Development of lubrication film and influence on friction in a total knee replacement during a gait cycle

被引：2
作者：
Odehnal, Lukas [1 ]
Ranusa, Matus [1 ]
Wimmer, Markus A. [2 ]
Vrbka, Martin [1 ]
Krupka, Ivan [1 ]
机构：
[1] Brno Univ Technol, Fac Mech Engn, Dept Tribol, Tech 2896-2, Brno 61669, Czech Republic
[2] Rush Univ, Coll Med, Med Ctr, Dept Orthoped Surg, Chicago, IL 60612 USA
来源：
TRIBOLOGY INTERNATIONAL | 2023年 / 178卷
关键词：
Total knee replacement; Friction coefficient; Lubrication film development; Fluorescent microscopy; MOLECULAR-WEIGHT POLYETHYLENE; WEAR; PROTEINS; HIP; COEFFICIENT; ADSORPTION; BEHAVIOR; FLUID;
D O I：
10.1016/j.triboint.2022.108073
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The presented study dealt with the experimental analysis of friction and lubrication mechanism observed with fluorescent microscopy in total knee replacement represented by CoCrMo wheel and PMMA plate. Model synovial fluid with marked constituents was used as test lubricant. The experiments investigated three main parameters. Slide-roll-ratio (SRR) showed the greatest influence on lubrication film formation. Friction coefficient was mostly influenced by axial load; its increase led to a decrease in friction. Relative speed was manifested for SRR 1.25 and higher where its increase caused a decrease in friction. The complex experiment showed a development of friction coefficient and lubrication film along the whole gait cycle. The results of this experiment correspond with the initial results concerning the influences of parameters.
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页数：9
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