Introduction to wear phenomena of orthopaedic implants

Affatato, Saverio; Brando, Dorina

doi:10.1533/9780857096128.1.3

Cited by 20 publications

(14 citation statements)

References 67 publications

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“…The growth of aging population has caused an increasing demand for using metallic biomaterials in the manufacturing process of medical implants (e.g., hip [1,2] and knee [2,3] implants). Metals (and metal alloys) including stainless steels, Co-Cr-Mo, and titanium alloys are most commonly used in load-bearing implants because of their favorable features such as high strength, stiffness, and toughness.…”

Section: Introductionmentioning

confidence: 99%

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

2019

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The need for metallic biomaterials will always remain high with their growing demand in joint replacement in the aging population. This creates need for the market and researchers to focus on the development and advancement of the biometals. Desirable characteristics such as excellent biocompatibility, high strength, comparable elastic modulus with bones, good corrosion resistance, and high wear resistance are the significant issues to address for medical implants, particularly load-bearing orthopedic implants. The widespread use of titanium alloys in biomedical implants create a big demand to identify and assess the behavior and performance of these alloys when used in the human body. Being the most commonly used metal alloy in the fabrication of medical implants, mainly because of its good biocompatibility and corrosion resistance together with its high strength to weight ratio, the tribological behavior of these alloys have always been an important subject for study. Titanium alloys with improved wear resistance will of course enhance the longevity of implants in the body. In this paper, tribological performance of titanium alloys (medical grades) is reviewed. Various methods of surface modifications employed for titanium alloys are also discussed in the context of wear behavior.

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Section: Introductionmentioning

confidence: 99%

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

2019

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“…Grosso modo, for in vitro, there are two types of methods, analytical and numerical. Analytical models could involve integral-differential calculus [13][14][15][16], and are usually based on these model variants. The numerical group involves finite element techniques, both linear and nonlinear.…”

Section: Methodsmentioning

confidence: 99%

“…Analytical models could be linear and nonlinear [1,[14][15][16]. The linear models integrate the hardness within the K parameter.…”

Section: Theoretical and Clinical Biomechanics Tha Modelling Pathogenesis With Physics Fundamentalsmentioning

confidence: 99%

“…The linear models integrate the hardness within the K parameter. In this study, hardness is considered as an important separated parameter for optimization [1,2,[14][15][16]. In the literature, some authors begin developing the nonlinear model through integral-differential calculus and perform finite element calculations [15].…”

Section: Theoretical and Clinical Biomechanics Tha Modelling Pathogenesis With Physics Fundamentalsmentioning

confidence: 99%

“…Figure 1 shows a sketch of biomechanical theoretical base for the analytic model. The principal cause of wear in THA is abrasive wear type or three body abrasive wear [14,16].…”

Section: Theoretical and Clinical Biomechanics Tha Modelling Pathogenesis With Physics Fundamentalsmentioning

confidence: 99%

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Mathematical Standard-Parameters Dual Optimization for Metal Hip Arthroplasty Wear Modelling with Medical Physics Applications

Casesnoves¹

2021

Standards

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Total hip metal arthroplasty (THA) constitutes an important proportion of the standard clinical hip implant usage in Medical Physics and Biomedical Engineering. A computational nonlinear optimization is performed with two commonly metal materials in Metal-on-Metal (MoM) THA. Namely, Cast Co-Cr Alloy and Titanium. The principal result is the numerical determination of the K adimensional-constant parameter of the model. Results from a new more powerful algorithm than previous contributions, show significant improvements. Numerical standard figures for dual optimization give acceptable model-parameter values with low residuals. These results are demonstrated with 2D and 3D Graphical/Interior Optimization also. According to the findings/calculations, the standard optimized metal-model parameters are mathematically proven and verified. Mathematical consequences are obtained for model improvements and in vitro simulation methodology. The wear magnitude for in vitro determinations with these model parameter data constitute the innovation of the method. In consequence, the erosion prediction for laboratory experimental testing in THA adds valuable information to the literature. Applications lead to medical physics improvements for material/metal-THA designs.

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A Method to Determine the Nominal Diameter for Hip Joint with No “Pre-wear” Data

Neamțu

Popişter

Ghinea

et al. 2014

International Conference on Advancements of Medicine and Health Care Through Technology; 5th – 7th June 2014, Cluj-Napoca, Roma

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Introduction to wear phenomena of orthopaedic implants

Cited by 20 publications

References 67 publications

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

Mathematical Standard-Parameters Dual Optimization for Metal Hip Arthroplasty Wear Modelling with Medical Physics Applications

A Method to Determine the Nominal Diameter for Hip Joint with No “Pre-wear” Data

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