Universiti Teknologi Malaysia Institutional Repository

Interface micromotion of cementless hip arthroplasty: Collared vs non-collared stems

Abdul-Kadir, Mohammed Rafiq and Kamsah, Nazri and Mohlisun, N. (2008) Interface micromotion of cementless hip arthroplasty: Collared vs non-collared stems. In: IFMBE Proceedings. Springer Verlag, Germany, 428 -432. ISBN 978-354069138-9

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Official URL: http://dx.doi.org/10.1007/978-3-540-69139-6-109


Cemented and cementless total hip arthroplasty has been used extensively for treatment of hip joint disorder, with the latter gaining popularity due to conservation of bone mass. Major problem associated with the cementless design is the lack of stability. Several design features were introduced to provide the much needed stability for bone integration. These include fins, fiber mesh, beads, indentations and collars. The use of collar has been a subject of controversy with mixed reports of clinical outcomes. In this study, the effectiveness of collar in terms of providing stability was analysed using finite element method. Three dimensional model of a human femur was constructed from CT dataset and hip arthroplasty was simulated. With an applied joint contact load simulating physiological gait, micromotion of the implant relative to the bone was calculated via an experimentally validated algorithm. Results showed that collar did not improve stability of the whole stem but only around the medial calcar region.

Item Type:Book Section
Additional Information:ISBN: 978-354069138-9; 4th Kuala Lumpur International Conference on Biomedical Engineering 2008, Biomed 2008; Kuala Lumpur; 25 June 2008 through 28 June 2008
Uncontrolled Keywords:cementless hip arthroplasty, collar, hip stem, micromotion
Subjects:Q Science > Q Science (General)
Divisions:?? FBSK ??
ID Code:12603
Deposited By: Liza Porijo
Deposited On:14 Jun 2011 05:23
Last Modified:14 Jun 2011 05:23

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