Authors: K.Kh. Rakhimyanov, RakhimyanovA.Kh., Veselov , I.A. Leontyev

Title of the article: Device for the assessment of tribological properties of the knee joint endoprosthesis materials

Year: 2018, Issue: 4, Pages: 16-22

Branch of knowledge: Mechanical engineering and machine science

Index UDK: 621.9.06

DOI: 10.26730/1999-4125-2018-4-16-22

Abstract: The modern development of endoprosthetics along with the improvement of the surgical technique is aimed at creating new designs of endoprostheses and at the same time searching for perspective materials. First of all, it concerns the materials of the articular surfaces of the endoprosthesis, which must have a high wear resistance during its operation. A quantitative assessment of the tribological characteristics of the materials is necessary to select the most effective pair for articular surfaces at the stage of endoprosthesis models designing. To solve this problem, it is necessary to create specialized equipment designed for the study of wear processes of contacting materials in conditions close to the operation of a real endoprosthesis. This paper discusses the device for assessing the tribological properties of the articular surface materials of the knee joint endoprosthesis. This design makes it possible to test the material samples imitating the articular surfaces of the femoral and tibial components of the endoprosthesis, with adjustable swing speed and force loading. The ability to register the torque by using a sensor allows us to calculate the friction coefficient during the test. Weight control of the contacting pair samples is intended to quantify wear at a certain stage of testing. The use of loading force sensors, swing angle sensors and torque sensors with data output to a computer allows us to record the process parameters in any relative positions of the components of the endoprosthesis.

Key words: endoprosthesis knee joint wear device femoral component tibial component ceramics

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