Design process of cementless femoral stem using a nonlinear three dimensional finite element analysis

Baharuddin, Mohd Yusof and Salleh, Sh-Hussain and Zulkifly, Ahmad Hafiz and Lee, Muhammad Hisyam and Mohd Noor, Alias and A Harris, Arief Ruhullah and Abdul Majid, Norazman and Abd Kader, Ab Saman (2014) Design process of cementless femoral stem using a nonlinear three dimensional finite element analysis. BMC Musculoskeletal Disorders, 15 (1(30)). pp. 1-17. ISSN 1471-2474

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Abstract

Background: Minimal available information concer ning hip morphology is the motivation for several researchers to study the difference between Asian and Western populations. Current use of a universal hip stem of variable size is not the best option for all femur types. This present study proposed a new design process of the cementless femoral stem using a three dimensional model which provided more information and accurate analysis compared to conventional methods. Methods: This complete design cycle began with morphological an alysis, followed by femoral stem design, fit and fill analysis, and nonlinear finite element analysis (FEA). Various femur parameters for periosteal and endosteal canal diameters are measured from the osteotomy level to 150 mm below to determine the isthmus position. Results: The results showed better total fit (53.7%) and fill (76.7% ) canal, with more load distributed proximally to prevent stress shielding at calcar region. The stem demonstrated lower displacement and micromotion (less than 40 μ m) promoting osseointegration between the stem–bone and providing primary fixation stability. Conclusion: This new design process could be used as a preclinical assessment tool and will shorten the design cycle by identifying the major steps which must be taken while designing the femoral stem

Item Type:	Article (Journal)
Additional Information:	2397/38204
Uncontrolled Keywords:	Morphology, Femur, Hip replacement, Cementless hip, Finite element analysis
Subjects:	R Medicine > RD Surgery > RD701 Orthopedics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Medicine > Department of Department of Orthopaedics, Traumatology & Rehabilitation
Depositing User:	Sr. Syazwani Othaman
Date Deposited:	12 Sep 2014 10:46
Last Modified:	19 Sep 2017 14:37
URI:	http://irep.iium.edu.my/id/eprint/38204

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