The effect of locked screw angulation on the biomechanical properties of the S.P.S. Free-Block plate

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMerino, M. K A
dc.creatorRahal, Sheila Canevese
dc.creatorRibeiro, C. R.
dc.creatorPadovani, C. R.
dc.date2014-05-27T11:28:43Z
dc.date2016-10-25T18:45:54Z
dc.date2014-05-27T11:28:43Z
dc.date2016-10-25T18:45:54Z
dc.date2013-03-27
dc.date.accessioned2017-04-06T02:17:40Z
dc.date.available2017-04-06T02:17:40Z
dc.identifierVeterinary and Comparative Orthopaedics and Traumatology, v. 26, n. 2, p. 117-122, 2013.
dc.identifier0932-0814
dc.identifierhttp://hdl.handle.net/11449/74884
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74884
dc.identifier10.3415/VCOT-12-03-0045
dc.identifierWOS:000316922300008
dc.identifier2-s2.0-84875293658
dc.identifier0000-0002-9211-4093
dc.identifierhttp://dx.doi.org/10.3415/VCOT-12-03-0045
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895643
dc.descriptionObjectives: Among the locked internal fixators is one denominated S.P.S. (Synthesis Pengo System) Free-Block, which was designed with a locking ring that allows the screw to be locked and positioned obliquely. Due to the paucity of biomechanical studies on this system, the present work aimed to evaluate the influence of locked screw angulation on the resistance of the S.P.S. Free--Block plate. Methods: Forty synthetic bone cylinders with 10 mm fracture gap were used. Forty seven-hole 3.5 mm stainless steel plates (two AO-like dynamic compression holes and five locked holes) were assembled according to the orientation of the locked screws: mono cortical screws were positioned at 90° to the long axis of the cylinder (Group 1), and monocortical screws were positioned at 70° to its cylinder long axis (Group 2). In both groups, AO-like dynamic compression hole screws were positioned bicortically and neutrally. For each group, six specimens were tested until failure, three in bending and three in compression, to determine the loads for fatigue testing. Subsequently, for each group, 14 specimens were tested for failure --seven by bending and seven in compression. Results: No significant failure differences were observed between Groups 1 and 2 under static-loading or fatigue test. Clinical significance: In a fracture gap model the orientation of the locked monocortical screws did not show any influence on the mechanical performance of the S.P.S. Free-Block to tests of axial compression and four-point bending. © Schattauer 2013.
dc.languageeng
dc.relationVeterinary and Comparative Orthopaedics and Traumatology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBone
dc.subjectFatigue testing
dc.subjectPlate
dc.subjectScrew
dc.subjectStatic testing
dc.subjectanimal
dc.subjectanimal disease
dc.subjectbiomechanics
dc.subjectbone plate
dc.subjectbone screw
dc.subjectmaterials testing
dc.subjectmechanical stress
dc.subjectmechanics
dc.subjectAnimals
dc.subjectBiomechanics
dc.subjectBone Plates
dc.subjectBone Screws
dc.subjectMaterials Testing
dc.subjectMechanics
dc.subjectStress, Mechanical
dc.titleThe effect of locked screw angulation on the biomechanical properties of the S.P.S. Free-Block plate
dc.typeOtro


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