Design, analysis and verification of a knee joint oncological prosthesis finite element model
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem, validační studie
PubMed
25212118
DOI
10.1016/j.compbiomed.2014.08.021
PII: S0010-4825(14)00223-6
Knihovny.cz E-zdroje
- Klíčová slova
- Endoprosthesis, Finite element method, Finite element model, Knee joint, Knee-bending, Oncological implant,
- MeSH
- algoritmy MeSH
- analýza metodou konečných prvků MeSH
- analýza selhání vybavení MeSH
- biologické modely * MeSH
- design s pomocí počítače MeSH
- kolenní kloub patofyziologie MeSH
- kosterní svaly patofyziologie MeSH
- lidé MeSH
- mechanický stres MeSH
- modul pružnosti MeSH
- nádory kostí patofyziologie chirurgie MeSH
- pevnost v tahu MeSH
- pevnost v tlaku MeSH
- počítačová simulace MeSH
- protetické vybavení metody MeSH
- protézy - design MeSH
- protézy kolene * MeSH
- šlachy patofyziologie MeSH
- software MeSH
- svalová kontrakce MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- validační studie MeSH
BACKGROUND: The aim of this paper was to design a finite element model for a hinged PROSPON oncological knee endoprosthesis and to verify the model by comparison with ankle flexion angle using knee-bending experimental data obtained previously. METHOD: Visible Human Project CT scans were used to create a general lower extremity bones model and to compose a 3D CAD knee joint model to which muscles and ligaments were added. Into the assembly the designed finite element PROSPON prosthesis model was integrated and an analysis focused on the PEEK-OPTIMA hinge pin bushing stress state was carried out. To confirm the stress state analysis results, contact pressure was investigated. The analysis was performed in the knee-bending position within 15.4-69.4° hip joint flexion range. RESULTS: The results showed that the maximum stress achieved during the analysis (46.6 MPa) did not exceed the yield strength of the material (90 MPa); the condition of plastic stability was therefore met. The stress state analysis results were confirmed by the distribution of contact pressure during knee-bending. CONCLUSION: The applicability of our designed finite element model for the real implant behaviour prediction was proven on the basis of good correlation of the analytical and experimental ankle flexion angle data.
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