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Running-in friction of hip joint replacements can be significantly reduced:The effect of surface-textured acetabular cup

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Friction 2020年第6期8卷 1137-1152页

作者： David NECAS Hatsuhiko USAMI tatsuya niimi Yoshinori SAWAE Ivan KRUPKA Martin HARTL Faculty of Mechanical Engineering Brno University of TechnologyBrno 61669Czech Republic Faculty of Science and Technology Meijo UniversityNagoya 468-8502Japan Kanefusa Corporation Nagoya 480-0192Japan Faculty of Engineering Kyushu UniversityFukuoka 819-0395Japan

Hip joint replacements represent the most effective way of treatment for patients suffering from joint *** the rapid improvement of implant materials over the last few decades,limited longevity associated with wear-related complications persists as the main ***,improved tribological perfor-mance is required in order to extend the service life of *** effect of surface texturing of ultra-high molecular weight polyethylene(UHMWPE)acetabular cup was investigated in the present *** tilling method was utilized for manufacturing the dimples with controlled diameter and depths on the contact surface of the *** experiments with four commercial femoral components and two model lubricants were *** main attention was paid to a coefficient of friction considering the differences between the original and the dimpled *** showed remarkable lowering of friction,in *** on the simulated human synovial fluid,friction was reduced by 40%(alumina ceramic),38.8%(zirconia toughened ceramic),25.5%(metal),and 9.9%(oxinium).In addition,the dimples helped to keep the friction stable without *** conclude,the paper brings a new insight into frictional behaviour of the hip replacements during running-in phase which is essential for overall implant *** is believed that proper surface texturing may rapidly improve the life quality of millions of patients and may lead to considerable financial savings.

关键词： hip joint replacement friction texturing dimple longevity

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