caa a22 4500 605458669 CHVBK 20210128100230.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00167-014-2926-4 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2926-4 Fibrous cartilage of human menisci is less shock-absorbing and energy-dissipating than hyaline cartilage [Elektronische Daten] [Mario Gaugler, Dieter Wirz, Sarah Ronken, Mirjam Hafner, Beat Göpfert, Niklaus Friederich, Reinhard Elke] Purpose: 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. Methods: 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. Results: The resultant E* at fast indentation (median 1.16MPa) was significantly higher, and the loss angle was significantly lower (median 10.2°) compared to slow-loading mode's E* and δ (median 0.18MPa 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. Conclusion: 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. Springer-Verlag Berlin Heidelberg, 2014 Meniscus cartilage nationallicence Fibrocartilage nationallicence Hyaline cartilage nationallicence Mechanical properties nationallicence In vitro study nationallicence Gaugler Mario Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Wirz Dieter Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Ronken Sarah Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Hafner Mirjam Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Göpfert Beat Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Friederich Niklaus Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut Elke Reinhard Orthomerian, Gotthelfstrasse 105, 4054, Basel, Switzerland aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1141-1146 0942-2056 23:4<1141 2015 23 167 https://doi.org/10.1007/s00167-014-2926-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-2926-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gaugler Mario Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Wirz Dieter Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Ronken Sarah Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Hafner Mirjam Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Göpfert Beat Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Friederich Niklaus Center of Biomechanics and Calorimetry Basel, University of Basel, Klingelbergstrasse 50-70, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Elke Reinhard Orthomerian, Gotthelfstrasse 105, 4054, Basel, Switzerland aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1141-1146 0942-2056 23:4<1141 2015 23 167