Wear Test Apparatus for Friction and Wear Evaluation Hip Prostheses
نویسندگان
چکیده
منابع مشابه
Femoral component wear in retrieved hip prostheses.
We retrieved 159 femoral heads at revision surgery to determine changes in surface configuration. Macroscopic wear of the head was observed in three bipolar hip prostheses as a result of three-body wear. There was a considerable change in surface roughness in the internal articulation of bipolar hip prostheses. Roughness in alumina heads was almost the same as that in new cobalt-chromium heads....
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A torque measurement system was added to a widely used hip wear simulator, the biaxial rocking motion device. With the rotary transducer, the frictional torque about the drive axis of the biaxial rocking motion mechanism was measured. The principle of measuring the torque about the vertical axis above the prosthetic joint, used earlier in commercial biaxial rocking motion simulators, was shown ...
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A new wear testing system, which carries out toothbrush wear and simulated occlusal wear tests alternately, was developed. Differences in wear behavior among three modes of wears, combined wear, toothbrush wear and simulated occlusal wear, were investigated using polymethylmethacrylate (PMMA) and two commercial resin composites (Z100, APX). The area of the material loss after each test was meas...
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Friction and wear are part and parcel of all walks of life, and for interfaces that are in close or near contact, tribology and mechanics are supremely important. They can critically influence the efficient functioning of devices and components. Nanoscale friction force follows a complex nonlinear dependence on multiple, often interdependent, interfacial and material properties. Various studies...
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INTRODUCTION Although total elbow arthroplasty (TEA) is a clinically successful procedure, long-term complications due to bushing wear and osteolysis are a few of the reasons for limited long-term survivorship.[Goldberg, 2008] There is no published information on in vitro wear simulations of total elbow prostheses to characterize and predict in vivo performance nor are there any currently accep...
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ژورنال
عنوان ژورنال: Frontiers in Mechanical Engineering
سال: 2019
ISSN: 2297-3079
DOI: 10.3389/fmech.2019.00012