are presented for strains in the middle and posterior third of the medial menisci of 10 human cadaveric knees, under simulated physiologically relevant loading. In the middle position, an average compressive strain of 3.4% was found in the medial–lateral direction, and average tensile strains of 1.4% and 3.5% were found in the anterior–posterior and superior–inferior directions respectively at 5° of knee flexion with an applied load of 1× body weight. In the posterior position, under the same conditions, average compressive strains of 2.2% and 6.3% were found in the medial–lateral and superior–inferior directions respectively, and an average tensile strain of 3.8% was found in the anterior–posterior direction. No statistically significant difference between strain in the middle or posterior of the meniscus or between the global strains is uncovered.

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