scholarly journals Utilização de prótese ortopédica em bezerro / Use of orthopedic prosthesis in calf

2020 ◽  
Vol 3 (4) ◽  
pp. 3357-3368
Author(s):  
Adecir Cardoso da Silva Junior ◽  
Tiago Luís Eilers Treichel ◽  
Tales Dias do Prado ◽  
Marcelo Augusto Rozan dos Santos ◽  
Cristiane Raquel Dias Francischini ◽  
...  
Keyword(s):  
Orthopedic Prosthesis

scholarly journals Investigation of the Temperature-Related Wear Performance of Hard Nanostructured Coatings Deposited on a S600 High Speed Steel

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 332 ◽  
Author(s):  
Eleonora Santecchia ◽  
Marcello Cabibbo ◽  
Abdel Hamouda ◽  
Farayi Musharavati ◽  
Anton Popelka ◽  
...  
Keyword(s):  
Physical Vapor Deposition ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Hard Coatings ◽  
Wear Performance ◽  
Metal Machining ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Orthopedic Prosthesis

Thin hard coatings are widely known as key elements in many industrial fields, from equipment for metal machining to dental implants and orthopedic prosthesis. When it comes to machining and cutting tools, thin hard coatings are crucial for decreasing the coefficient of friction (COF) and for protecting tools against oxidation. The aim of this work was to evaluate the tribological performance of two commercially available thin hard coatings deposited by physical vapor deposition (PVD) on a high speed tool steel (S600) under extreme working conditions. For this purpose, pin-on-disc wear tests were carried out either at room temperature (293 K) or at high temperature (873 K) against alumina (Al2O3) balls. Two thin hard nitrogen-rich coatings were considered: a multilayer AlTiCrN and a superlattice (nanolayered) CrN/NbN. The surface and microstructure characterization were performed by optical profilometry, field-emission gun scanning electron microscopy (FEGSEM), and energy dispersive spectroscopy (EDS).

In-111-labeled leukocyte scintigraphy in suspected orthopedic prosthesis infection: comparison with other imaging modalities.

Radiology ◽  
1988 ◽  
Vol 168 (1) ◽  
pp. 235-239 ◽  
Author(s):  
J E Magnuson ◽  
M L Brown ◽  
M F Hauser ◽  
T H Berquist ◽  
R H Fitzgerald ◽  
...  
Keyword(s):  
Imaging Modalities ◽  
Prosthesis Infection ◽  
Leukocyte Scintigraphy ◽  
Orthopedic Prosthesis

scholarly journals Editorial Response: Orthopedic Prosthesis Salvage

1999 ◽  
Vol 29 (2) ◽  
pp. 296-297 ◽  
Author(s):  
Michael R. Keating ◽  
James M. Steckelberg
Keyword(s):  
Orthopedic Prosthesis

scholarly journals Characterization and Accelerated Ageing of UHMWPE Used in Orthopedic Prosthesis by Peroxide

Materials ◽  
2009 ◽  
Vol 2 (2) ◽  
pp. 562-576 ◽  
Author(s):  
Magda Rocha ◽  
Alexandra Mansur ◽  
Herman Mansur
Keyword(s):  
Accelerated Ageing ◽  
Orthopedic Prosthesis

Investigation for the Effects of Newly Designed Hip Prosthesis on Crack Propagation Using Probabilistic Methodology

2020 ◽  
Vol 10 (7) ◽  
pp. 951-956
Author(s):  
Yaşar Şen
Keyword(s):  
Hip Replacement ◽  
Hip Prosthesis ◽  
Relative Displacement ◽  
Prosthesis Design ◽  
Functional Requirements ◽  
Mathematical Methods ◽  
Cement Interface ◽  
High Fatigue ◽  
Optimization Methodology ◽  
Orthopedic Prosthesis

In orthopedic prosthesis design, finite element method is one of the commonly used mathematical methods for performing structural analyzes and reducing test costs before it is applied to the patient. Surgeons and engineers should work together to design reliable durable and hip replacement. Desirable functional requirements for prosthesis design include high fatigue life, small relative displacement between the prosthesis-cement interface, and reduced stress on the bone and prosthesis. For this purpose, the progression of the fracture was calculated by applying the scenario of the presence of crack in the bone cement of the designed prosthesis using optimization methodology. The same conditions were analyzed in commercially available Charnley type prosthesis and the results were compared. When the obtained results are examined, it is seen that the newly designed prosthesis is more effective than the Charnley type prosthesis.

Influence of Heat Treatment on Fatigue Resistance of Sintered Ti 35Nb 7Zr 5Ta β Alloy

2014 ◽  
Vol 936 ◽  
pp. 1290-1297
Author(s):  
Alexander H. Franco ◽  
Cosme R.M. Silva ◽  
Palloma V. Muterlle ◽  
Jorge L.A. Ferreira ◽  
José A. Araújo
Keyword(s):  
Fatigue Strength ◽  
Grain Boundaries ◽  
Fatigue Resistance ◽  
Mean Stress ◽  
High Oxygen Content ◽  
Bending Fatigue ◽  
Four Point Bending ◽  
Α Phase ◽  
Density Analysis ◽  
Orthopedic Prosthesis

Mean stress on fatigue strength of Ti-35Nb-7Zr-5Ta, used in the manufacture of orthopedic prosthesis, was evaluated. Samples of Ti-35Nb-7Zr-5Ta were pressureless sintered and tested using microhardness (Vickers) and four point bending fatigue apparatus. Characterization was carried out using optical microscopy, scanning electron microscopy, EDS analysis, oxygen analysis and density. The density analysis shows almost 98% of density and microscopy reveals some precipitates of α phase and presumably ω phase at the grain and grain boundaries. The bending fatigue resistance limit reached (Se (106) 88 MPa), due to, presumably, the influence of coarse α phase precipitates at grain boundaries as well as the high oxygen content in the material after sintering (0.96 %). In this study, Kwofie model best explains the influence of mean stress on fatigue strength of this alloy.

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