High resolution X-ray imaging of bone-implant interface by large area flat-panel detector
- NázevTitle
- High resolution X-ray imaging of bone-implant interface by large area flat-panel detectorHigh resolution X-ray imaging of bone-implant interface by large area flat-panel detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- D. Kytýř, O. Jiroušek, J. Dammer
- DOIDOI
- 10.1088/1748-0221/6/01/C01038
- Časopis / citaceJournal / citation
- Journal of Instrumentation. 2011, 1(C01038), 1-5. ISSN 1748-0221.
- RokYear
- 2011
- JazykLanguage
- eng
- WoSWoS
- 000291345600043
- ScopusScopus
- 2-s2.0-79952671851
- RIVRIV
- RIV/68407700:21670/11:00188819!RIV12-MSM-21670___
- ProjektProject
- Fundamentální experimenty ve fyzice mikrosvětaFundamental Experiments in Physics of Microworld; Využití radionuklidů a ionizujícího zářeníApplication of radionuclides and ionising radiation
AbstraktAbstract
The aim of the research was to investigate the cemented bone-implant interface behavior (cement layer degradation and bone-cement interface debonding) with emphasis on imaging techniques suitable to detect the early defects in the cement layer. To simulate in vivo conditions a human pelvic bone was implanted with polyurethane acetabular cup using commercial acrylic bone cement. The implanted cup was then loaded in a custom hip simulator to initiate fatigue crack propagation in the bone cement. The pelvic bone was then repetitively scanned in a micro-tomography device. Reconstructed tomography images showed failure processes that occurred in the cement layer during the first 250,000 cycles. A failure in cemented acetabular implant - debonding, crumbling and smeared cracks - has been found to be at the bone-cement interface. Use of micro-focus source and high resolution flat panel detector of large physical dimensions allowed to reconstruct the micro-structural models suitable for invest
The aim of the research was to investigate the cemented bone-implant interface behavior (cement layer degradation and bone-cement interface debonding) with emphasis on imaging techniques suitable to detect the early defects in the cement layer. To simulate in vivo conditions a human pelvic bone was implanted with polyurethane acetabular cup using commercial acrylic bone cement. The implanted cup was then loaded in a custom hip simulator to initiate fatigue crack propagation in the bone cement. The pelvic bone was then repetitively scanned in a micro-tomography device. Reconstructed tomography images showed failure processes that occurred in the cement layer during the first 250,000 cycles. A failure in cemented acetabular implant - debonding, crumbling and smeared cracks - has been found to be at the bone-cement interface. Use of micro-focus source and high resolution flat panel detector of large physical dimensions allowed to reconstruct the micro-structural models suitable for invest