| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Krawczyńska, Agnieszka
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2020In vitro evaluation of degradable electrospun polylactic acid/bioactive calcium phosphate ormoglass scaffoldscitations
- 20203D DIC-assisted residual stress measurement in 316 LVM steel processed by HE and HPTcitations
- 2019New approach to amorphization of alloys with low glass forming ability via selective laser meltingcitations
- 2019Mechanical properties and corrosion resistance of hydrostatically extruded 316 LVM stainless steel after low-temperature plasma nitridingcitations
- 2019Analysis of the microstructure of an AZ31/AA1050/AA2519 laminate produced using the explosive-welding methodcitations
- 2018Microstructural characterization and residual stress distribution in a nanostructured austenitic stainless steelcitations
- 2018Formation of the Nitrided Layers on an Austenitic Stainless Steel with Different Grain Structurescitations
- 2017New synthesis route to decorate Li 4 Ti 5 O 12 grains with GO flakescitations
- 2017Mechanical properties and corrosion resistance of ultrafine grained austenitic stainless steel processed by hydrostatic extrusioncitations
- 2017Microstructure and mechanical properties investigation of CP titanium processed by selective laser melting (SLM)citations
- 2017Analysis of microstructural aspects of a hip stem failure made of the REX 734 stainless steelcitations
- 2017The effect of current types on the microstructure and corrosion properties of Ni/NANOAl2O3 composite coatings
- 2016STEM study of Li4Ti5O12 anode material modified with Ag nanoparticlescitations
- 2014Strength of nanostructured austenitic steel 316LN at cryogenic temperaturescitations
- 2013Strain relaxation and grain growth in 316LVM stainless steel annealed under pressure
Places of action
| Organizations | Location | People |
|---|
article
Analysis of microstructural aspects of a hip stem failure made of the REX 734 stainless steel
Abstract
In this work we described the microstructure, mechanical and corrosion investigations of two total hip prostheses with cemented stems that were broken after relatively short period of implantation, ~ 3.5 years. The fractured stems were made of the REX 734 austenitic stainless steel, a modified version of the 316 L(V) grade. The REX 734 steel has, in comparison to the 316 L steel, lower content of nickel and higher amount of chromium, nitrogen and niobium. Broken metal endoprosthesis were removed from female patients with body mass index of 27.1 and 29.7. No discontinuity and defects on the prosthesis surface were observed. Radiographs obtained after failure revealed a lack of a cement fixation at the proximal part of the stem. Thus, a probable reason of the failure was a stem loosening at proximal part caused by differences of a tissue density of the proximal and distal part of femoral bone. Comprehensive microstructure observations revealed that in both cases the fatigue fracture was initiated at an anteromedial part of the stems. Failure initiation of both stems could be initiated by large niobium carbides detected in the microstructure of the stems. Despite coarse NbC precipitations, size up to 0.3 μm, the microstructure and corrosion properties of the broken stems made of REX 734 steel fulfil ISO (ASTM) standards.