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dc.contributor.authorFernández-Fairén, Mariano
dc.contributor.authorTorres-Perez, Ana
dc.contributor.authorPérez Antoñanzas, Roman
dc.contributor.authorPunset Fuste, Miquel
dc.contributor.authorMolmeneu Trias, Meritxell
dc.contributor.authorOrtiz-Hernández, Monica
dc.contributor.authorManero Planella, José María
dc.contributor.authorGil Mur, Francisco Javier
dc.date.accessioned2021-01-12T15:35:37Z
dc.date.available2021-01-12T15:35:37Z
dc.date.issued2020
dc.identifier.citationFernández-Fairén, Mariano; Torres-Perez, Ana; Perez, Roman [et al.]. Early short-term postoperative mechanical failures of current ceramic-on-ceramic bearing total hip arthroplasties. Materials, 2020, 13(23), [p. 1-14]. Disponible en: <https://www.mdpi.com/1996-1944/13/23/5318>. Fecha de acceso: 12 ene. 2021. DOI: /10.3390/ma13235318ca
dc.identifier.issn1996-1944ca
dc.identifier.urihttp://hdl.handle.net/20.500.12328/1882
dc.description.abstractAlthough ceramic-on-ceramic (CoC) bearings have been shown to produce the smallest amount of wear volume in vitro as well as in vivo studies when used for total hip arthroplasties (THA), concerns about the failure of these bearing surfaces persist due to early failures observed after short postoperative time. In this study, an exhaustive analysis of the early failure occurred on the new generation of ceramic bearings, consisting of a composite alumina matrix-based material reinforced with yttria-stabilized tetragonal zirconia (Y-TZP) particles, chromium dioxide, and strontium crystals, was performed. For this study, 118 CoC bearings from 117 patients were revised. This article describes a group of mechanical failure CoC-bearing BIOLOX THA hip prosthesis patients without trauma history. The retrieved samples were observed under scanning electron microscopy (SEM), composition was analyzed with energy dispersive X-ray spectroscopy (EDX), and damaged surfaces were analyzed by grazing-incidence X-ray diffraction (GI-XRD) and white light interferometry. In the short term, CoC articulations provided similar mechanical behavior and functional outcome to those in XLPE cases. However, 5% more early mechanical failures cases were observed for the ceramic components. Although the fracture rate of third generation CoC couples is low, the present study shows the need to further improve the third generation of CoC-bearing couples for THA. Despite the improved wear compared to other materials, stress concentrators are sources of initial crack propagation, such as those found in the bore-trunnion areas. Moreover, in view of the evidence observed in this study, the chipping observed was due to the presence of monoclinic phase of the Y-TZP instead of tetragonal, which presents better mechanical properties. The results showed that total safety after receiving a THA is still a goal to be pursued.ca
dc.format.extent14ca
dc.language.isoengca
dc.publisherMDPIca
dc.relation.ispartofMaterialsca
dc.relation.ispartofseries13;23
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution(CC BY) license (http://creativecommons.org/licenses/by/4.0/).ca
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.otherMalucca
dc.subject.otherFracturesca
dc.subject.otherFatigaca
dc.subject.otherCirurgiaca
dc.subject.otherCadera
dc.subject.otherFracturas óseas
dc.subject.otherFatiga
dc.subject.otherCirugía
dc.subject.otherHip
dc.subject.otherFractures
dc.subject.otherFatigue
dc.subject.otherSurgery
dc.titleEarly short-term postoperative mechanical failures of current ceramic-on-ceramic bearing total hip arthroplastiesca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versioninfo:eu-repo/semantics/publishedVersionca
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapca
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/2PE/TI2018-098075-B-C21ca
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/RTI2018-098075-B-C22ca
dc.subject.udc61ca
dc.subject.udc616.7ca
dc.identifier.doihttps://dx.doi.org/10.3390/ma13235318ca


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© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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