Design And Finite Element Analysis Of HIP Joint Prothesis

Mohd Norhishamudin , Mohamed Azlanudin (2011) Design And Finite Element Analysis Of HIP Joint Prothesis. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Osteoarthritis is the major reason that causes hip problem. According to Cristofolini(1997), there are more than 800 000 hip replacement being implemented worldwide annually. It is important to know the performance of hip prosthesis especially the stability and the longevity. In this project, numerical simulation based on finite element method is used to analyze the mechanical behavior of hip joint prosthesis. Finite element analysis is carried out on three dimensional model of prosthesis on solid models. This is to investigate the behavior of an hip joint prosthesis under loading. Then, the analysis is repeated on two different shape of hip joint, which is of one type of straight (Moore) hip prosthesis and curve (Charnley). Both of the femoral head acetabular cups are remain same on their dimension. After that, the same analysis is carried out with seven type of material that can be categories on three classes which is metal, polymer and ceramic were mechanical properties on every material is not same. The aim is to optimize the design and material selection with have low stress, displacement and wear at a very high fatigue life. Subsequently, the stems that had highest stress and displacement models were the optimized by making a comparison between stem design and material selection for joint prosthesis.

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