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Article

Establishment of a Rolling-Sliding Test Bench to Analyze Abrasive Wear Propagation of Different Bearing Materials for Knee Implants

1
Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, University Medicine Rostock, Doberaner Str. 142, 18057 Rostock, Germany
2
Visual and Data-Centric Computing, Zuse Institute Berlin, Takustraße 7, 14195 Berlin, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Frank Seehaus
Appl. Sci. 2021, 11(4), 1886; https://doi.org/10.3390/app11041886
Received: 3 February 2021 / Revised: 17 February 2021 / Accepted: 18 February 2021 / Published: 21 February 2021
Currently, new materials for knee implants need to be extensively tested but such tests are expensive in a knee wear simulator in a realized design. However, using a rolling-sliding test bench, these materials can be examined under the same test conditions, but with simplified geometries. In the present study, the test bench was optimized, and forces were adapted to the physiological contact pressure in the knee joint using the available geometric parameters. Various polymers made of polyethylene and polyurethane, articulating against test wheels made of cobalt-chromium and aluminum titanate, were tested in the test bench using adapted forces based on ISO 14243–1. Polyurethane materials showed distinctly higher wear rates than polyethylene materials and showed inadequate wear resistance for use as knee implant material. Thus, the rolling-sliding test bench is an adaptable test setup to evaluate newly developed bearing materials for knee implants. It combines the advantages of screening and simulator tests and allows for the testing of various bearing materials under physiological load and tribological conditions of the human knee joint. The wear behavior of different material compositions and the influence of surface geometry and quality can be initially investigated without the need to produce complex implant prototypes of total knee endoprosthesis or interpositional spacers. View Full-Text
Keywords: knee joint kinematics; wear bearing; rolling-sliding mechanism; test bench knee joint kinematics; wear bearing; rolling-sliding mechanism; test bench
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MDPI and ACS Style

Hembus, J.; Ambellan, F.; Zachow, S.; Bader, R. Establishment of a Rolling-Sliding Test Bench to Analyze Abrasive Wear Propagation of Different Bearing Materials for Knee Implants. Appl. Sci. 2021, 11, 1886. https://doi.org/10.3390/app11041886

AMA Style

Hembus J, Ambellan F, Zachow S, Bader R. Establishment of a Rolling-Sliding Test Bench to Analyze Abrasive Wear Propagation of Different Bearing Materials for Knee Implants. Applied Sciences. 2021; 11(4):1886. https://doi.org/10.3390/app11041886

Chicago/Turabian Style

Hembus, Jessica, Felix Ambellan, Stefan Zachow, and Rainer Bader. 2021. "Establishment of a Rolling-Sliding Test Bench to Analyze Abrasive Wear Propagation of Different Bearing Materials for Knee Implants" Applied Sciences 11, no. 4: 1886. https://doi.org/10.3390/app11041886

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