Synovial fluid lubrication of artificial joints: protein film formation and composition

2012 ◽  
Vol 156 ◽  
pp. 69 ◽  
Author(s):  
Jingyun Fan ◽  
Connor Myant ◽  
Richard Underwood ◽  
Philippa Cann
Author(s):  
N S Gavrjushenko

This paper gives a short description of the lubricating properties of yellow and red bone marrow taken from a femur of a cadaver. The experiments have been conducted on a ‘ball-on-plate’ model. The balls were made from steel 100 CR6 (German) and the plates were made from the same steel and ultra-high molecular weight polyethylene (UHMWPE, German ‘Herulen’). The friction coefficients under loads of 50 and 300 N were determined with different combinations of friction components. It has been found that the lubricating properties of yellow and red marrow have advantages over synovial fluid. In the light of these results the author develops a new approach to the design of a new hip endoprosthesis.


2017 ◽  
Vol 73 (a2) ◽  
pp. C1182-C1182
Author(s):  
Margarita Marchenkova ◽  
Anastasiia Boikova ◽  
Yulia Dyakova ◽  
Anton Opolchentsev ◽  
Pavel Prosekov ◽  
...  

2007 ◽  
Vol 334-335 ◽  
pp. 1245-1248 ◽  
Author(s):  
N. Rudraiah ◽  
C.O. Ng ◽  
C. Nagaraj

Electrohydrodynamic (EHD) dispersion of macromolecular components in a biological bearing consisting of a poorly conducting synovial fluid both in the cavity of the bones and in the bounding porous cartilage of finite thickness is investigated using Taylor’s [4] dispersion model . It is shown that artificial joints involving smart materials of nanostructure discussed here work more efficiently than the natural joints.


Langmuir ◽  
2010 ◽  
Vol 26 (16) ◽  
pp. 13535-13544 ◽  
Author(s):  
Mandeep Singh Bakshi ◽  
Harpreet Kaur ◽  
Tarlok Singh Banipal ◽  
Narpinder Singh ◽  
Gurinder Kaur

Author(s):  
Martin Vrbka ◽  
Tomas Navrat ◽  
Ivan Krupka ◽  
Martin Hartl ◽  
Jiri Gallo

The aim of this study is to perform detail experimental mapping of the lubricating film thickness of bovine serum (BS) within the contact between an artificial metal or ceramic femoral head and a glass disc and analyze effect of proteins on the film formation under rolling/sliding conditions. The film thickness was studied experimentally using an optical test rig as a function of time under variety of constant mean speeds. Chromatic interferograms were recorded with a high-speed digital camera and evaluated with thin film colorimetric interferometry. Under pure rolling conditions it was observed that the central film thicknesses increased with time for all measurements. When the disc was slower than head then the measured central film thicknesses achieved values only about some few nanometres, whereas when the tests were realized with faster disc then measured central film thicknesses achieved significantly higher values. Distribution of the film thickness within the contact zone is not homogeneous and two different film thickness regions can be found; thicker protein film and thinner base film that both show specific behaviour over time. This study showed that protein formation plays an important role in the lubrication processes of artificial joints of the human. Due to challenging of this study the more complex research work is carried out at the present time.


2014 ◽  
Vol 26 (6) ◽  
pp. 387-410 ◽  
Author(s):  
Subir Ghosh ◽  
Dipankar Choudhury ◽  
Nabangshu Shekhar Das ◽  
Belinda Pingguan-Murphy

Materials ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. 767 ◽  
Author(s):  
David Nečas ◽  
Martin Vrbka ◽  
Ivan Křupka ◽  
Martin Hartl

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