Evaluation of stress and displacement in hip prostheses with incorporating hole and fin features using finite element method

Abdullah, Haslina and Talib, Norfazillah and Zakaria, Mohamad Shukri (2025) Evaluation of stress and displacement in hip prostheses with incorporating hole and fin features using finite element method. Journal Of Engineering Science And Technology, 20 (1). pp. 151-164. ISSN 1823-4690

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Abstract

The typical distribution of stress in the femoral bone undergoes substantial changes following total hip arthroplasty (THA). With the introduction of a hip prosthesis, it bears a share of the load, resulting in reduced stress in certain areas of the bone and this will lead to stress shielding. Several factors influence stress shielding, including the geometry and cross-section of the hip prosthesis. Additionally, the displacement of the implant is also studied to identify the effects of additional features on displacement. This is because displacement measures the movements of the implant under physiological load. Therefore, in this study, three prostheses were constructed. The dimension of the prosthesis was based on the size of the patients’ bone. Two of them had additional fin and hole features in the proximal part of the prosthesis. Finite element analysis was implemented to examine stress distribution under normal walking conditions. Based on simulations, it was found that the addition of features to the basic design increased stress values in the fin and hole regions at the proximal part of the prosthesis. Additions of fins and holes features have caused increments of stress of almost 170% and 85%, respectively as compared to conventional implant. However, for the displacement, it was found that the addition of holes features at the proximal area decreases the displacement by approximates 62%. As conclusion, this demonstrated that the cross-section and geometry of the prosthesis significantly affected stress and displacement distribution. At the same time, it showed that the finite element method could predict the performance of hip implants.

Item Type:	Article
Uncontrolled Keywords:	Finite element method, Hip arthroplasty, Hip prosthesis, Stress distribution.
Divisions:	Faculty Of Mechanical Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	20 Jul 2026 08:29
Last Modified:	20 Jul 2026 08:29
URI:	http://eprints.utem.edu.my/id/eprint/30039
Statistic Details:	View Download Statistic

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