By J. Paulo Davim
Tribology is the “science and expertise of interacting surfaces in relative movement” and encompasses the examine of friction, put on and lubrication. by means of extension biotribology is generally outlined because the tribological phenomena taking place in both the human physique or in animals. consequently, it's attainable to think about tribological tactics which could happen after implantation of a man-made machine within the human physique and the tribological procedures certainly taking place in or at the tissues and organ of animals. Animals, together with people, own a large choice of sliding and frictional interfaces.
The authors objective to supply a few advances in learn in biotribology. They conceal a number of elements of biotribology equivalent to tribology of synovial joints and synthetic replacements; put on of screws and plates in bone fractures fix; put on of denture and restorative fabrics; friction of the surface and luxury of garments; put on of alternative middle valves; tribology of touch lenses and ocular tribology; biotribology at the microscale and nanoscale degrees, etc.
This e-book can be utilized as a examine textual content for ultimate undergraduate engineering classes (for instance, fabrics, biomedical, etc.) or for these learning the topic of biotribology on the postgraduate point. it could additionally function an invaluable reference for lecturers, biomechanical researchers, biologists, chemists, physicists, biomedicals and fabrics engineers, and different execs in comparable engineering, medication and biomedical industries.
Chapter 1 Biotribology of overall Hip substitute: The Metal?on?Metal Articulation (pages 1–49): J. Philippe Kretzer
Chapter 2 Experimental put on reports of overall Joint Replacements (pages 51–86): Claire Brockett and John Fisher
Chapter three impression of Temperature on Creep and Deformation in UHMWPE lower than Tribological Loading in synthetic Joints (pages 87–142): Mathias Christian Galetz and Uwe Glatzel
Chapter four huge ability put on trying out (pages 143–155): Vesa Saikko
Chapter five Biotribology of Titanium Alloys (pages 157–197): Yong Luo
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Additional resources for Biotribology
Distribution of cobalt chromium wear and corrosion products and biologic reactions”, Clinical Orthopaedics and Related Research, vol. 329, 1996, p. 233-243. , “Cobalt Chromium Molybdenum metal-on-metal resurfacing orthopaedic hip devices”, Business Briefing: Medical Device Manufacturing & Technology 2004, 2004. URL: http://www. , “Bovine articular cartilage surface topography and roughness in fresh versus frozen tissue samples using atomic force microscopy”, 2003 Summer Bioengineering Conference; 2003, Key Biscanye, Florida.
A constant coefficient of friction (or friction factor) with a rising Sommerfeld number is indicative of boundary lubrication. Decreasing friction factor with an increasing Sommerfeld number indicates mixed lubrication, where an increasing proportion of the load is Experimental Wear Studies 57 being supported by the lubricant, hence the friction is decreasing. Fluid film lubrication is demonstrated by an increasing friction factor with an increasing Sommerfeld number, caused by the viscous shear within the lubricant.
Possible long-term issues related to particles and ions are cytotoxic or mutagenic reactions [DAL 04, MAL 93, SUN 97, DAV 05], hypersensitivity [HAL 01, GRA 06] and carcinogenicity [VIS 96, MAT 95], all of which are controversially discussed. Single cases of osteolysis have also been reported [KLA 99, BEA 01]. Total Hip Replacement 35 Recently, some reports of inflammatory pseudotumors after metal-on-metal hip surface replacements have been reported [PAN 08, MAH 09, DEP 10, GLY 09]. Pseudotumours are a serious complication defined as a local soft tissue mass associated with localized bone or tissue destruction.
Biotribology by J. Paulo Davim