Fatigue failure of the sliding hip screw - clinical and biomechanical analysis
Language English Country Great Britain, England Media print-electronic
Document type Case Reports, Journal Article
- Keywords
- Sliding hip screw, fatigue failure, finite element method, non-union,
- MeSH
- Biomechanical Phenomena MeSH
- Hip Fractures diagnostic imaging physiopathology MeSH
- Bone Screws * MeSH
- Middle Aged MeSH
- Humans MeSH
- Stress, Mechanical * MeSH
- Prosthesis Failure * MeSH
- Aged, 80 and over MeSH
- Models, Theoretical MeSH
- Materials Testing MeSH
- Check Tag
- Middle Aged MeSH
- Humans MeSH
- Male MeSH
- Aged, 80 and over MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Case Reports MeSH
The study was aimed at the clinical and biomechanical analyses of the sliding hip screw breakage with the use of finite element method. We have identified two patients with the sliding screw breakage. In the first patient, the biomechanical analysis revealed the reduced stress values σHMH not exceeding the yield limit or strength limit of the implant. The yield limit was exceeded in second one. Clinical and biomechanical analyses have demonstrated that adherence to technical requirements of the appropriate osteosynthesis implementation is the principal condition of timely healing since it prevents the material failure.
b Orthopaedic Clinic University Hospital Martin Martin Slovac Republic
c Department of Orthopaedics Hospital Pelhrimov Pelhrimov Czech Republic
Department of Technical Studies College of Polytechnics Jihlava Czech Republic
Jessenius Faculty of Medicine in Martin Comenius University in Bratislava Martin Slovac Republic
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