000099773 001__ 99773
000099773 005__ 20260126150156.0
000099773 0247_ $$2doi$$a10.1016/j.artd.2020.11.022
000099773 0248_ $$2sideral$$a123251
000099773 037__ $$aART-2021-123251
000099773 041__ $$aeng
000099773 100__ $$0(orcid)0000-0002-5754-6501$$aGómez-Vallejo, J.$$uUniversidad de Zaragoza
000099773 245__ $$aBiomechanical Behavior of an Hydroxyapatite-Coated Traditional Hip Stem and a Short One of Similar Design: Comparative Study Using Finite Element Analysis
000099773 260__ $$c2021
000099773 5060_ $$aAccess copy available to the general public$$fUnrestricted
000099773 5203_ $$aBackground: 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.
000099773 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000099773 592__ $$a0.809$$b2021
000099773 594__ $$a2.0$$b2021
000099773 593__ $$aSurgery$$c2021$$dQ1
000099773 593__ $$aOrthopedics and Sports Medicine$$c2021$$dQ1
000099773 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000099773 700__ $$aRoces-García, J.
000099773 700__ $$aMoreta, J.
000099773 700__ $$aDonaire-Hoyas, D.
000099773 700__ $$aGayoso, Ó.
000099773 700__ $$aMarqués-López, F.
000099773 700__ $$0(orcid)0000-0003-4489-3130$$aAlbareda, J.$$uUniversidad de Zaragoza
000099773 7102_ $$11013$$2830$$aUniversidad de Zaragoza$$bDpto. Cirugía$$cÁrea Traumatología y Ortopedia
000099773 773__ $$g7 (2021), 167-176$$tArthroplasty Today$$x2352-3441
000099773 8564_ $$s326717$$uhttps://zaguan.unizar.es/record/99773/files/texto_completo.pdf$$yVersión publicada
000099773 8564_ $$s2256879$$uhttps://zaguan.unizar.es/record/99773/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000099773 909CO $$ooai:zaguan.unizar.es:99773$$particulos$$pdriver
000099773 951__ $$a2026-01-26-14:59:50
000099773 980__ $$aARTICLE