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.

scholarly journals Total hip replacement in femoral head osteonecrosis

2020 ◽  
Vol 17 (2) ◽  
pp. 203-210
Author(s):  
A. E. Murzich ◽  
N. S. Serdiuchenko ◽  
V. A. Rabtsevich
Keyword(s):  
Femoral Head ◽  
Hip Replacement ◽  
Friction Pair ◽  
Young Patients ◽  
Clinical Results ◽  
Surgical Approaches ◽  
Total Hip ◽  
Femoral Head Osteonecrosis ◽  
Level Of Activity ◽  
Revision Operations

The experience of hip replacement in young patients with osteonecrosis of the femoral head was analyzed in the article. The results of operations in the osteonecrosis group and osteoarthritis group in 3 years and 7 months after operations were compared. In 97.5 % of cases, cementless fixation implants with a ceramic on ceramic friction pair (45 %) and ceramic on polyethylene friction pair (45 %) were used. Surgical approaches by Moore, Hardinge and AMIS technique were applied. The clinical results of operations in the studied groups were similar, but the survival rate of endoprostheses in the osteonecrosis group was 91.5 %, and in the osteoarthritis group 97.2 %. In the osteonecrosis group an increased frequency of complications (dislocation of the endoprosthesis head, periprosthetic fracture, periprosthetic infection) and revision operations were observed. Our results show the influence of risk factors, concomitant diseases, the level of activity of young patients on the long-term total hip arthroplasty result.

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
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