Abstract
A concept of creation of a polymeric insert for hip joint endoprostheses with the physiological and biomechanical properties typical of natural cartilage is proposed. The spherical friction surface of the insert is coated with a microporous layer imitating cartilage. This layer carries an electret charge, which improves the lubrication of the endoprosthesis with synovia and serves as a carrier of drugs, thus ensuring their prolonged discharge into the operation wound. Tribotechnical characteristics of an endoprosthesis with such an insert are investigated. It is shown that a drop in the friction coefficient of such a pair is accompanied by a change in the microrelief of the friction surface and in the degree of crystallinity of the material of the porous layer.
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Tsvetkova, E.A., Kadolich, Z.V., Goldade, V.A. et al. Structural Changes in the Surface Friction Layer of a Polymeric Endoprosthesis Cup. Mechanics of Composite Materials 36, 365–372 (2000). https://doi.org/10.1023/A:1026690932391
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DOI: https://doi.org/10.1023/A:1026690932391