Finite element analysis of fixed bone plates over fractured femur model

Ahirwar, Harbhajan; Gupta, Vijay; Nanda, Himansu Sekhar

doi:10.1080/10255842.2021.1918123

Cited by 18 publications

(7 citation statements)

References 24 publications

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“…There are several studies involving FEM in Orthopedics in the literature, and the topics involving fracture fixation and treatment of bone tumor lesions are the most addressed. 11 18 19 20 21 22 The FEM, because it is non-invasive, provides important biomechanical information, as well as assists in the development of orthopedic devices and has been more widely used in models of anatomical structures of adults, including for simulations of fixation of unstable subtrochanteric fractures. 20 23 24 Wang et al 20 evaluated the biomechanical performance of three implants to treat unstable subtrochanteric fractures in adults using the FEM and observed that the proximal femoral stem was more stable than the blocked stem and the LISS system ( Less Invasive Reverse System ).…”

Section: Discussionmentioning

confidence: 99%

Estabilidade de osteotomias proximais em modelos do fêmur pediátrico fixadas por hastes intramedulares flexíveis e avaliadas pelo método dos elementos finitos

Cruz,

Santana,

Battaglion

et al. 2024

Rev Bras Ortop (Sao Paulo)

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Resumo Objetivo Avaliar a estabilidade de osteotomias criadas nas regiões subtrocantérica e trocantérica em modelo de fêmur pediátrico, fixadas por hastes intramedulares flexíveis. Método A partir de um modelo de fêmur pediátrico com duas hastes elásticas de titânio, foram obtidos cortes tomográficos que foram convertidos para um modelo tridimensional. Neste modelo foi criado uma malha com elementos tetraédricos, de acordo com o método dos elementos finitos. Foram obtidos três modelos virtuais, e realizadas osteotomias em regiões diferentes: mediodiafisária, subtrocantérica e trocantérica. Foi aplicado um carregamento vertical de 85N no topo da cabeça do fêmur, obtidos os deslocamentos, a tensão máxima e mínima principal e tensão equivalente de Von Mises no implante. Resultados Com o carregamento aplicado foram observados deslocamentos no local da osteotomia de 0,04mm no grupo diafisário, 0,5mm no subtrocantérico e 0,06mm no trocantérico. A tensão máxima principal foi 10,4Pa, 7,52Pa e 26,4Pa nos grupos diafisário, subtrocantérico e trocantérico, respectivamente. Ou seja, a tensão máxima foi em torno de 40% maior no grupo trocantérico, em relação ao diafisário (controle). A face de tensão mínima do osso localizou-se na cortical interna do fêmur. A tensão equivalente de Von Mises nos implantes ocorreu na osteotomia, com valor máximo de 27,6Pa no grupo trocantérico. Conclusão Tanto nas osteotomias no nível trocantérico, quanto subtrocantérico, a estabilidade da fixação foi muitas vezes menor que no modelo diafisário, sugerindo que as hastes intramedulares flexíveis não são implantes adequados para as fixações proximais do fêmur.

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Section: Discussionmentioning

confidence: 99%

Estabilidade de osteotomias proximais em modelos do fêmur pediátrico fixadas por hastes intramedulares flexíveis e avaliadas pelo método dos elementos finitos

Cruz,

Santana,

Battaglion

et al. 2024

Rev Bras Ortop (Sao Paulo)

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“…For instance, the stress-strain distribution is rarely possible to investigate through experiments, but otherwise can be easily predicted through finite element analysis (FEA). 224 Therefore, recently researchers have been adopting computational methods along with 3D printing technology as a new approach for the design and fabrication of scaffolds.…”

Section: Computational Methods For Predicting 3d-printed Scaffold Mec...mentioning

confidence: 99%

“…For instance, the stress–strain distribution is rarely possible to investigate through experiments, but otherwise can be easily predicted through finite element analysis (FEA). 224…”

Section: Computational Methods For Predicting 3d-printed Scaffold Mec...mentioning

confidence: 99%

Engineering biomaterials to 3D-print scaffolds for bone regeneration: practical and theoretical consideration

et al. 2022

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“…Open Knee(s) merepresentasikan biomekanik sendi lutut, sebagaimana dijelaksna oleh peneliti lain [18], dengan menggunakan model biomekanik struktur lutut berdasarkan elemen hexahedron. Pembagian ini bertujuan untuk mempermudah perhitungan numeriknya, semakin kecil elemen yang dihasilkan maka semakin akurat hasil yang akan di dapatkan.…”

Section: Meshingunclassified

Study Analisis Elemen Tetrahedron dan Hexahedron Plat Tulang Material Magnesium AZ31B dengan Finite Element Method (FEM)

Wicaksono

Sukmana²

2022

infotekmesin

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Plat tulang berbahan logam merupakan implan ortopedi yang sangat sering digunakan karena sifat mekaniknya yang kuat. Penelitian ini bertujuan untuk melakukan analisis elemen hingga (FEM) berbasis data uji tekuk tiga titik sesuai standar ASTM F382-99. Dimensi plat yang digunakan adalah 120 mm x 14 mm x 5 mm (panjang x lebar x tebal) dan memiliki 6 dan 10 lubang baut. Beban yang diberikan pada analisis plat sebesar 986,89 N serta ukuran elemen 0,55 mm. Elemen hexahedron memiliki jumlah total elemen 62.179 untuk 6 lubang dan 62.960 elemen untuk 10 lubang. Selanjutnya, jumlah total elemen tetrahedron adalah 63.609 elemen untuk 6 lubang dan 64.822 elemen untuk 10 lubang. Perhitungan FEM untuk plat dengan 6 lubang dan 10 lubang menggunakan elemen hexahedron masing-masing menghasilan total deformasi 6,1963 mm dan 6,7852 mm. Selanjutnya, elemen tetrahedron untuk plat dengan 6 lubang dan 10 lubang menghasilkan total deformasi masing-masing sebesar 6,1762 mm dan 6,7651 mm. Berdasarkan data di atas, dapat disimpulkan bahwa perhitungan FEM untuk sampel plat tulang menggunakan elemen hexahedron lebih akurat dibanding tetrahedron.

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Finite element analysis of fixed bone plates over fractured femur model

Cited by 18 publications

References 24 publications

Estabilidade de osteotomias proximais em modelos do fêmur pediátrico fixadas por hastes intramedulares flexíveis e avaliadas pelo método dos elementos finitos

Estabilidade de osteotomias proximais em modelos do fêmur pediátrico fixadas por hastes intramedulares flexíveis e avaliadas pelo método dos elementos finitos

Engineering biomaterials to 3D-print scaffolds for bone regeneration: practical and theoretical consideration

Study Analisis Elemen Tetrahedron dan Hexahedron Plat Tulang Material Magnesium AZ31B dengan Finite Element Method (FEM)

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