PMID: 9427831Jan 1, 1997Paper

Evaluation of the frictional properties of an elastomer with enhanced lipid-adsorbing ability

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
P F WilliamsM LaBerge

Abstract

Wear particle production in load-bearing orthopaedic implants is one of the major factors currently limiting the service life of the implant. Most of the research carried out to date in attempting to solve this problem has used the approach of finding more wear-resistant biocompatible material pairs. In contrast, other researchers have attempted to reduce wear by encouraging elastohydrodynamic film formation through the use of elastomeric bearing surfaces. Unfortunately, these elastomeric bearing surfaces have poor tribological properties when a fluid film is not present. Boundary lubrication of an elastomeric orthopaedic bearing may alleviate some of these difficulties. The purpose of this research was to fabricate and characterize an elastomeric material that had a surface capable of specifically adsorbing a naturally occurring boundary lubricant. Dipalmitoyl phosphatidylcholine (DPPC) has been previously shown to be able to act as a boundary lubricant at stresses that occur in human load-bearing joints such as the hip and knee; therefore, DPPC was chosen for use in this study. It was expected that in an aqueous liposome suspension the static coefficient of friction microseconds of such a material would be lower, and increase...Continue Reading

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Citations

Mar 24, 1999·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·J R FoyM LaBerge
Sep 11, 2002·Journal of Biomedical Materials Research·Rebecca A CaldwellMartine LaBerge
Nov 2, 2006·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Anne E MeyerMasood Chowhan
Jul 16, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Ana-Maria Trunfio-SfarghiuJean-Paul Rieu

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