Fatigue fracture of a cemented Omnifit CoCr femoral stem: implant and failure analysis
| Autor: | Sanjai Shukla, Lisa A. Pruitt, Michael D. Ries, Noah Bonnheim, Hannah M. Gramling, Beatrice Iliescu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
030222 orthopedics
Materials science business.industry Stem fracture Metallurgy Dentistry Case Report Fatigue fracture 02 engineering and technology Femoral stem Stem Cell Research Intergranular fracture 03 medical and health sciences lcsh:RD701-811 020303 mechanical engineering & transports 0302 clinical medicine 0203 mechanical engineering lcsh:Orthopedic surgery Fracture (geology) Orthopedics and Sports Medicine Surgery Total hip arthroplasty Implant business |
| Zdroj: | Arthroplasty Today Arthroplasty Today, Vol 3, Iss 4, Pp 234-238 (2017) Arthroplasty today, vol 3, iss 4 |
| ISSN: | 2352-3441 |
| Popis: | A cemented, cast CoCr alloy, Omnifit Plus femoral stem was retrieved following mid-stem fracture after 24 years in vivo. The patient was an active 55-year-old male with a high body mass index (31.3) and no traumatic incidents before stem fracture. Fractographic and fatigue-based failure analyses were performed to illuminate the etiology of fracture and retrospectively predict the device lifetime. The fracture surfaces show evidence of a coarse grain microstructure, intergranular fracture, and regions of porosity. The failure analysis suggests that stems with similar metallurgical characteristics, biomechanical environments, and in vivo durations may be abutting their functioning lifetimes, raising the possibility of an increased revision burden. Keywords: Fatigue fracture, Total hip arthroplasty, Stem fracture |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|