The effect of frictional heating and forced cooling on the serum lubricant and wear of UHMW polyethylene cups against cobalt–chromium and zirconia balls

Liao, Yen Shuo; McKellop, Harry A.; Lu, Zhen; Campbell, P.; Benya, Paul D.

doi:10.1016/s0142-9612(03)00148-0

Cited by 78 publications

(76 citation statements)

References 21 publications

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“…This may be the result of thermal heating at the articulating surfaces when testing at 2 Hz. PEEK is considered a thermal insulator (thermal conductivity of 0.25 W/mK) as compared to the more common material of CoCr (thermal conductivity of 18 W/mK), and this may have resulted in denaturization of the proteinaceous lubricant, potentially forming a protective triobolayer [27][28][29]. This is supported by the results for Group 3, where a reduced protein content of 5 g/L and a decrease in the lubricant temperature to 23°C was performed to reduce any thermal artifact and further minimize protein denaturization.…”

Section: Discussionmentioning

confidence: 99%

The use of self-mating PEEK as an alternative bearing material for cervical disc arthroplasty: a comparison of different simulator inputs and tribological environments

Brown

Bao

2012

Eur Spine J

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Purpose The hypothesis for this study was that the simulated wear behavior of a hydroxyapatite coated, selfmating PEEK cervical disc arthroplasty device would be dependent on the simulated testing environment. Methods Five groups of devices were evaluated under suggested ASTM and ISO load and motion profiles. The groups utilized different testing frequencies and protein content of simulator fluid, in addition to assessing the potential for third body wear. The average wear rates were determined using linear regression analysis with a generalized estimating equation. Significant differences between groups were determined using the Wald's test. Results The simulated wear behavior was shown to be highly dependent on the testing environment, where protein content more than decreasing the cyclic loading frequency resulted in increased wear, but was not dependent on the suggested load and motion profiles. It was demonstrated that a self-mating PEEK cervical disc arthroplasty device has wear rates that are similar to existing material combinations for cervical disc arthroplasty. Conclusions This study showed that at a time when data from retrieval analyses is deficient, it is important to test the wear resistance of cervical disc arthroplasty devices under various conditions. Long-term clinical results and ongoing implant retrievals are required for validation between clinical performance and simulator inputs.

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Section: Discussionmentioning

confidence: 99%

The use of self-mating PEEK as an alternative bearing material for cervical disc arthroplasty: a comparison of different simulator inputs and tribological environments

Brown

Bao

2012

Eur Spine J

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“…It is considered that main driving forces of natural adsorption of proteins in aqueous solution are hydrophobic and electrostatic interactions. However, possibilities of denaturation and conformation change of proteins by shearing force are indicated in other studies [12][13][14] . In addition, it is indicated that the adsorption of proteins becomes more irreversible as proteins undergo more conformation change 15) .…”

Section: Resultsmentioning

confidence: 99%

Effects of Lubricant Composition on Adsorption Behavior of Proteins on Rubbing Surface and Stability of Protein Boundary Film

et al. 2008

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Polyvinyl alcohol (PVA) hydrogel is one of the candidate materials for artificial cartilage. In previous research, it was found that the structure of protein boundary film is important essence for wear reduction of PVA hydrogel, and the stability of protein boundary film changes with relative ratio and total concentration of proteins. In this study, the behavior of protein adsorption on the glass surface rubbed with PVA hydrogel was observed by using total internal reflection fluorescence microscopy (TIRFM). Amount of adsorbed proteins under rubbed condition increased compared to those under statically immersed condition. In lubricant in which a stable protein boundary film was formed, the amount of adsorbed proteins in bottom layer of protein boundary film increased significantly with an increase of sliding distance. In addition, the ratio of adsorbed immuno globulin G (IgG) to albumin was higher than that in lubricant in which an exfoliative protein boundary film was formed. These results indicate that the formation of bottom layer mainly composed of γ-globulin is a critical element to form a stable boundary film, and the friction-induced enhancement of forming protein boundary film may occur in lubricant with appropriate protein constituents.

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“…The pins were articulated at a frequency of 1 Hz on a 12ˆ10 mm elliptical wear path [21]. The test chambers were kept at a temperature of approximately 22˝C, as it has been seen with higher temperatures that protein precipitation occurs which reduces wear [31] whereas temperatures around 22˝C produced clinically relevant wear [23]. The new born calf serum was diluted with deionized water resulting in a lubricant with a protein concentration of 22 g/L; no additives were used with the lubricant, and there was approximately 14 mL of lubricant in each test chamber.…”

Section: Methodsmentioning

confidence: 99%

A Tribological Assessment of Ultra High Molecular Weight Polyethylene Types GUR 1020 and GUR 1050 for Orthopedic Applications

Hunt

Joyce

2016

Lubricants

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Abstract:The wear properties of biomaterials have been demonstrated to have a high importance within orthopedic bearing surfaces. This study performed a comparison of the wear between the two main grades of Ultra High Molecular Weight Polyethylene types GUR 1020 and GUR 1050 articulating against Cobalt Chromium. Such a high capacity wear comparison has not been reported elsewhere in the scientific literature. Under an identical testing protocol it was found that GUR 1020 had a wear factor of 3.92˘0.55ˆ10´6`mm 3 {Nm˘and GUR 1050 had a wear factor of 3.64˘0.39ˆ10´6`mm 3 {Nm˘, with a non-statistical significant difference of p = 0.052. These wear factors correlate closely with those observed from other screening wear studies and explant analysis.

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The effect of frictional heating and forced cooling on the serum lubricant and wear of UHMW polyethylene cups against cobalt–chromium and zirconia balls

Cited by 78 publications

References 21 publications

The use of self-mating PEEK as an alternative bearing material for cervical disc arthroplasty: a comparison of different simulator inputs and tribological environments

The use of self-mating PEEK as an alternative bearing material for cervical disc arthroplasty: a comparison of different simulator inputs and tribological environments

Effects of Lubricant Composition on Adsorption Behavior of Proteins on Rubbing Surface and Stability of Protein Boundary Film

A Tribological Assessment of Ultra High Molecular Weight Polyethylene Types GUR 1020 and GUR 1050 for Orthopedic Applications

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