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Surgical correction of scoliosis: Numerical analysis and optimization of the procedure

2010-09Journal article Open access
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dc.contributor.authorMadeira, JFA
dc.contributor.authorPina, H. L.
dc.contributor.authorPires, E. B.
dc.contributor.authorMonteiro, Joaquim
dc.date.accessioned2011-11-24T11:53:54Z
dc.date.available2011-11-24T11:53:54Z
dc.date.issued2010-09
dc.description.abstractA previously developed model is used to numerically simulate real clinical cases of the surgical correction of scoliosis. This model consists of one-dimensional finite elements with spatial deformation in which (i) the column is represented by its axis; (ii) the vertebrae are assumed to be rigid; and (iii) the deformability of the column is concentrated in springs that connect the successive rigid elements. The metallic rods used for the surgical correction are modeled by beam elements with linear elastic behavior. To obtain the forces at the connections between the metallic rods and the vertebrae geometrically, non-linear finite element analyses are performed. The tightening sequence determines the magnitude of the forces applied to the patient column, and it is desirable to keep those forces as small as possible. In this study, a Genetic Algorithm optimization is applied to this model in order to determine the sequence that minimizes the corrective forces applied during the surgery. This amounts to find the optimal permutation of integers 1, ... , n, n being the number of vertebrae involved. As such, we are faced with a combinatorial optimization problem isomorph to the Traveling Salesman Problem. The fitness evaluation requires one computing intensive Finite Element Analysis per candidate solution and, thus, a parallel implementation of the Genetic Algorithm is developed.por
dc.identifier.citationMadeira J F A, Pina H L, Pires E B, Monteiro J. Surgical correction of scoliosis: Numerical analysis and optimization of the procedure. International Journal for Numerical Methods in Biomedical Engineering. 2010; 26 (9).por
dc.identifier.issn2040-7939
dc.identifier.urihttp://hdl.handle.net/10400.21/526
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherJohn Wiley & Sons LTDpor
dc.relation.ispartofseries9
dc.subjectScoliosispor
dc.subjectComputational biomechanicspor
dc.subjectFinite element methodpor
dc.subjectGenetic algorithmspor
dc.subjectParallel computationpor
dc.titleSurgical correction of scoliosis: Numerical analysis and optimization of the procedurepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceSussexpor
oaire.citation.endPage1098por
oaire.citation.issue26por
oaire.citation.startPage1087por
oaire.citation.titleInternational Journal for Numerical Methods in Biomedical Engineeringpor
person.familyNameMadeira
person.familyNameMonteiro
person.givenNameJose Firmino Aguilar
person.givenNameJoaquim
person.identifier1017446
person.identifier.ciencia-id6F1E-DCF0-D6EC
person.identifier.ciencia-id4916-EA4B-17D4
person.identifier.orcid0000-0001-9523-3808
person.identifier.orcid0000-0003-1930-9123
person.identifier.ridN-6918-2016
person.identifier.ridJ-8903-2013
person.identifier.scopus-author-id7003405549
person.identifier.scopus-author-id56582664700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationd495619a-a6ab-4ff5-8e70-3a1351f934dc
relation.isAuthorOfPublicationaf7c0e5b-adc6-467f-b817-97fbf260f102
relation.isAuthorOfPublication.latestForDiscoveryaf7c0e5b-adc6-467f-b817-97fbf260f102

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