| 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 |
|
Isaksson, Hanna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Impact of storage time prior to cryopreservation on mechanical properties of aortic homograftscitations
- 2022Crack propagation in articular cartilage under cyclic loading using cohesive finite element modelingcitations
- 2022Fracture behavior of a composite of bone and calcium sulfate/hydroxyapatitecitations
- 2022Fracture behavior of a composite of bone and calcium sulfate/hydroxyapatitecitations
- 2021Dual modality neutron and x-ray tomography for enhanced image analysis of the bone-metal interfacecitations
- 2021Dual modality neutron and x-ray tomography for enhanced image analysis of the bone-metal interfacecitations
- 2020Spatio-temporal evolution of hydroxyapatite crystal thickness at the bone-implant interfacecitations
- 2020Bone Damage Evolution Around Integrated Metal Screws Using X-Ray Tomographycitations
- 2020Comparison of small‐angle neutron and X‐ray scattering for studying cortical bone nanostructurecitations
- 2020The influence of microstructure on crack propagation in cortical bone at the mesoscalecitations
- 2019An interface damage model that captures crack propagation at the microscale in cortical bone using XFEMcitations
- 2019Crack propagation in cortical bone is affected by the characteristics of the cement line : a parameter study using an XFEM interface damage modelcitations
- 2019Fracture strength of the proximal femur injected with a calcium sulfate/hydroxyapatite bone substitutecitations
- 2017Neutron tomographic imaging of bone-implant interfacecitations
- 2016Differences in acoustic impedance of fresh and embedded human trabecular bone samples - scanning acoustic microscopy and numerical evaluationcitations
- 2016Bone mineral crystal size and organization vary across mature rat bone cortexcitations
- 2016How accurately can subject-specific finite element models predict strains and strength of human femora? Investigation using full-field measurementscitations
Places of action
| Organizations | Location | People |
|---|
article
Fracture behavior of a composite of bone and calcium sulfate/hydroxyapatite
Abstract
<p>Calcium sulfate/hydroxyapatite (CaS/HA) biomaterials have been investigated for use in several orthopedic applications. However, the mechanical interactions between the composite of CaS/HA and bone at the microscale are still unknown. The aim of this study was to determine if and how augmentation with CaS/HA alters the fracture behavior of bone. Eleven cylinders of trabecular bone were drilled from human femoral heads and cleaned from bone marrow. Among them, five cylinders were injected with CaS/HA to generate composite specimens, while the others were kept intact. One extra specimen of pure CaS/HA was prepared. All specimens were compressed in situ using synchrotron X-ray tomography and imaged at ∼2% strain intervals. Structural properties were calculated from the images in unloaded state and mechanical properties were determined from the load-curves. CaS/HA alone displayed the highest peak force and stiffness and the lowest strain at fracture. All composite specimens had a higher peak force than the pure bone specimens and the composite specimens had higher toughness than the pure CaS/HA specimen. Furthermore, the fracture behavior was analyzed further to characterize the local deformations. The pure bone specimens presented damage in multiple trabeculae and the CaS/HA specimen displayed sharp transition in strains, with low strain in one load step and large cracks in the next. The composite specimens deformed uniformly, with the CaS/HA preventing tissue damage and the bone preventing cracks in the CaS/HA from propagating through the specimen. In conclusion, using tomography with in situ loading, it was possible to show how CaS/HA can help prevent bone tissue damage before global failure.</p>