Biomechanical Behavior of an Hydroxyapatite-Coated Traditional Hip Stem and a Short One of Similar Design: Comparative Study Using Finite Element Analysis
Gómez-Vallejo, J. (Universidad de Zaragoza) ; Roces-García, J. ; Moreta, J. ; Donaire-Hoyas, D. ; Gayoso, Ó. ; Marqués-López, F. ; Albareda, J. (Universidad de Zaragoza)
Resumen: 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.
Idioma: Inglés
DOI: 10.1016/j.artd.2020.11.022
Año: 2021
Publicado en: Arthroplasty Today 7 (2021), 167-176
ISSN: 2352-3441
Factor impacto CITESCORE: 2.0 - Medicine (Q3)
Factor impacto SCIMAGO: 0.809 - Surgery (Q1) - Orthopedics and Sports Medicine (Q1)
Tipo y forma: Article (Published version)
Área (Departamento): Área Traumatología y Ortopedia (Dpto. Cirugía)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
Exportado de SIDERAL (2026-01-26-14:59:50)
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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.
Idioma: Inglés
DOI: 10.1016/j.artd.2020.11.022
Año: 2021
Publicado en: Arthroplasty Today 7 (2021), 167-176
ISSN: 2352-3441
Factor impacto CITESCORE: 2.0 - Medicine (Q3)
Factor impacto SCIMAGO: 0.809 - Surgery (Q1) - Orthopedics and Sports Medicine (Q1)
Tipo y forma: Article (Published version)
Área (Departamento): Área Traumatología y Ortopedia (Dpto. Cirugía)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2026-01-26-14:59:50)
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Record created 2021-03-09, last modified 2026-01-26