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Title: An approximate model for cancellous bone screw fixation
Authors: Brown, CJ
Sinclair, RA
Day, A
Hess, B
Procter, P
Keywords: Cancellous bone screw;Augmentation;Calcium phosphate cement;Finite element modelling;Screw fixation
Issue Date: 2013
Publisher: Taylor & Francis
Citation: Computer Methods in Biomechanics and Biomedical Engineering, 16(4), 443 - 450, 2013
Abstract: This paper presents a finite element (FE) model to identify parameters that affect the performance of an improved cancellous bone screw fixation technique, and hence potentially improve fracture treatment. In cancellous bone of low apparent density, it can be difficult to achieve adequate screw fixation and hence provide stable fracture fixation that enables bone healing. Data from predictive FE models indicate that cements can have a significant potential to improve screw holding power in cancellous bone. These FE models are used to demonstrate the key parameters that determine pull-out strength in a variety of screw, bone and cement set-ups, and to compare the effectiveness of different configurations. The paper concludes that significant advantages, up to an order of magnitude, in screw pull-out strength in cancellous bone might be gained by the appropriate use of a currently approved calcium phosphate cement.
Description: This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2013 Taylor & Francis.
ISSN: 1025-5842
Appears in Collections:Mechanical and Aerospace Engineering
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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