Stress and strain distribution in femoral heads for hip resurfacing arthroplasty with different materials: A finite element analysis

Vogel, Danny; Wehmeyer, Merle; Kebbach, Maeruan; Heyer, Horst; Bader, Rainer

doi:10.1016/j.jmbbm.2020.104115

Cited by 29 publications

(18 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specimens were loaded at a crosshead speed of 0.5 mm/min until failure in a universal testing machine (EZ-LX, Shimadzu, Tokyo, Japan). The Poisson ratio of the zirconia grades was set as 0.3, whereas that of ATZ was set to 0.27, following previous studies [14,24]. The flexural strength results were statistically analyzed using Weibull analysis.…”

Section: Flexural Strengthmentioning

confidence: 99%

Additively Manufactured Zirconia for Dental Applications

et al. 2021

View full text Add to dashboard Cite

We aimed to assess the crystallography, microstructure and flexural strength of zirconia-based ceramics made by stereolithography (SLA). Two additively manufactured 3 mol% yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP: LithaCon 3Y 230, Lithoz; 3D Mix zirconia, 3DCeram Sinto) and one alumina-toughened zirconia (ATZ: 3D Mix ATZ, 3DCeram Sinto) were compared to subtractively manufactured 3Y-TZP (control: LAVA Plus, 3M Oral Care). Crystallographic analysis was conducted by X-ray diffraction. Top surfaces and cross-sections of the subsurface microstructure were characterized using scanning electron microscopy (SEM). Biaxial flexural strength was statistically compared using Weibull analysis. The additively and subtractively manufactured zirconia grades revealed a similar phase composition. The residual porosity of the SLA 3Y-TZPs and ATZ was comparable to that of subtractively manufactured 3Y-TZP. Weibull analysis revealed that the additively manufactured LithaCon 3Y 230 (Lithoz) had a significantly lower biaxial flexural strength than 3D Mix ATZ (3D Ceram Sinto). The biaxial flexural strength of the subtractively manufactured LAVA Plus (3M Oral Care) was in between those of the additively manufactured 3Y-TZPs, with the additively manufactured ATZ significantly outperforming the subtractively manufactured 3Y-TZP. Additively manufactured 3Y-TZP showed comparable crystallography, microstructure and flexural strength as the subtractively manufactured zirconia, thus potentially being a good option for dental implants.

show abstract

Section: Flexural Strengthmentioning

confidence: 99%

Additively Manufactured Zirconia for Dental Applications

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The aim was to predict the reaction of the baseplate in the testing process and the loading of the indenter, because the baseplate is the first part that holds the load of the indenter [28]. The parameters generated from this simulation are displacement, maximum stress, and safety factors [29][30][31][32][33][34]. The displacement value in design 1 and design 2 has points with the same upward and downward trends.…”

Section: Performance Of the Baseplatementioning

confidence: 99%

Design development and technical analysis of an auto checking hardness machine: A study case of the hardness tester HR-522 series

et al. 2021

View full text Add to dashboard Cite

A hardness-checking machine is a crucial tool in engineering study, especially in the mechanical and manufacturing process. It usually used to measure, calibrate, and standardize the quality of the product. It is based on the field problem in Akebono Brake Astra Indonesia for using more manual tools to achieve product demands. It is considering those issues, the development of a modified hardness checking tool from manual operation to automatic operation. Using automatic operation is useful in time and savings for other manual tools. The automatic tool applies the 3-axes system mechanism using Festo linear actuator with the servo motor. The testing capacity of automatic devices is equal to more manual devices. The frame of the auto-checking hardness machine is assessed by applying load variations. From the other similar work of auto checking hardness machine, this paper provides the comparison of various aluminum frame types based on different tensile strength and cross-sectional area values. The other analysis is calculating the base plate for hardness testing. There are 9 points of testing to calculate the use of linear guides for the base plate. The results are the excellent value of tensile strength has good results of displacement and maximum stress.

show abstract

“…9–11 The fracture risk was low for zirconia toughened alumina and alumina toughened zirconia (ATZ) ceramics, 11,9 whereas there were concerns regarding HRA implants comprised of aluminum oxide. 10 Another point of concern that was investigated in metal and ceramic HRA alike was stress shielding, 10,12–15 which occurs when the implant stiffness exceeds the stiffness of the adjacent bone, preventing the transfer of the physiological load to the bone stock. 16 The bone experiences less stress compared to the natural state in some regions.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of the primary fixation stability of uncemented ceramic hip resurfacing implants

Vogel

Henke

Haenel

et al. 2022

Proc Inst Mech Eng H

Self Cite

View full text Add to dashboard Cite

Hip resurfacing arthroplasty is associated with increased frictional moments compared to standard heads owing to their large diameter. High frictional moments may harbor the risk of the implant loosening if the frictional moments exceed the fixation stability of the hip resurfacing arthroplasty. Therefore, the aim of this experimental study was to evaluate the fixation stability of ceramic hip resurfacing implants through a turn-off test. The test specimens, made of alumina toughened zirconia (ATZ) ceramics with an inner titanium-coated surface and square base bodies for better application to the test setup, were pushed on artificial bone materials until a predefined seating depth was achieved. Thereafter, the specimens were turned off from the artificial bone material by using a lever-arm and the turn-off moments were calculated. The density of the artificial bone material utilized (15 and 25 pcf), the press-fit (0.4 and 0.8 mm) and the size of the test specimens varied. The push-on forces ranged from 0.6 ± 0.1 kN to 5.6 ± 0.5 kN depending on the press-fit and artificial bone material. The turn-off moments relied on the respective press-fit, artificial bone material and size of the specimen. They belonged between the range of 8.5 ± 0.4 Nm and 105.4 ± 0.2 Nm. Most of the previously described frictional moments are lower compared to the turn-off moments determined in this study. However, in the worst-case scenario, the turn-off moments of the hip resurfacing implants may be reduced, especially when the adjacent bone stock has a low mineral density.

show abstract

Stress and strain distribution in femoral heads for hip resurfacing arthroplasty with different materials: A finite element analysis

Cited by 29 publications

References 63 publications

Additively Manufactured Zirconia for Dental Applications

Additively Manufactured Zirconia for Dental Applications

Design development and technical analysis of an auto checking hardness machine: A study case of the hardness tester HR-522 series

Experimental evaluation of the primary fixation stability of uncemented ceramic hip resurfacing implants

Contact Info

Product

Resources

About