Effect of lubricant on the wear of prosthetic joint materials

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ahlroos, Tiina
dc.date.accessioned 2012-02-13T12:31:34Z
dc.date.available 2012-02-13T12:31:34Z
dc.date.issued 2001-11-28
dc.identifier.isbn 951-22-5898-6
dc.identifier.issn 0001-687X
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2366
dc.description.abstract The wear of ultra-high molecular weight polyethylene (UHMWPE) in prosthetic hip and knee joints is a significant clinical problem. The wear particles cause inflammatory tissue reactions which may lead to osteolysis and loosening of the implant fixation. The effect of lubricant on the wear of polyethylene was studied with a reciprocating pin-on-flat (RPF) apparatus, uniaxial (HUT-2) and three-axis (HUT-3) hip joint simulators, circularly translating pin-on-disk (CTPOD) device, biaxial rocking motion (BRM-1 and BRM-2) hip wear simulators, and a three-axis ball-on-flat (BOF) knee wear simulator. The aim was to produce wear similar to that known to occur clinically. To accomplish this, the basic criteria for the lubricant were: 1) no polyethylene transfer layer should form on the metal counterface, 2) the bearing surface of the polyethylene should become burnished, 3) the wear particle size should be of the order of 1 μm, and 4) the wear factor should be of the order of 1 x 10-6 mm3/Nm. The lubricants studied were human prosthetic joint fluid, bovine and calf serum, bovine albumin and gamma-globulin, soybean lecithin, dipalmitoylphosphatidylcholine (DPPC), soy protein, and distilled water. The counterfaces of polyethylene were CoCr, stainless steel, alumina, and diamondlike carbon (DLC). All the criteria were met by bovine and calf serum, albumin and gamma-globulin. Hence, albumin and gamma-globulin proved to be the crucial fractions of serum and synovial fluid with respect to producing clinically relevant wear of polyethylene. In conclusion, realistic wear was produced when the direction of sliding constantly changed relative to the polyethylene specimen, and a protein-based lubricant was used. en
dc.format.extent 26, [45]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Acta polytechnica Scandinavica. Me en
dc.relation.ispartofseries 153 en
dc.relation.haspart Saikko, V., Ahlroos, T., Phospholipids as boundary lubricants in wear tests of prosthetic joint materials. Wear Vol. 207 (1997), p. 86-91.
dc.relation.haspart Ahlroos, T., Saikko, V., Wear of prosthetic joint materials in various lubricants. Wear Vol. 211 (1997), p. 113-119.
dc.relation.haspart Saikko, V., Ahlroos, T., Type of motion and lubricant in wear simulation of polyethylene acetabular cup. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Vol. 213 (1999), p. 301-310.
dc.relation.haspart Saikko, V., Ahlroos, T., Wear simulation of UHMWPE for total hip replacement with a multidirectional motion pin-on-disk device: Effects of counterface material, contact area, and lubricant. Journal of Biomedical Materials Research Vol. 49 (2000), p. 147-154.
dc.relation.haspart Saikko, V., Ahlroos, T., Calonius, O., Keränen, J., Wear simulation of total hip prostheses with polyethylene against CoCr, alumina and diamond-like carbon. Biomaterials Vol. 22 (2001), p. 1507-1514.
dc.relation.haspart Saikko, V., Ahlroos, T., Calonius, O., A three-axis knee wear simulator with ball-on-flat contact. Wear Vol. 249 (2001), p. 310-315.
dc.subject.other Materials science en
dc.subject.other Medical sciences en
dc.title Effect of lubricant on the wear of prosthetic joint materials en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Mechanical Engineering en
dc.contributor.department Konetekniikan osasto fi
dc.subject.keyword prosthetic joint en
dc.subject.keyword hip joint en
dc.subject.keyword knee joint en
dc.subject.keyword lubricant en
dc.subject.keyword polyethylene en
dc.subject.keyword wear en
dc.identifier.urn urn:nbn:fi:tkk-003116
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Laboratory of Machine Design en
dc.contributor.lab Koneensuunnitteluopin laboratorio fi

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