The Determination of Abrasion Resistance of Selected Biomaterials for the Friction Pairs in the Hip Joint Endoprosthesis

Zasińska, Katarzyna; Seramak, Tomasz; Łubiński, Jacek

doi:10.2478/adms-2014-0015

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The analyses performed in the study revealed that the polyethylene insert represents the weakest component of the endoprosthesis [6,7]. The presented numerical analysis is the most efficient and clearest method to define distribution of stresses and strains present in components of hip and knee joint endoprostheses.…”

Section: Introductionmentioning

confidence: 99%

The finite element method in the analysis of the stress and strain distribution in polyethylene elements of hip and knee joints endoprostheses

Nabrdalik

Sobociński

2019

MATEC Web Conf.

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The paper presents the numerical analysis of stress and strain occurring in the most wearable parts of hip and knee joints endoprostheses. The complexity of the processes taking place in both, natural and artificial joints, makes it necessary to conduct the analysis on the 3D model based on already existing mathematical models. Most of the mechanical failures in alloplasty are caused by material fatigue. To cut down the risk of it, we can either increase the fatigue resistance of the material or decrease the load strain. It is extremelly important to indicate the areas where damage or premature wear may occur. The Finite Elements Method makes it possible to calculate the stress and strain in particular elements of the tested models. All presented numerical calculations define quality conclusions concerning the influence of some parameters of endoprostheses on the values of stress and strain that are formed in polyethylene parts of endoprotheses of hip and knee joints. The obtained results help to reveal “weak points” in examined models and thus, counteract the subsequent effects resulting from premature wear of endoprosthesis elements. The numerical analysis was performed basing on the finite elements method using Autodesk Simulation Mechanical 2017 software and the ADINA 7.5.1.

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Section: Introductionmentioning

confidence: 99%

The finite element method in the analysis of the stress and strain distribution in polyethylene elements of hip and knee joints endoprostheses

Nabrdalik

Sobociński

2019

MATEC Web Conf.

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The Effect of the Coefficient of Friction on the Biomechanics of Contact in Hip Endoprosthesis

et al. 2017

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Hip replacement surgery, by introducing a specific replacement head on the stem and cup, completely changes the conditions of co-operation typical for the biological correct pair. The clinical selection of endoprosthesis, apart from other conditionings, involves a dilemma between the choice of a rigid tribological node and the selection of a susceptible bearing cushioning the locomotive loads. The aim of the study is to evaluate the coefficient of friction and wear resistance of materials used for sliding contact in the endoprostheses of hip joints. On the basis of the conducted tests, it can be stated that, in the selection of material for cups of endoprosthesis, the wear resistance is important, and the coefficient of friction in contact head and cup in the prosthesis is less important. The presence of significant disproportions between the two parameters of the tribological process proves that the biomaterial is less useful on the cup. In the assessment of cooperation in the endoprosthesis, simulations of the contact of structural elements are useful, because, on that basis, in the correlation with tribological parameters, one can make conclusions about the distribution of stresses and displacements that may determine the lifetime of the implant.

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Ecology in Tribology: Selected Problems Ofeliminating Natural Oil-Based Lubricants Frommachine Friction Couples

2023

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The elimination of mineral oil-based lubricants from machines has multiple beneficial effects on the naturalenvironment. Firstly these lubricants are a direct threat to the environment in the event of leaks; secondly their elimination reduces the demand for crude oil from which they are obtained. In addition, in many cases,e.g. when replacing traditional lubricants with water, friction losses in the bearings can also be reduced due tothe lower viscosity of the water, which reduces the energy dissipation in machines.On the other hand, the introduction of self-lubricating materials or water-lubricated bearings causes problemsrelated to the need to adapt the design of machines and materials used to new operating conditions and changedproperties of the lubricants. In the paper, selected examples of problems related to the use of ecologicallubricants are discussed. The high cost of PEEK based polymers resulted in the emergence of cheapersubstitutes on the market; however, in the conducted research, the substitutes presented worse properties thanthose declared by their manufacturers.

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The Determination of Abrasion Resistance of Selected Biomaterials for the Friction Pairs in the Hip Joint Endoprosthesis

Cited by 3 publications

References 14 publications

The finite element method in the analysis of the stress and strain distribution in polyethylene elements of hip and knee joints endoprostheses

The finite element method in the analysis of the stress and strain distribution in polyethylene elements of hip and knee joints endoprostheses

The Effect of the Coefficient of Friction on the Biomechanics of Contact in Hip Endoprosthesis

Ecology in Tribology: Selected Problems Ofeliminating Natural Oil-Based Lubricants Frommachine Friction Couples

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