scholarly journals THE CERAMIC MODULAR HEAD IMPROVEMENT IN THE DESIGN OF A TOTAL HIP REPLACEMENT

2021 ◽  
Vol 19 (1) ◽  
pp. 067
Author(s):  
Vladimir Pakhaliuk ◽  
Aleksandr Poliakov ◽  
Ivan Fedotov
Keyword(s):  
Hip Replacement ◽  
Friction Pair ◽  
Low Cost ◽  
Bearing Surface ◽  
Zirconia Ceramics ◽  
Element Analysis ◽  
Hip Joint Replacement ◽  
Total Hip ◽  
Brazed Joint ◽  
First Time

For the first time, a design of a modular ceramic ball head of a total hip joint replacement (THR) friction pair has been developed, which has the properties of a metal in conjunction with the stem neck and the properties of a ceramics on bearing surface of the pair. This is achieved by creating a low-cost, low-toxic, durable fixed connection of the head made of alumina or zirconia ceramics and the titanium-based alloy sleeve to obtain a brazed joint that is efficient in human synovial fluid. With the help of finite element analysis, a quantitative assessment of the strength and rigidity of the proposed head design was performed and its use in modern hip arthroplasty was indicated. The approbation of the proposed design solutions for creating a THR ceramic head with a titanium-based alloy sleeve brazed was carried out.

IMPROVED DESIGN OF A HEAD OF A TOTAL HIP REPLACEMENT

2020 ◽  
Vol 4 (1) ◽  
pp. 139-143
Author(s):  
V.I. PAKHALIUK ◽  
A.M. POLIAKOV
Keyword(s):  
Titanium Alloy ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Low Cost ◽  
Friction Couple ◽  
Element Analysis ◽  
Total Hip ◽  
Improved Design ◽  
First Time ◽  
Soldered Joint

For the first time, the design of a modular ceramic head of a total hip replacement (THR) has been developed, which has the properties of a metal in join with the stem neck and the properties of a ceramic on the bearing surface of a friction couple. This is achieved by creating a low-cost, low-toxic, strong connection of alumina or zirconium ceramics and a titanium alloy to obtain a soldered joint that is efficient in human synovial fluid. With the help of finite element analysis, a qualitative and quantitative assessment of the strength and rigidity of the proposed head design has been made. Also shown is an image of a finished soldered head made of alumina ceramic with a sleeve made of titanium alloy VT1-0.

Finite Element Analysis (FEA) of the Different Cement Mixture for Total Hip Replacement

2021 ◽  
Author(s):  
Muhammad Izzuddin Md Isa ◽  
Solehuddin Shuib ◽  
Ahmad Zafir Romli ◽  
Amran Ahmed Shokri ◽  
Iffa Mohd Arrif ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Element Analysis ◽  
Total Hip ◽  
Cement Mixture

Experimental and numerical static failure analyses of total hip replacement interfaces

2019 ◽  
Vol 233 (11) ◽  
pp. 1183-1195
Author(s):  
Sait Kocak ◽  
Tezcan Sekercioglu
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Mechanical Tests ◽  
Test Methods ◽  
Element Analysis ◽  
Cement Interface ◽  
Total Hip ◽  
Joint Replacement Surgery ◽  
Replacement Surgery ◽  
Material Choice

In joint replacement surgery, the critical point in the success of cemented implants is the stabilisation between the implant and bone. The stronger the interlocking achieved on both the implant–cement interface and the cement–bone interface, the more durable is the surgical intervention. However, to date, it has not been possible to prevent aseptic loosening of hip implants, thus making a revision surgery necessary after a period of about 10 years. In this study, the tensile and shear strengths of the implant–cement and cement–bone interfaces and factors which can affect these strengths such as sandblasting parameters and implant material choice were investigated experimentally. The stresses on the total hip replacement interfaces were then determined via finite element analysis and the findings compared with the strength values obtained from the mechanical tests. The total hip replacement prosthesis was designed using SolidWorks software, and material properties and boundary conditions were modelled with the ANSYS Workbench software. Stresses due to the loads applied to the femur head had exceeded the highest tensile and shear strength values obtained by the classical test methods and damaged the contact surfaces in some regions. In light of these findings, the damage sites of the interfaces were determined.

scholarly journals Carbon Friction Pair in Total Hip Replacement

KnE Energy ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 240
Author(s):  
A N Mitroshin ◽  
S V Evdokimov ◽  
A S Kibitkin ◽  
M A Ksenofontov ◽  
D A Kosmynin
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Friction Pair ◽  
Total Hip

.

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

2019 ◽  
Vol 233 (11) ◽  
pp. 1067-1088 ◽  
Author(s):  
Lin Wang ◽  
Graham Isaac ◽  
Ruth Wilcox ◽  
Alison Jones ◽  
Jonathan Thompson
Keyword(s):  
Finite Element ◽  
Literature Review ◽  
Hip Replacement ◽  
Material Selection ◽  
Polyethylene Wear ◽  
Element Analysis ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Hip Replacements ◽  
Modelling Techniques

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.

BEARING SURFACE OPTIONS FOR TOTAL HIP REPLACEMENT IN YOUNG PATIENTS

2003 ◽  
Vol 85 (7) ◽  
pp. 1366-1379 ◽  
Author(s):  
CHRISTIAN HEISEL ◽  
MAURICIO SILVA ◽  
THOMAS P. SCHMALZRIED
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Young Patients ◽  
Bearing Surface ◽  
Total Hip

Modelling the Femoral Load Transfer in Total Hip Joint Replacement—A Preliminary Study

1983 ◽  
Vol 12 (2) ◽  
pp. 61-64 ◽  
Author(s):  
A W Miles ◽  
D M Dall ◽  
B F Macleland
Keyword(s):  
Hip Replacement ◽  
Load Transfer ◽  
Design Parameters ◽  
Rigid Polyurethane Foam ◽  
Hip Joint Replacement ◽  
Total Hip ◽  
Replacement Model ◽  
Preliminary Study ◽  
Individual Design ◽  
Lower Stem

This paper describes a simple modelling technique used to study the load transfer in the proximal femur in total hip replacement. Model femora cast in a rigid polyurethane foam and prostheses made from various plastics were used to study the effects of individual design parameters on stresses in the femur and prosthesis. The technique was applied in this study to examine the effects on the load transfer of two geometrically identical prostheses simulating two different materials, viz. titanium and chrome cobalt. The model simulating titanium produced more physiological femoral stresses and lower stem stresses. The technique proved to be a simple yet reliable method of studying individual parameters related to the design of femoral prostheses.

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