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

[1]

Arsiwala A.S., Shukla V., FE Modelling of Two Femur Fixation Implants, (2021)

[2]

Bagheri M.A., Houri G., Design and numerical investigation of an adaptive intramedullary nail with a novel interlocking mechanism, J of Comp Design and Eng, 7, 6, pp. 722-735, (2020)

[3]

Cheung G., Zalzal P., Bhandari M., Spelt J.K., Papini M., Finite element analysis of a femoral retrograde intramedullary nail subject to gait loading, Med Eng Phys, 26, pp. 93-108, (2004)

[4]

Crandall S.H., Dahl N.C., Lardner T.J., An Introduction to the Mechanics of Solids, Second Edition with SI Units, Mcgraw Hill International Editions, (1978)

[5]

Cristofolini L., Viceconti M., Toni A., Giunti A., Influence of thigh muscles on the axial strains in a proximal femur during early stance in gait, Technical Note, J Biomech, 28, 5, pp. 617-624, (1995)

[6]

Cui Y., Et al., Characterization of novel intramedullary nailing method for treating femoral shaft fracture through finite element analysis, Exp Ther Med, 20, pp. 748-753, (2020)

[7]

Gdoutos E.E., Raftopoulos D.D., Baril J.D., A critical review of the biomechanical stress analysis of the human femur, Biomaterials, 3, 1, pp. 2-8, (1982)

[8]

Henak C.R., Et al., Finite Element Prediction of Transchondral Stress and Strain in the Human Hip, 136, pp. 021021-021021, (2014)

[9]

Huiskes R., On the modelling of long bones in structural analyses, J Biomech, 15, 1, pp. 65-69, (1982)

[10]

Lotz J.C., Et al., Fracture prediction for the proximal femur using finite element models: part I - linear analysis, J Biomech Eng, 113, 4, pp. 353-360, (1991)

← 1 2 3 →