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Biomechanical analysis of femoral stem design features in physiological and osteoporotic bone during different static loading conditions - In silico study

  • As society continues to age, the implementation of hip stems increases every year. However, there are a variety of different hip stem designs. The aim of this project is to analyze which hip stem design implemented in a femur is most effective under different static loading conditions such as gait and sideways falling. In addition, a four-point-bending test was carried out. Therefore, theAs society continues to age, the implementation of hip stems increases every year. However, there are a variety of different hip stem designs. The aim of this project is to analyze which hip stem design implemented in a femur is most effective under different static loading conditions such as gait and sideways falling. In addition, a four-point-bending test was carried out. Therefore, the tech-niques were simulated in silico by FEA with Abaqus/CAE 2019. A short stem, a straight stem and an anatomical stem were tested. All prosthesis are cementless press-fit stems. Each hip stem was examined in physiological and osteoporotic bone applying all three tests. To compare the stems the tests were also applied on a native bone model as a reference. Boundary conditions were used in order to simulate the tests. The average von Mises stress, tension, compression and the risk of fracture were extracted and compared. Biomechanical results show that the straight stem induces higher von Mises stresses compared to the anatomical stem. The risk of fracture is higher for osteo-porotic bone than for physiological bone. However, there is no risk of fracture as all the results are below the risk of value.show moreshow less

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Metadaten
Document Type:Bachelor Thesis
Title (English):Biomechanical analysis of femoral stem design features in physiological and osteoporotic bone during different static loading conditions - In silico study
Author:Juljana Ditting
Advisor:Christian Wetzel, Bernardo Innocenti
Year of Publication:2022
Granting Institution:Hochschule Offenburg
Page Number:XI, 56
Language:English
Institutes:Fakultät Maschinenbau und Verfahrenstechnik (M+V)
Institutes:Abschlussarbeiten / Bachelor-Studiengänge / BM
DDC classes:600 Technik, Medizin, angewandte Wissenschaften
Tag:Biomechanical; hip stem
Open Access: Closed 
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International