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  • Print publication year: 2011
  • Online publication date: June 2012

11 - Friction, lubrication, and wear

from Part II - Mechanics



You are designing a total knee replacement – a high-load device for which wear is a major concern. What would your ideal materials be for a low-wear device? Are there other concerns at play here, and how do they affect your material selection?

The inquiry posed above gives an idea of the issues that must be balanced in medical device design. A total knee replacement will see contact stresses of 40 MPa (Bartel et al., 1986) and will undergo 1 million fatigue cycles per year. We have already discussed the dangers of stress shielding which can occur when using high stiffness materials. Selecting a material that can meet these demands and still maintain low amounts of wear is a challenge that must be tackled by a team of engineers and scientists.


When thinking about designing devices that will have contact with any other materials, it is necessary to consider issues of friction, lubrication, and wear, also known as the field of tribology. These are particularly critical in load-bearing medical device applications such as total joint replacements, where the generation of wear debris is a known issue that begins a cycle of immune response and the eventual need for device replacement. Frictionless contact would be ideal, but does not exist in the real world. It has also been shown that low-friction contact can still lead to appreciable wear (Stachiowak and Batchelor, 2005). In orthodontic implants such as braces, a smooth surface to the arch wires is very important – frictional forces are known to reduce the amount of force applied to the teeth by 50% or more (Bourauel et al., 1998 ). The characterization of the interface between two surfaces, including the composition of the articulating materials, the surface finishes, and the lubricant (if any) will play a large role in determining the friction and wear behavior.

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Hamrock, B. J.Schmid, S. R.Jacobson, B. O. 2004 Fundamentals of fluid film lubricationNew York, NYMarcel Dekker
Hirano, S.May, K.Wagner, W.Hacker, C. 1998 In vitro wear of resin denture teethJournal of Prosthetic Dentistry 79 152
Joyce, T. 2009 Biopolymer tribologyPolymer TribologySinha, S.K.Briscoe, B.J.LondonImperial College Press227
Kennedy, F.E.Booser, E.R.Wilcock, D.F. 2005 Tribology, lubrication and bearing designThe CRC Handbook of Mechanical EngineeringKreith, F.Goswami, D. Y.Boca Raton, FLCRC Press3
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Komvopoulos, K. 1998 Fundamentals of Tribology and Contact MechanicsBerkeleyUniversity of California Press
Kurtz, S.M. 2009 The origins of UHMWPE in total hip arthroplastyUHMWPE Biomaterials HandbookKurtz, S.M.Burlington, MAElsevier31
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Minas, T.Glowacki, J. 2003 Cartilage repair and regenerationOperative ArthroscopyMcGinty, J.B.Burkhart, S.S.Jackson, R.W.Johnson, D.H.Richmond, J.C.Philadelphia, PALippincott, Williams and Wilkins127
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Neu, C.P.Komvopoulos, K.Reddi, A.H. 2008 The interface of functional biotribology and regenerative medicine in synovial jointsTissue Engineering Part B 14 235
Schafrik, R.E. 2005 Unit manufacturing and assembly processesThe CRC Handbook of Mechanical EngineeringKreith, F.Goswami, D.Y.Boca Raton, FLCRC Press13
Stachiowak, G.W.Batchelor, A.W. 2005 Engineering TribologyBurlington, MAElsevier Butterworth-Heineman
Thomas, T.R. 1999 Rough SurfacesLondonImperial College Press
Wang, C.Wang, Y. 2004 Tribology of endoprosthesesBiomechanics and Biomaterials in OrthopedicsLondonSpringer-Verlag168