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Development of a computer simulation tool for application in adolescent spinal deformity surgery

Little, J. Paige & Adam, Clayton J. (2010) Development of a computer simulation tool for application in adolescent spinal deformity surgery. In Bello, Fernando & Cotin, Stephane (Eds.) Biomedical Simulation : Proceedings of 5th International Symposium on Biomedical Simulation, Springer, Phoenix Convention Center, Arizona, pp. 90-97.

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Abstract

Scoliosis is a three-dimensional spinal deformity which requires surgical correction in progressive cases. In order to optimize correction and avoid complications following scoliosis surgery, patient-specific finite element models (FEM) are being developed and validated by our group. In this paper, the modeling methodology is described and two clinically relevant load cases are simulated for a single patient. Firstly, a pre-operative patient flexibility assessment, the fulcrum bending radiograph, is simulated to assess the model's ability to represent spine flexibility. Secondly, intra-operative forces during single rod anterior correction are simulated. Clinically, the patient had an initial Cobb angle of 44 degrees, which reduced to 26 degrees during fulcrum bending. Surgically, the coronal deformity corrected to 14 degrees. The simulated initial Cobb angle was 40 degrees, which reduced to 23 degrees following the fulcrum bending load case. The simulated surgical procedure corrected the coronal deformity to 14 degrees. The computed results for the patient-specific FEM are within the accepted clinical Cobb measuring error of 5 degrees, suggested that this modeling methodology is capable of capturing the biomechanical behaviour of a scoliotic human spine during anterior corrective surgery.

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ID Code: 30142
Item Type: Conference Paper
Keywords: anterior scoliosis surgery, spinal deformity, patient-specific finite element model, surgery simulation, adolescent idiopathic scoliosis
DOI: 10.1007/978-3-642-11615-5_10
ISBN: 9783642116148
ISSN: 1611-3349
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomechanical Engineering (090302)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 Springer
Copyright Statement: This is the author-version of the work. Conference proceedings published, by Springer Verlag, will be available via Lecture Notes in Computer Science http://www.springer.de/comp/lncs/
Deposited On: 03 Feb 2010 08:04
Last Modified: 01 Mar 2012 00:17

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