Biomechanical behavior of an hydroxyapatite-coated traditional hip stem and a short one of similar design: comparative study using finite element analysis

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• dc.contributor.author Gómez Vallejo, Jesús
• dc.contributor.author Roces García, Jorge
• dc.contributor.author Moreta, Jesús
• dc.contributor.author Donaire Hoyas, Daniel
• dc.contributor.author Gayoso, Óscar
• dc.contributor.author Marqués López, Fernando
• dc.contributor.author Albareda, Jorge
• dc.date.accessioned 2021-04-20T06:24:39Z
• dc.date.available 2021-04-20T06:24:39Z
• dc.date.issued 2021
• dc.description.abstract Background: The objective is to compare, by the means of finite elements analysis, the biomechanical behavior of a conventional stem of proven performance with a short stem based on the same fixation principles. Methods: A 3D femur was modeled from CT scan data, and real bone density measures were incorporated into it. Load stresses were applied to that bone in 3 different scenarios: without prosthesis, with the conventional stem, and with the short stem. Different bone loading patterns were compared by Gruen's zones both visually and statistically using Welch's test. Results: The implantation of a stem generates a certain degree of stress shielding in the surrounding bone, but the pattern of the change is very similar in the compared stem models. Although there is statistical significance (P < 0.01) in the mean stress variation in most of the Gruen's zones, the magnitude of the difference is always under 2 MPa (range: 0.01 - 1.74 MPa). Conclusions: The bone loading patterns of the traditional stem and the short stem are very similar. Although there is no evidence of a link between biomechanics and clinical outcomes, our results may suggest that theoretical advantages of short stems can be exploited without the fear of altering bone loading patterns.
• dc.format.mimetype application/pdf
• dc.identifier.citation Gómez-Vallejo J, Roces-García J, Moreta J, Donaire-Hoyas D, Gayoso Ó, Marqués-López F, Albareda J. Biomechanical behavior of an hydroxyapatite-coated traditional hip stem and a short one of similar design: comparative study using finite element analysis. Arthroplast Today. 2021; 7:167-76. DOI: 10.1016/j.artd.2020.11.022
• dc.identifier.doi http://dx.doi.org/10.1016/j.artd.2020.11.022
• dc.identifier.issn 2352-3441
• dc.identifier.uri http://hdl.handle.net/10230/47156
• dc.language.iso eng
• dc.publisher Elsevier
• dc.relation.ispartof Arthroplast Today. 2021; 7:167-76
• dc.rights © 2020 The Authors. Published by Elsevier Inc. on behalf of The American Association of Hip and Knee Surgeons. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
• dc.subject.keyword Biomechanics
• dc.subject.keyword Finite elements
• dc.subject.keyword Hip
• dc.subject.keyword Loading
• dc.subject.keyword Short stem
• dc.subject.keyword THR
• dc.title Biomechanical behavior of an hydroxyapatite-coated traditional hip stem and a short one of similar design: comparative study using finite element analysis
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion