The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

Zietz, Carmen; Fabry, Christian; Baum, Felix; Bader, Rainer; Kluess, Daniel

doi:10.1016/j.arth.2015.02.025

Cited by 11 publications

(2 citation statements)

References 49 publications

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“…62 In contrast, the results of Shankar et al 63 found that the finite element simulation of the ZrO 2 femoral head with the UHMWPE acetabulum under frictional mating was about 0.1 mm 3 per 1 million gait cycles, which is closer to the volume wear of the UHMWPE acetabulum predicted by the present method under one year of normal gait walking. Also in the study by Zietz et al, 64 the wear per million cycles of the XLPE acetabulum at 37°C synovial fluid temperature obtained by the hip simulator was about 3.35 mm 3 , which is about 6 times higher than the 0.568 mm 3 volumetric wear at 37°C that we obtained by finite element calculations. Compared with existing studies, the predicted values of 1 million volume wears obtained by numerical simulation are to some extent able to explain the frictional heat-induced wear at the acetabular interface of the artificial hip joint.…”

Section: Resultscontrasting

confidence: 44%

Effect of synovial fluid temperature on wear resistance of different polymer acetabular materials

Wang

Lin

et al. 2023

J Biomater Appl

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In order to investigate the effect of frictional heat on the wear resistance characteristics of polymeric acetabular materials, the tribological tests and wear numerical analysis of three common polymer acetabular materials were carried out under different synovial fluid temperatures. The study results show that XLPE and VE-XLPE exhibit superior wear resistance compared to UHMWPE in high-temperature, heavy load environments. The coefficient of friction of three materials gradually decreases as the temperature of the synovial fluid increases. The wear depth and wear volume of the three materials increased with the increase of the temperature of the synovial fluid, and the forms of wear at 46°C and 55°C were mainly adhesive wear and plastic deformation. The higher temperature of the synovial fluid accelerates the oxidative degradation of the material surface and generates oxidation functional groups, which leads to the breakage of C-C bonds in the surface molecular chains under the sliding shear effect, thus reducing the mechanical properties of the material. Specifically, the surface of the polymer material will soften at a higher ambient temperature, mainly due to the decrease of hardness, and then deteriorate in the friction property, and finally increase the wear rate. Ansys results showed that the volume wear of the three materials increased with the increase of synovial fluid temperature, and the trend could be approximately linear. Numerical calculations predict that VE-XLPE has the highest wear of 0.693 mm3 among the three materials at 37°C, followed by XLPE at 0.568 mm3 and UHMWPE with the lowest wear of 0.478 mm3. At higher synovial fluid temperatures (46°C, 55°C), VE-XLPE still has the largest wear volume among the three materials, while XLPE and UHMWPE have similar wear. The wear cloud pictures showed that the maximum wear volume occurred near the edge of the acetabulum.

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Section: Resultscontrasting

confidence: 44%

Effect of synovial fluid temperature on wear resistance of different polymer acetabular materials

Wang

Lin

et al. 2023

J Biomater Appl

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“…Experimental hip simulators are not ideal for performing parametric studies, and therefore we developed a numerical wear simulation using finite element analysis (FEA). The use of FEA [ 14 , 15 , 16 ] to validate, check, or contrast experimental data [ 17 , 18 ] about wear rate has been used and improved from the beginning of the use of computational techniques, with reasonable accuracy of outcomes [ 19 ]. Recently, studies have combined 2D and 3D axisymmetric approaches to understand the strain energy density in metallic implants [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Risk of Wear on Cemented and Uncemented Polyethylene Liners According to Different Variables in Hip Arthroplasty

Bravo¹

2021

Materials

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Wear debris in total hip arthroplasty is one of the main causes of loosening and failure, and the optimal acetabular fixation for primary total hip arthroplasty is still controversial because there is no significant difference between cemented and uncemented types for long-term clinical and functional outcome. To assess and predict, from a theoretical viewpoint, the risk of wear with two types of polyethylene liners, cemented and uncemented, a simulation using the finite element (FE) method was carried out. The risk of wear was analyzed according to different variables: the polyethylene acetabular component’s position with respect to the center of rotation of the hip; the thickness of the polyethylene insert; the material of the femoral head; and the relationship of the cervical–diaphyseal morphology of the proximal end of the femur to the restoration of the femoral offset. In all 72 simulations studied, a difference was observed in favour of a cemented solution with respect to the risk of wear. With regard to the other variables, the acetabular fixation, the thickness of the polyethylene, and the acetabular component positioning were statistically significant. The highest values for the risk of wear corresponded to a smaller thickness (5.3 mm), and super-lateral positioning at 25 mm reached the highest value of the von Mises stress. According to our results, for the reconstruction of the acetabular side, a cemented insert with a thickness of at least 5 mm should be used at the center of rotation.

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Finite Element Analysis of the Acetabular Cup in Total Hip Arthroplasty

Hussain,

Kanagaraj

2023

Healthcare Research and Related Technologies

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The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

Cited by 11 publications

References 49 publications

Effect of synovial fluid temperature on wear resistance of different polymer acetabular materials

Effect of synovial fluid temperature on wear resistance of different polymer acetabular materials

Analysis of the Risk of Wear on Cemented and Uncemented Polyethylene Liners According to Different Variables in Hip Arthroplasty

Finite Element Analysis of the Acetabular Cup in Total Hip Arthroplasty

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