Patient-specific computational biomechanics for simulating adolescent scoliosis surgery: predicted vs clinical correction for a preliminary series of six patients
Little, Paige & Adam, Clayton (2010) Patient-specific computational biomechanics for simulating adolescent scoliosis surgery: predicted vs clinical correction for a preliminary series of six patients. International Journal for Numerical Methods in Biomedical Engineering, 27(3), pp. 347-356.
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Description
Scoliosis is a spinal deformity that requires surgical correction in progressive cases. In order to optimize surgical outcomes, patient-specific finite element models are being developed by our group. In this paper, a single rod anterior correction procedure is simulated for a group of six scoliosis patients. For each patient, personalised model geometry was derived from low-dose CT scans, and clinically measured intra-operative corrective forces were applied. However, tissue material properties were not patient-specific, being derived from existing literature. Clinically, the patient group had a mean initial Cobb angle of 47.3 degrees, which was corrected to 17.5 degrees after surgery. The mean simulated post-operative Cobb angle for the group was 18.1 degrees. Although this represents good agreement between clinical and simulated corrections, the discrepancy between clinical and simulated Cobb angle for individual patients varied between -10.3 and +8.6 degrees, with only three of the six patients matching the clinical result to within accepted Cobb measurement error of +-5 degrees. The results of this study suggest that spinal tissue material properties play an important role in governing the correction obtained during surgery, and that patient-specific modelling approaches must address the question of how to prescribe patient-specific soft tissue properties for spine surgery simulation.
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ID Code: | 41000 | ||||
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Item Type: | Contribution to Journal (Journal Article) | ||||
Refereed: | Yes | ||||
ORCID iD: |
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Measurements or Duration: | 10 pages | ||||
Keywords: | Computational Biomechanics, Finite Element, Scoliosis, Spinal Deformity, Surgical Planning | ||||
DOI: | 10.1002/cnm.1422 | ||||
ISSN: | 2040-7939 | ||||
Pure ID: | 32229645 | ||||
Divisions: | Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering Past > Institutes > Institute of Health and Biomedical Innovation Past > QUT Faculties & Divisions > Science & Engineering Faculty Current > Research Centres > Australian Research Centre for Aerospace Automation |
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Copyright Owner: | Consult author(s) regarding copyright matters | ||||
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||
Deposited On: | 06 Apr 2011 21:58 | ||||
Last Modified: | 10 Feb 2025 18:53 |
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