Bone and Joint Institute
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.
