Fibrous cartilage of human menisci is less shock-absorbing and energy-dissipating than hyaline cartilage

Gaugler, Mario and Wirz, Dieter and Ronken, Sarah and Hafner, Mirjam and Göpfert, Beat and Friederich, Niklaus F. and Elke, Reinhard. (2015) Fibrous cartilage of human menisci is less shock-absorbing and energy-dissipating than hyaline cartilage. Knee surgery, sports traumatology, arthroscopy, Vol. 23, H. 4. pp. 1141-1146.

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Official URL: http://edoc.unibas.ch/dok/A6348607

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To test meniscal mechanical properties such as the dynamic modulus of elasticity E* and the loss angle δ at two loading frequencies ω at different locations of the menisci and compare it to E* and δ of hyaline cartilage in indentation mode with spherical indenters.; On nine pairs of human menisci, the dynamic E*-modulus and loss angle δ (as a measure of the energy dissipation) were determined. The measurements were performed at two different strain rates (slow sinusoidal and fast single impact) to show the strain rate dependence of the material. The measurements were compared to previous similar measurements with the same equipment on human hyaline cartilage.; The resultant E* at fast indentation (median 1.16 MPa) was significantly higher, and the loss angle was significantly lower (median 10.2°) compared to slow-loading mode's E* and δ (median 0.18 MPa and 16.9°, respectively). Further, significant differences for different locations are shown. On the medial meniscus, the anterior horn shows the highest resultant dynamic modulus.; In dynamic measurements with a spherical indenter, the menisci are much softer and less energy-dissipating than hyaline cartilage. Further, the menisci are stiffer and less energy-dissipating in the middle, intermediate part compared to the meniscal base. In compression, the energy dissipation of meniscus cartilage plays a minor role compared to hyaline cartilage. At high impacts, energy dissipation is less than on low impacts, similar to cartilage.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedical Engineering
03 Faculty of Medicine
UniBasel Contributors:Göpfert, Beat and Wirz, Dieter and Friederich, Niklaus F. and Elke, Reinhard P.E.
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Jun 2018 14:07
Deposited On:08 May 2015 08:45

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