Universiti Teknologi Malaysia Institutional Repository

Three-dimensional modelling and finite element analysis of an ankle external fixator

Ramlee, Muhammad Hanif Anif and Abdul Kadir, Mohammed Rafiq and Harun, Habibollah (2014) Three-dimensional modelling and finite element analysis of an ankle external fixator. Advanced Materials Research, 845 . pp. 183-188. ISSN 1022-6680

Full text not available from this repository.

Official URL: https://dx.doi.org/10.4028/www.scientific.net/AMR....

Abstract

The use of ankle external fixator to treat pilon fracture Type III is popular amongst surgeons as it can reduce complications such as non-union and mal-union. Even though configurations of the connecting bars are important, the material also plays a major factor for a successful outcome. In this paper, the Delta external fixator with simulated ankle pilon fractures Type III were modelled and analysed under two different materials; titanium alloy and stainless steel. The finite element model includes tibia, fibula, talus, calcaneus, cuboid, navicular, three cuneiforms and five metatarsals bone. To simulate the pilon fractures Type III, a cutting segment was utilised. The ligaments were assigned with linear spring properties and cartilages were modelled using Mooney-Rivlin hyper-elastic behaviour. The Delta external fixator was designed using a three-dimensional software with two different material properties - titanium alloy and stainless steel. High von Mises stress concentrated at the pin-bone interface with the highest value observed for the titanium fixation. The results also showed less deformation for the stainless steel compared to titanium.

Item Type:Article
Uncontrolled Keywords:finite element analysis, pilon fractures
Subjects:Q Science > QH Natural history
Divisions:Biosciences and Medical Engineering
ID Code:63082
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:14 Jun 2017 11:09
Last Modified:14 Jun 2017 11:09

Repository Staff Only: item control page