Wear of UHMWPE sliding against untreated, titanium nitridecoated and ‘Hardcor’-treated stainless steel counterfaces

Derbyshire, Brian; Fisher, John; Dowson, D.; Hardaker, C.; Brummitt, K.

doi:10.1016/0043-1648(95)90032-2

Cited by 17 publications

(16 citation statements)

References 12 publications

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“…The creep components and penetration rates were determined from the shadowgraph wear Wear in simulators is generally lower than that observed in vivo [3] and the data in Tables 2 and 3 [3] 0.06 Stainless steel 3.4 Good et al [4] 0.52 CoCrMo 660 1.83* Charnley et al [5] 39 Stainless steel 2.26 (0.91 to 6.04) * By assuming that the femoral head bores a cylinder into the acetabular cup and knowing the femoral head size and acetabular cup material density, a penetration rate can be calculated from the weight loss results. [6 ] 3.1 Stainless steel 0.054 Saikko et al [7] 3.0 Stainless steel 46, 51, 62 0.15* Derbyshire et al [8] 1.97 Stainless steel 0.04 Charnley and Halley [9] 63 Stainless steel 0.15 Atkinson et al [10] 25 Stainless steel 0.18 (0.005 to 0.6) Wroblewski [11] 22 HDP cup/stainless steel 0.19 (0.017 to 0.52) Isaac et al [12] 87 Stainless steel 0.21 (0.005 to 0.6) Kabo et al [13] 5 Stainless steel 0.127 Hall et al [14] 28 Stainless steel 0.23 (0 to 0.6) * By assuming that the femoral head bores a cylinder into the acetabular cup and knowing the femoral head size and acetabular cup material density, a penetration rate can be calculated from the weight loss results. results confirms this observation.…”

Section: Introduction 2 Materials and Methodsmentioning

confidence: 99%

Evaluation of a hip joint simulator

Smith

Burgess

Unsworth

1999

Proc Inst Mech Eng H

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To evaluate the functioning of the Durham hip joint wear simulator, the wear rates of ultra high molecular weight polyethylene (UHMWPE) and polytetrafluoroethylene (PTFE) acetabular cups articulating against 22 mm diameter cobalt-chromium-molybdenum (CoCrMo) femoral heads were studied. A wear test was conducted in a lubricant of distilled water at 37 degrees C for a duration of 4.8 million cycles. The average penetration rate for the CoCrMo femoral heads against UHMWPE acetabular cups was 0.03 mm/10(6) cycles, while penetration rate for PTFE cups was some twenty times greater. These results are of a similar order of magnitude to other simulator studies in distilled water and are in a similar ratio to clinical data.

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Section: Introduction 2 Materials and Methodsmentioning

confidence: 99%

Evaluation of a hip joint simulator

Smith

Burgess

Unsworth

1999

Proc Inst Mech Eng H

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“…The long ribbon shape has been observed in other studies, where the formation of these ribbons has been shown to mostly depend on the roughness of the counterface metal [42,43]. These longer ribbon-shaped wear debris indicate a predominantly abrasive wear mechanism [43], in which counterface asperities plow the surface of the sample under repeated deformation.…”

Section: Wear Surfaces and Debrismentioning

confidence: 99%

Influence of phase morphology on the sliding wear of polyethylene blends filled with carbon nanofibers

Wood

Zhong

2009

Polymer Engineering & Sci

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In this work, phase separation in carbon nanofiber (CNF) composites with a blend of ultrahigh molecular weight polyethylene (UHMWPE)/high‐density polyethylene (HDPE) was revealed, and its effects on tribological properties were investigated. Results from morphological analysis by optical and scanning electron microscopy indicated two distinct microstructures: a dispersed UHMWPE phase and a continuous microstructure containing HDPE and CNFs. The addition of CNFs into the UHMWPE/HDPE blend induced a decreased steady‐state torque indicative of a decreased dissolution and improved processability. Because CNFs predominantly resided into the HDPE phase, neat HDPE, a HDPE/CNF composite, and neat UHMWPE samples were also prepared for comparison. Wear results, determined by a pin‐on‐disk apparatus, showed that both initial run‐in and steady‐state wear rates of the UHMWPE/HDPE/CNF nanocomposites were reduced with an increasing concentration of CNFs. The wear resistance of the UHMWPE/HDPE blend was more strongly influenced than neat HDPE by the addition of CNFs, which may have been affected by a reduced dissolution and improved interfacial interaction between the two phases. Results from this study suggested that HDPE may not be appropriate for processing UHMWPE composites, as CNFs reside in the HDPE phase, and HDPE diminishes the wear resistance of the material. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers

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“…Given that experimental evidence the mean volumetric wear rate, using weighted linear regression. In this case, however, the model of the indicates that the creep component is constant after a relatively short period [6,8,9], the gradient, m, of the weighting changed slightly, with 'service life' in the denominator of equation (3) being replaced with NWr, function is equal to the volumetric wear rate, ¢V/¢T. A dimensionless weighting, w, was applied to the regression which is de ned as …”

Section: Notationmentioning

confidence: 99%

The effect of socket design, materials and liner thickness on the wear of the porous coated anatomic total hip replacement

Elfick

Hall

Pinder

et al. 2001

Proc Inst Mech Eng H

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The wear of joint replacement prostheses represents the greatest challenge to their continued development. Parameters such as polyethylene quality, liner thickness and metal backing have all been implicated as potential detractors in the search for the lowest-wearing socket. This study examined the effect of these parameters through an extensive study of the two versions of the porous coated anatomic (PCA) hip prosthesis (one-piece socket and snaplock socket). For the whole cohort the wear rate was found to be 88 (SE 10) mm3/year and the clinical wear factor was 2.00 (SE 0.28) x 10(-6) mm3/N m. When the two socket types were investigated individually, the wear factors found were 2.39 (SE 0.44) x 10(-6)mm3/N m and 0.99 (SE 0.25) x 10(-6) mm3/N m for the one-piece and snaplock, respectively. This illustrates that the metal backing per se does not predispose these sockets to rapid wear. The good wear performance of the snaplock liner may be attributed to the high quality of the ultra-high molecular weight polyethylene (UHMWPE) used and the shorter implantation period compared to that for the one-piece design. No correlation was found between the thickness of the liner and the clinical wear factor. Within the range of thicknesses tested here, UHMWPE thickness is not an influential parameter for the hip prosthesis and this is confirmed

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Wear of UHMWPE sliding against untreated, titanium nitridecoated and ‘Hardcor’-treated stainless steel counterfaces

Cited by 17 publications

References 12 publications

Evaluation of a hip joint simulator

Evaluation of a hip joint simulator

Influence of phase morphology on the sliding wear of polyethylene blends filled with carbon nanofibers

The effect of socket design, materials and liner thickness on the wear of the porous coated anatomic total hip replacement

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