Evaluating the bone load share of a femur-nail set—an analytical stiffness model

被引：0

作者：

Kenedi P.P. ^{[1
,2
]}

de Oliveira e Silva Neto J.R. ^{[1
]}

机构：

[1] PPEMM - Programa de Pós-Graduação em Engenharia Mecânica e Tecnologia de Materiais, CEFET/RJ, Av. Maracanã, 229 - Maracanã, Rio de Janeiro

[2] CCGMEC - Coordenação do Curso em Engenharia Mecânica, CEFET/RJ, Av. Maracanã, 229 - Maracanã, Rio de Janeiro

来源：

Research on Biomedical Engineering | 2024年 / 40卷 / 01期

关键词：

Analytical model; Femur-nailing set; Sharing load; Stiffnesses;

D O I：

10.1007/s42600-024-00344-9

中图分类号：

学科分类号：

摘要：

Purpose: The level of mechanical load that is been effectively shared between the nail and bone is an important consideration to be accessed to perform a good bone remodeling phase. Methods: An analytical model based on the mechanics of solids, estimating the various encompassed stiffnesses, is presented. The cross-section modeling and the detailed load distribution between the bone and nail, through the different bone cross-sections, are provided. The results of the sharing load, and the consequent stress generation, were compared with the Finite Element (FE) model output. Results: The results show that the vertical force bone component is almost three times the transversal force. Also, the bone receives almost the double vertical load if compared to the nail. The bone bending moment components are, at least, one order of magnitude most significant than the torsional moment, and the bone shear stresses were, at least, one order of magnitude less significant than the bone normal stresses. Conclusions: Medical decisions can be improved with the aid of the quantitative results generated by the proposed analytical model, based on mechanical engineering. It can improve, for instance, the selection of the appropriate nail in the function of the patient-specific femur stiffnesses. Also, it can contribute to the post-healing decisions, as to implement or not the nail dynamization. © The Author(s), under exclusive licence to The Brazilian Society of Biomedical Engineering 2024.

引用

页码：213 / 223

页数：10

共 28 条

[11]

Kang N.W.W., Et al., Intramedullary nail: The past, present and the future – a review exploring where the future may lead us, Orthopedic Reviews, 13, 1, (2021)

[12]

Kenedi P.P., Riagusoff I.I.T., Stress development at human femur by muscle forces, J Braz Soc Mech Sci Eng, 37, 1, pp. 31-43, (2015)

[13]

Kenedi P.P., Vignoli L.L., An osteosynthesis plate analytical model, J Braz Soc Mech Sci Eng, 39, pp. 645-659, (2017)

[14]

Kenedi P.P., Neto J.R.O.S., Rodarte R.R.P., On the load share between nailing and bone, XXVI Braz Congr Biomed Eng - IFMBE Proc, 70, 1, pp. 129-135, (2019)

[15]

Kumar K., Prasad R.B., Stress analysis of cortical bone of the human femur, Mater Today: Proc, 44, pp. 2054-2060, (2021)

[16]

Neto J.R.O.S., Análise Da Divisão De Carregamentos Entre Fêmur E Haste Intramedular. Dissertation in Mechanical Engineering (In Portuguese), (2019)

[17]

Raftopoulos D.D., Qassem W., Three-dimensional curved beam stress analysis of the human femur, J Biomed Eng, 9, 4, pp. 356-366, (1987)

[18]

Ramos A., Simoes J.A., Tetrahedral versus hexahedral finite elements in numerical modeling of the proximal femur, Med Eng & Phys, 28, 9, pp. 916-924, (2006)

[19]

Rudman K.E., Aspden R.M., Meakin J.R., Compression or tension? The stress distribution in the proximal femur, Biomed Eng Online, 5, (2006)

[20]

Samiezadeh S., Avval P.T., Fawaz Z., Bougherara H., Biomechanical assessment of composite versus metallic intramedullary nailing system in femoral shaft fractures: a finite element study, Clin Biomech, 29, pp. 803-810, (2014)

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