Static, fatigue and stress-shielding analysis of the use of different PEEK based materials as hip stem implants
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Mustafa Guven Gok
Abstract
There is a possibility that hip joints may become dysfunctional due to age, wear or some accidents, and in this case they need to be replaced with hip implants. However, after conventional hip stem implantation, the load transferred to the bone usually decreases due to the high stiffness of the metallic (most commonly Ti6Al4V, CoCr or stainless steel) hip stem implant, and as a result, mineral loss occurs in the bone which weakens. On the other hand, PEEK is an advantageous material with its low cost, ease of production, corrosion resistance and biocompatibility. More importantly, it has the potential to be a good alternative to metallic materials in load-bearing bone replacements, thanks to its mechanical properties and density close to that of the bone. In this study, hip stem implants having three different commercial PEEK materials and four different metallic main spar designs were modeled. Their behavior under static and dynamic loading conditions was analyzed according to ASTM-F2996-20 and ISO-7206-4:2010 standard test methods, and the stress-shielding effect of hip stems modeled as implanted into the femur was simulated using ANSYS commercial finite element analysis software. According to the results, it was observed that CFP based hip stem models meet the five million life time criteria and increase the stress on the femur bone by up to 57%.
Acknowledgments
The author would like to thank the Istanbul Technical University Information Technologies Directorate for permission the use of the softwares.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- Research Articles
- Influences on the mechanical properties of SRCs in a combined compacting and back injecting process
- Static, fatigue and stress-shielding analysis of the use of different PEEK based materials as hip stem implants
- Numerical simulation and experimental analysis for evaluating warpage of a 3D thin-walled polymeric part using the injection compression molding process
- A molecular dynamics study on the mechanical properties of defective CNT/epoxy nanocomposites using static and dynamic deformation approaches
- Microstructural, functional groups and textural analysis of expanded polyethylene reinforced polystyrene composites with recycled aluminium as ternary component
- Investigation of the adhesive strength in a combined compaction and back-injection process to produce back-injected self-reinforced composites (SRCs)
- Extraction and characterization of Alfa fibers and their use to produce Alfa/wool woven fabrics for composite reinforcement
- Effect of rubber reinforcement with filler on extrusion flow and extrudate swell
- News
- PPS News
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Influences on the mechanical properties of SRCs in a combined compacting and back injecting process
- Static, fatigue and stress-shielding analysis of the use of different PEEK based materials as hip stem implants
- Numerical simulation and experimental analysis for evaluating warpage of a 3D thin-walled polymeric part using the injection compression molding process
- A molecular dynamics study on the mechanical properties of defective CNT/epoxy nanocomposites using static and dynamic deformation approaches
- Microstructural, functional groups and textural analysis of expanded polyethylene reinforced polystyrene composites with recycled aluminium as ternary component
- Investigation of the adhesive strength in a combined compaction and back-injection process to produce back-injected self-reinforced composites (SRCs)
- Extraction and characterization of Alfa fibers and their use to produce Alfa/wool woven fabrics for composite reinforcement
- Effect of rubber reinforcement with filler on extrusion flow and extrudate swell
- News
- PPS News
