Biomechanical Principles Used in Finite Element Analysis for Proximal Humeral Fractures with Locking Plates

Mendoza-Muñoz, Ismael; González-Ángeles, Alvaro; Siqueiros-Hernández, Miriam; Reyes, Mildrend Ivett Montoya

doi:10.12659/mst.907350

Cited by 4 publications

(7 citation statements)

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“…Perren stated that bone anisotropy is not significant in ORIF, so it can be ignored when treating bone as a material [55]. The literature corroborates this, showing that using isotropic material properties for the bone is sufficient for analysis under simple loads [3,5,[23][24][25][26]28,30,54,56].…”

Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 83%

“…The Poisson ratio is the same for almost all metals as for bone, and the literature shows that the preferred value for the Poisson ratio is ν = 0.3 [3,5,20,23,24,26,28,31,33,42,54,56,58]. Notwithstanding the agreement between studies, a few have proposed a "slightly" different Poisson's ratio around ν = 0.3 for bone tissues.…”

Section: From Reality To 3d Model: Mechanical Properties Assignmentmentioning

confidence: 96%

“…As explained before, we can find the thickest cortical bone in the proximal humerus diaphysis. Therefore, to convert the vBMD values to the elastic modulus, there are some equations in the literature; for example, the most referenced equation [30,31,33,42] is from the Dragomir-Daescu et al study [56], which is based on research by Morgan et al [61], where the ρ (gHA/cm 3 ) is the equivalent density to the BMD value obtained from the QTC, as seen in Equation ( 2).…”

Section: Cortical Bonementioning

confidence: 99%

See 2 more Smart Citations

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Castro-Franco¹,

Mendoza-Muñoz²,

González-Ángeles³

et al. 2022

Which Factors Contribute to Innovative Performance? A Case Study Applied to the Food and Beverage Industry

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Proximal humerus fractures are becoming more common due to the aging of the population, and more related scientific research is also emerging. Biomechanical studies attempt to optimize treatments, taking into consideration the factors involved, to obtain the best possible treatment scenario. To achieve this, the use of finite element analysis (FEA) is necessary, to experiment with situations that are difficult to replicate, and which are sometimes unethical. Furthermore, low costs and time requirements make FEA the perfect choice for biomechanical studies. Part of the complete process of an FEA involves three-dimensional (3D) bone modeling, mechanical properties assignment, and meshing the bone model to be analyzed. Due to the lack of standardization for bone modeling, properties assignment, and the meshing processes, this article aims to review the most widely used techniques to model the proximal humerus bone, according to its anatomy, for FEA. This study also seeks to understand the knowledge and bias behind mechanical properties assignment for bone, and the similarities/differences in mesh properties used in previous FEA studies of the proximal humerus. The Prime Archives in Applied Sciences 3 www.videleaf.com best ways to achieve these processes, according to the evidence, will be analyzed and discussed, seeking to obtain the most accurate results for FEA simulations.

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Section: Simplification Of the Geometry Characteristics Of The Bonementioning

confidence: 83%

Section: From Reality To 3d Model: Mechanical Properties Assignmentmentioning

confidence: 96%

Section: Cortical Bonementioning

confidence: 99%

See 1 more Smart Citation

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Castro-Franco¹,

Mendoza-Muñoz²,

González-Ángeles³

et al. 2022

Which Factors Contribute to Innovative Performance? A Case Study Applied to the Food and Beverage Industry

View full text Add to dashboard Cite

show abstract

“…In this work, the effectiveness of the medial screw support for complex fractures at the osteoporotic proximal humerus of the elderly was investigated through computer modeling, focusing on the cases where two routinely encountered external forces were applied to the implanted region. Additionally, we offer visual and quantitative evidence to predict the fixation condition of the LCP in elderly patients, taking advantage of the 3D model virtually realizing real biomechanical structures of the proximal humerus [ 30 ] and considering the physical properties of osteoporotic bones. We have also guaranteed the reproducibility of the results by providing the details of the experimental conditions and of the process of reconstructing 3D computer models from raw data and material information of the LCP system.…”

Section: Discussionmentioning

confidence: 99%

Effect of Calcar Screw in Locking Compression Plate System for Osteoporotic Proximal Humerus Fracture: A Finite Element Analysis Study

Lee

Kim

et al. 2022

BioMed Research International

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This study proposes a finite element analysis (FEA) model for complex fractures at the osteoporotic proximal humerus and investigates the relevance of using a calcar screw in surgical treatments using this model. Two types of three-dimensional (3D) fracture models of patients with osteoporotic humerus were constructed reflecting the mechanical properties of the osteoporotic humerus, such as the Young's modulus and Poisson's ratio, and two load conditions mimicking the clinical environment were applied for simulation. Using the 3D models and the conditions, the FEA software calculated the concentration and distribution of stresses developing in the humerus, locking compression plate (LCP), and screws. Then, we evaluated and predicted the fixed state of a LCP system depending on whether the maximum stress value exceeded tensile strength. When axial force was applied, insertion of the calcar screw led to significant reduction of stress applied on screws in the fracture model having a medial gap by approximately 61%, from 913.20 MPa to 351.84 MPa. Based on the results, it was clearly confirmed that using of calcar screws improved the stability of a three-part fractures and simultaneously reinforced medial support.

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“…The research run by Röderer et al [51] is generally used to validate compression studies, as well as the study by Unger et al [52], who physically tested a fractured proximal humerus with ORIF under a bending and axial rotation test setup. The review carried out by Mendoza-Muñoz et al [53] shows another perspective of FEA studies of the proximal humerus with locking plates.…”

Section: -Part Compressionmentioning

confidence: 99%

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Castro-Franco¹,

Mendoza-Muñoz²,

González-Ángeles³

et al. 2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Proximal humerus fractures are becoming more common due to the aging of the population, and more related scientific research is also emerging. Biomechanical studies attempt to optimize treatments, taking into consideration the factors involved, to obtain the best possible treatment scenario. To achieve this, the use of finite element analysis (FEA) is necessary, to experiment with situations that are difficult to replicate, and which are sometimes unethical. Furthermore, low costs and time requirements make FEA the perfect choice for biomechanical studies. Part of the complete process of an FEA involves three-dimensional (3D) bone modeling, mechanical properties assignment, and meshing the bone model to be analyzed. Due to the lack of standardization for bone modeling, properties assignment, and the meshing processes, this article aims to review the most widely used techniques to model the proximal humerus bone, according to its anatomy, for FEA. This study also seeks to understand the knowledge and bias behind mechanical properties assignment for bone, and the similarities/differences in mesh properties used in previous FEA studies of the proximal humerus. The best ways to achieve these processes, according to the evidence, will be analyzed and discussed, seeking to obtain the most accurate results for FEA simulations.

show abstract

Biomechanical Principles Used in Finite Element Analysis for Proximal Humeral Fractures with Locking Plates

Cited by 4 publications

References 0 publications

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

Effect of Calcar Screw in Locking Compression Plate System for Osteoporotic Proximal Humerus Fracture: A Finite Element Analysis Study

Trends in the Characterization of the Proximal Humerus in Biomechanical Studies: A Review

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