Development and in vitro validation of a simplified numerical model for the design of a biomimetic femoral stem

Jetté, Bruno; Braïlovski, Vladimir; Simoneau, Charles; Dumas, Mathieu; Terriault, Patrick

doi:10.1016/j.jmbbm.2017.10.019

Cited by 41 publications

(44 citation statements)

References 66 publications

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“…The force–displacement data are tracked along a specific point “A” on the surface of the femur as depicted in Figure A. The force–displacement data from the experimental work are mapped and plotted against the force–displacement diagram obtained from our conducted simulation, as shown in Figure B. It is evident that both the experimental and the FE simulation force–displacement profiles are very close to each other and show strong agreement.…”

Section: Resultsmentioning

confidence: 82%

“…The implanted femur bone model is validated using the experimental published work . A femur bone is implanted with a fully dense Ti stem and simulated using ABAQUS 2017 under a static body weight load of 3000 N, which is applied in 10 increments.…”

Section: Resultsmentioning

confidence: 99%

“…Validation of FE model of femur‐stem assembly. A, tracked point “A” for force‐displacement data, B, force‐displacement curves obtained from the FE model and the published work, C, Von Mises stress in dense and HGP stems of different porosities…”

Section: Resultsmentioning

confidence: 99%

“…The middle part of the femoral stem is modeled as solid and employed with the effective Young’s moduli of the BCC porous structures to reduce the computational cost . The total length of the functionally graded porous section is 80 mm, and it is divided into 8 thin layers of 10 mm each, as shown in Figure B.…”

Section: Methodsmentioning

confidence: 99%

“…The middle part of the stem (functionally graded section) is modeled as a solid part with the properties of graded BCC porous cellular structures, while the bottom part is modeled as a solid part with the properties of a BCC cellular structure of 70% porosity. Solid sections with effective material properties of BCC cellular structures of different porosities are assigned to the stem to reduce the computational time as done and validated by . The epoxy (tube filled with resin) is modeled as an isotropic material with an elastic modulus of E = 3.7 GPa.…”

Section: Methodsmentioning

confidence: 99%

See 4 more Smart Citations

Finite element study of functionally graded porous femoral stems incorporating body‐centered cubic structure

et al. 2019

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The mismatch between stiffness of the femoral dense stem and host bone causes complications to patients, such as aseptic loosening and bone resorption. Three‐dimensional finite‐element models of homogeneous porous (HGP) and functionally graded porous (FGP) stems incorporating body‐centered cubic (BCC) structures are proposed in this article as an alternative to the dense stems. The relationship between the porosity and strut thickness of the BCC structure was developed to construct the finite‐element models. Three levels of porosities (20%, 50%, and 80%) were modeled in HGP and FGP stems. The porosity of the stems was decreased distally according to the sigmoid function (n = 0.1, n = 1 and n = 10) with 3 grading exponents. The results showed that FGP stems transferred 120%‐170% higher stresses to the femur (Gruen zone 7) as compared to the solid stem. Conversely, the stresses in HGP and FGP stems were 12%‐34% lower than the dense stem. The highest micromotions (105‐147 µm) were observed for stems of 80% overall porosity, and the lowest (42‐46 µm) was for stems of 20% overall porosity. Finally, FGP stems with a grading exponent of n = 10 resulted in an 11%‐28% reduction in micromotions.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Finite element study of functionally graded porous femoral stems incorporating body‐centered cubic structure

et al. 2019

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Unveiling additively manufactured cellular structures in hip implants: a comprehensive review

Dias,

da Silva,

Gasik

et al. 2023

Int J Adv Manuf Technol

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The prospect of improved quality of life and the increasingly younger age of patients benefiting from Total Hip Arthroplasty will soon lead to the landmark of 10 million interventions per year worldwide. More than 10% of these procedures lead to significant bone resorption, increasing the need for revision surgeries. Current research focuses on the development of hip implant designs to achieve a stiffness profile closer to the natural bone. Additive Manufacturing has emerged as a viable solution by offering promising results in the fabrication of implant architectures based on metallic cellular structures that have demonstrated their capacity to replicate bone behavior mechanically and biologically. Aiming to offer an up-to-date overview of titanium cellular structures in hip implants, for both acetabular and femoral components, produced by Additive Manufacturing, including its design intricacies and performance, this comprehensive review meticulously examines the historical development of hip implants, encompassing commercial solutions and innovative attempts. A broad view of the practical applications and transformative potential of hip implants incorporating cellular structures is presented, aiming to outline opportunities for innovation.

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The Influence of Static Load and Sideways Impact Fall on Extramedullary Bone Plates Used to Treat Intertrochanteric Femoral Fracture: A Preclinical Strength Assessment

et al. 2022

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Development and in vitro validation of a simplified numerical model for the design of a biomimetic femoral stem

Cited by 41 publications

References 66 publications

Finite element study of functionally graded porous femoral stems incorporating body‐centered cubic structure

Finite element study of functionally graded porous femoral stems incorporating body‐centered cubic structure

Unveiling additively manufactured cellular structures in hip implants: a comprehensive review

The Influence of Static Load and Sideways Impact Fall on Extramedullary Bone Plates Used to Treat Intertrochanteric Femoral Fracture: A Preclinical Strength Assessment

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