Influence of the Near-Cortical Over-Drilling Technique on the Mechanical Behaviour of Locking Plate Constructs Applied in Maned Wolf's Femur

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dc.contributor.authorSiqueira, Rafael C. [UNESP]
dc.contributor.authorRahal, Sheila C. [UNESP]
dc.contributor.authorMesquita, Luciana R. [UNESP]
dc.contributor.authorVoorwald, Fabiana A.
dc.contributor.authorFernandes, Martin F. [UNESP]
dc.contributor.authorTosati, Marcos
dc.contributor.authorRibeiro, Celso R.
dc.contributor.authorScorsato, Paulo S.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFederal University of Viçosa
dc.contributor.institutionSAMT - Structural Solutions for Finite Elements
dc.contributor.institutionMechanical and Metallography Testing Laboratory - LEMM
dc.contributor.institutionUniversity of Marília (UNIMAR)
dc.date.accessioned2023-03-01T20:47:24Z
dc.date.available2023-03-01T20:47:24Z
dc.date.issued2022-01-01
dc.description.abstractObjective The aim of this study was to evaluate the influence of near-cortical over-drilling holes on the mechanical behaviour of locking plate constructs applied in maned wolf's femur by using mechanical testing and finite element method (FEM). Study Design Seven pairs of adult maned wolves (Chrysocyon brachyurus) femur bones were randomly distributed into four groups. In all groups, a 3.5 mm locking compression plate, designed with 12 combi-holes and one locked, was applied to the lateral surface of the femur. G1 (n = 4) received bicortical locking screws placed in holes 1, 3, 5, 8, 10 and 12. In G2 (n = 5), the plate was applied as used in G1, but the application of the locked screws involved the near-cortical over-drilling technique. In G3 (n = 4), the plate was applied as used in G2, but the size of the near-cortical over-drilling was larger. The combi-holes 6 and 7 were maintained over a 10 mm fracture gap without screws. All constructs were tested for failure in the axial load. The axial load was applied eccentrically to the femoral head. Results Statistical differences were observed in the maximum load with G3 > G1 and G3 > G2, and in the deflection with G2 > G1 and G2 > G3. The FEM showed the lowest total displacement of the bone-plate constructs as well as of the plate in G1 compared with G2 and G3. Conclusion The near-cortical over-drilling technique used in unstable fractures induced in the maned wolf's femur showed by static axial compression test that maximum load and deflection are dependent on drill hole size induced in the near-cortex. Based on FEM, the lowest total displacement of the bone-plate constructs was observed in Group 1.en
dc.description.affiliationDepartment of Veterinary Surgery and Anesthesiology School of Veterinary Medicine and Animal Science São Paulo State University (UNESP), Rubião Júnior s/n, SP
dc.description.affiliationDepartment of Veterinary Surgery Federal University of Viçosa, MG
dc.description.affiliationDepartment of Materials and Technology São Paulo State University (UNESP), Guaratinguetá, São Paulo
dc.description.affiliationSolution Engineering Manager SAMT - Structural Solutions for Finite Elements
dc.description.affiliationMechanical and Metallography Testing Laboratory - LEMM, Jaú, SP, Rua Luiz Pengo 150
dc.description.affiliationDepartment of Veterinary Surgery and Anesthesiology School of Veterinary Medicine and Animal Science University of Marília (UNIMAR), Marília, SP
dc.description.affiliationUnespDepartment of Veterinary Surgery and Anesthesiology School of Veterinary Medicine and Animal Science São Paulo State University (UNESP), Rubião Júnior s/n, SP
dc.description.affiliationUnespDepartment of Materials and Technology São Paulo State University (UNESP), Guaratinguetá, São Paulo
dc.identifierhttp://dx.doi.org/10.1055/s-0042-1748859
dc.identifier.citationVeterinary and Comparative Orthopaedics and Traumatology.
dc.identifier.doi10.1055/s-0042-1748859
dc.identifier.issn0932-0814
dc.identifier.scopus2-s2.0-85131357452
dc.identifier.urihttp://hdl.handle.net/11449/241107
dc.language.isoeng
dc.relation.ispartofVeterinary and Comparative Orthopaedics and Traumatology
dc.sourceScopus
dc.subjectcanid
dc.subjectfinite element method
dc.subjectfracture
dc.subjectlocked plate
dc.subjectnear-cortex overdrilling
dc.titleInfluence of the Near-Cortical Over-Drilling Technique on the Mechanical Behaviour of Locking Plate Constructs Applied in Maned Wolf's Femuren
dc.typeArtigo
unesp.author.orcid0000-0002-4683-0478[1]
unesp.author.orcid0000-0002-2861-910X[8]

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Artigos - Cirurgia e Anestesiologia Veterinária - FMVZ
Artigos - Materiais e Tecnologia - FEG