Finite element modelling and analysis of a new cemented hip prosthesis

Kayabaşı, Oğuz; Erzincanlı, Fehmi

doi:10.1016/j.advengsoft.2005.09.003

Cited by 49 publications

(37 citation statements)

References 9 publications

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“…The safety factor of a hip implant is usually between 1.25~2.16. 4 However, Corentec Co., Ltd., the manufacturer of the P-type model and joint research partner in this study, does not usually consider the safety factor in its design process, because, other than a hip implant fracture resulting from dissociation or poor fixation, a hip implant hardly fractures once it is fitted.…”

Section: Studying Customized Hip Implant Stem Design Parametersmentioning

confidence: 97%

Study of optimized hip implant development for hip implant in total hip replacement

Kim¹,

Chu²,

Han³

et al. 2011

Int. J. Precis. Eng. Manuf.

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A hip implant re-operation is usually related to the service life of the component, as determined by its material properties, or a loosening of the hip implant resulting from a poor alignment with adjacent bone tissues. These issues invariably arise from the use of standardized products even though each patient differs in terms of anatomical parameters of their hips. To deal with such challenges, customized hip implants are needed that are designed to optimize the alignment with the hip according to the anatomical differences of individual patients. Therefore, this study presents an optimal joint restoration system optimized to the needs of the individual user as regards developing treatment technology to restore the function of an aged joint. A hip implant usually consists of a body and neck, thus, among 15 anatomical basic parameters of the human femur, 8 are selected as hip implant design input parameters to focus on the most critical elements for a hip implant in the case of a total hip replacement. In addition, specific design input parameters are proposed including a wiring hole and distal slotted part, and analyzed using a finite element analysis method. The anatomical parameters in relation to a variation of the neck length are also analyzed in the same manner. To confirm the design parameters enabling normal hip implantation, a maximum neck shaft angle and length threshold model is implemented on the basis of the statistical average femoral configuration of Koreans and verified by a FEM (Finite Element Method) fatigue analysis. An analysis protocol aligned with international specifications as applied and a threshold for each of the aforementioned parameters set up to derive optimal design parameters. Finally, as a pre-operation planning tool, the parameters of choice are extracted from an X-ray femur image and reconstructed into a 2D/3D CAD model using a customized hip implant design software program, and the model stability is verified using a static FEM.

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Section: Studying Customized Hip Implant Stem Design Parametersmentioning

confidence: 97%

Study of optimized hip implant development for hip implant in total hip replacement

Kim¹,

Chu²,

Han³

et al. 2011

Int. J. Precis. Eng. Manuf.

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“…In complete walking cycle, hip joint rotates through 80°. In the present study the radius of hip joint head equal to 20.25 mm is considered [9].…”

Section: Wear Modelmentioning

confidence: 99%

“…1a) was generated in Pro/E WF4 as per dimensions in [9] and it was saved in IGES format, which was then imported in HyperMesh TM V9 for further processing. All the solid parts were then meshed with ten node solid (tet10) elements with global mesh size of 5 mm.…”

Section: Fe Model Of Primary Femoral Componentsmentioning

confidence: 99%

“…Fixed connectivity was defined among bone cement, cortical bone and trabecular bone to model this sub-assembly as femur. Hip stem, bone cement, trabecular bone and socket were defined as a linear isotropic materials [9], properties of which are listed in Table 1. Cortical bone is defined as a linear orthotropic material with Ex = Ey = 11.5 GPa, Ez = 17 GPa, l xy = 0.51, l yz = l xz = 0.31, Gxy = 3.6 GPa, and Gxz = Gyz = 3.3 GPa.…”

Section: Fe Model Of Primary Femoral Componentsmentioning

confidence: 99%

“…This method is widely used as a time saving and cost efficient computing method in biomedical engineering [4]. In the present research, a prosthesis [9] has been modeled as an assembly of monoblock acetabular cup and monoblock femur (femoral head ? femoral stem).…”

Section: Introductionmentioning

confidence: 99%

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Life Estimation of Hip Joint Prosthesis

Desai

Hirani

Chawla

2014

J. Inst. Eng. India Ser. C

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Finite element analysis of newly developed hip prosthesis

Namasivayam

Andriyana

Arifin

2022

Materialwissenschaft Werkst

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The present study focuses on the design and finite element analysis of a novel hip prosthesis comprising truss structures intended to equally distribute the stress along the prosthesis. The prosthesis is designed to suit three different inclination angles of 20°, 40° and 60°. The three designs were subjected to loading conditions that emulate walking, jogging, and cycling activities via finite element simulations. Using the von Mises yield criterion and Goodman relation for fatigue, it is found that the safety factor and the life cycle of the proposed prosthesis design was within the acceptable range. Furthermore, the truss structures incorporated in the prosthesis appear to reduce the stress levels in the femur.

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Finite element modelling and analysis of a new cemented hip prosthesis

Cited by 49 publications

References 9 publications

Study of optimized hip implant development for hip implant in total hip replacement

Study of optimized hip implant development for hip implant in total hip replacement

Life Estimation of Hip Joint Prosthesis

Finite element analysis of newly developed hip prosthesis

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