Predicting wear of UHMWPE: Decreasing wear rate following a change in direction

Dressler, Matthew; Strickland, Michael; Taylor, Mark; Render, Todd; Ernsberger, C.

doi:10.1016/j.wear.2011.06.006

Cited by 31 publications

(8 citation statements)

References 33 publications

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“…Korduba and Wang (2011) also found the critical aspect ratio to be 4, which resulted in highest wear factor, for conventional UHMWPE and reported that highly crosslinked UHMWPE with a total irradiation dose of 90 kGy was unaffected by changing aspect ratios. Finally, in another study, wear of moderately irradiated (with a dose of 40 and 50 kGy) UHMWPE was found to be higher right after discrete cross shear events and dropped to almost zero in ∼5mm of unidirectional sliding (Dressler et al, 2011). This finding challenged the validity of using wear factors and Archard's law, which anticipated that wear was proportional to sliding distance.…”

Section: Development Of Pin-on-disk Testingmentioning

confidence: 90%

Advances in tribological testing of artificial joint biomaterials using multidirectional pin-on-disk testers

Baykal

Siskey

Haider

et al. 2014

Journal of the Mechanical Behavior of Biomedical Materials

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The introduction of numerous formulations of Ultra-high molecular weight polyethylene (UHMWPE), which is widely used as a bearing material in orthopedic implants, necessitated screening of bearing couples to identify promising iterations for expensive joint simulations. Pin-on-disk (POD) testers capable of multidirectional sliding can correctly rank formulations of UHMWPE with respect to their predictive in vivo wear behavior. However, there are still uncertainties regarding POD test parameters for facilitating clinically relevant wear mechanisms of UHMWPE. Studies on the development of POD testing were briefly summarized. We systematically reviewed wear rate data of UHMWPE generated by POD testers. To determine if POD testing was capable of correctly ranking bearings and if test parameters outlined in ASTM F732 enabled differentiation between wear behavior of various formulations, mean wear rates of non-irradiated, conventional (25–50 kGy) and highly crosslinked (≥90 kGy) UHMWPE were grouped and compared. The mean wear rates of non-irradiated, conventional and highly crosslinked UHMWPEs were 7.03, 5.39 and 0.67 mm3/MC. Based on studies that complied with the guidelines of ASTM F732, the mean wear rates of non-irradiated, conventional and highly crosslinked UHMWPEs were 0.32, 0.21 and 0.04 mm3/km, respectively. In both sets of results, the mean wear rate of highly crosslinked UHMPWE was smaller than both conventional and non-irradiated UHMWPEs (p<0.05). Thus, POD testers can compare highly crosslinked and conventional UHMWPEs despite different test parameters. Narrowing the allowable range for standardized test parameters could improve sensitivity of multi-axial testers in correctly ranking materials.

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Section: Development Of Pin-on-disk Testingmentioning

confidence: 90%

Advances in tribological testing of artificial joint biomaterials using multidirectional pin-on-disk testers

Baykal

Siskey

Haider

et al. 2014

Journal of the Mechanical Behavior of Biomedical Materials

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“…67 It is worth noting that majority of the cross-shear models were time independent, that is, assuming that the molecular orientation remains fixed in a single direction over time, which may not be a clinical relevant representation. 115 Hence, time dependent cross-shear models 31,93 have been developed to improve the accuracy of wear prediction.…”

Section: Fea Wear Modellingmentioning

confidence: 99%

Finite element analysis of polyethylene wear in total hip replacement: A literature review

Wang

Isaac

Wilcox

et al. 2019

Proc Inst Mech Eng H

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Evaluation and prediction of wear play a key role in product design and material selection of total hip replacements, because wear debris is one of the main causes of loosening and failure. Multifactorial clinical or laboratory studies are high cost and require unfeasible timeframes for implant development. Simulation using finite element methods is an efficient and inexpensive alternative to predict wear and pre-screen various parameters. This article presents a comprehensive literature review of the state-of-the-art finite element modelling techniques that have been applied to evaluate wear in polyethylene hip replacement components. A number of knowledge gaps are identified including the need to develop appropriate wear coefficients and the analysis of daily living activities.

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“…Osteoarthritis is also known as “degenerative joint disease” and occurs as a result of loss in articular cartilage which lines the bone of synovial joints [1] . Articular cartilage minimises stress on subchondral bone and provides low friction surfaces [2,3] playing an essential role in these lubricating junctions.…”

Section: Introductionmentioning

confidence: 99%