Finite Element Analysis of Modified Hip Implant Surfaces

2021 ◽  
pp. 582-588
Author(s):  
Aleksandra Vulović ◽  
Nenad Filipović
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Hip Implant

scholarly journals Experimental Investigation on Hip Implant Materials Development through Analytical and Finite Element Analysis: 3D Modelled Computed Tomography

2021 ◽  
Vol 12 (3) ◽  
pp. 4103-4125
Keyword(s):  
Computed Tomography ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Peak Stress ◽  
Element Analysis ◽  
Materials Development ◽  
Analytical Analysis ◽  
Hip Implant ◽  
Material Development ◽  
The Finite Element Analysis

Biomechanics is the interdisciplinary area comprising biomedical and mechanical domain, continuations in research of alternative and sustainable materials, which refers to the mechanical examine. This current work focuses on hip implant material development through analytical and finite element analysis. The femur bone head is 3D modeled through computed tomography (CT) images extracted data and modeled in SOLIDWORKS. The analytical analysis is performed on the femur head through Hertzian theory. The finite element analysis (FEA) (static structural analysis) is carried out in the ANSYS 19.2. The materials considered for the FEA are NbTiZrMo alloy, PEEK and CFR-PEEK for the hip implant. The analytical analysis is performed for eight different human routine activities, and the highest peak stress value is obtained for walking fast. The peak stress values obtained in FEA for CFR-PEEK material implant are lower than the maximum peak stress obtained by analytical analysis. The stress value obtained for CFR-PEEK material is somewhat higher than PEEK, but the contact pressure for PEEK material is way higher than CFR-PEEK material implant. So, it is concluded that the CFR-PEEK material is the ideal alternative as compared to other materials.

0312 Finite Element Analysis on Short Stem Hip Implant

2013 ◽  
Vol 2013.50 (0) ◽  
pp. 031201-031202
Author(s):  
Keisuke SASAGAWA ◽  
Masafumi ODA ◽  
Keiko KATSUYAMA ◽  
Katsuya NAKATA ◽  
Toshiaki HARA ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Short Stem ◽  
Element Analysis ◽  
Hip Implant

scholarly journals Optimized trapezoidal-shaped hip implant for total hip arthroplasty using finite element analysis

2020 ◽  
Vol 7 (1) ◽  
pp. 1719575
Author(s):  
Chethan K N ◽  
Mohammad Zuber ◽  
Shyamasunder Bhat N ◽  
Satish Shenoy B ◽  
Duncan Shepherd
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Element Analysis ◽  
Hip Implant ◽  
Total Hip

scholarly journals Finite Element Analysis of Orthopedic Hip Implant with Functionally Graded Bioinspired Lattice Structures

Biomimetics ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 44 ◽  
Author(s):  
Nikolaos Kladovasilakis ◽  
Konstantinos Tsongas ◽  
Dimitrios Tzetzis
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Topology Optimization ◽  
Lattice Structure ◽  
Functionally Graded ◽  
Manufacturing Cost ◽  
Lattice Structures ◽  
Element Analysis ◽  
Hip Implant

The topology optimization (TO) process has the objective to structurally optimize products in various industries, such as in biomechanical engineering. Additive manufacturing facilitates this procedure and enables the utility of advanced structures in order to achieve the optimal product design. Currently, orthopedic implants are fabricated from metal or metal alloys with totally solid structure to withstand the applied loads; nevertheless, such a practice reduces the compatibility with human tissues and increases the manufacturing cost as more feedstock material is needed. This article investigates the possibility of applying bioinspired lattice structures (cellular materials) in order to topologically optimize an orthopedic hip implant, made of Inconel 718 superalloy. Lattice structures enable topology optimization of an object by reducing its weight and increasing its porosity without compromising its mechanical behavior. Specifically, three different bioinspired advanced lattice structures were investigated through finite element analysis (FEA) under in vivo loading. Furthermore, the regions with lattice structure were optimized through functional gradation of the cellular material. Results have shown that optimal design of hip implant geometry, in terms of stress behavior, was achieved through functionally graded lattice structures and the hip implant is capable of withstanding up to two times the in vivo loads, suggesting that this design is a suitable and effective replacement for a solid implant.

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