First approach to unilateral transfemoral amputees' contact mechanics
| Autor: | Isabela Mariaka, Juan Ramírez |
|---|---|
| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2017 |
| Předmět: |
musculoskeletal diseases
lcsh:TN1-997 Physics Articular surfaces cartilage stress state lcsh:T 0206 medical engineering finite element method General Engineering transfemoral amputation 02 engineering and technology lcsh:Technology 020601 biomedical engineering 03 medical and health sciences método de elementos finitos 0302 clinical medicine Contact mechanics amputación transfemoral 62 Ingeniería y operaciones afines / Engineering estado de esfuerzos del cartílago Humanities lcsh:Mining engineering. Metallurgy 030217 neurology & neurosurgery |
| Zdroj: | Repositorio UN Universidad Nacional de Colombia instacron:Universidad Nacional de Colombia Dyna, Vol 84, Iss 202, Pp 207-214 (2017) |
| Popis: | espanolLos esfuerzos en la cadera son de gran importancia debido a su relacion con la salud articular. Modelos de elementos finitos pueden predecir el contacto entre cartilagos, sin embargo, modelos de contacto en amputados transfemorales unilaterales, no han sido encontrados aun en la literatura. Se quiere presentar un acercamiento inicial en la mecanica de contacto de la articulacion coxofemoral de dichos pacientes. Deuna base de datos existente, se eligieron tres amputados transfemorales usuarios de protesis; se obtuvieron sus respectivas caderas y femures a partir de tomografia, y los cartilagos de las respectivas superficies articulares. Se crearon modelos por elementos finitos por paciente y se analizola bipedestacion estatica. Se determinaron los esfuerzosal inicio del contacto articular, observando resultados mayores para el lado amputado, tanto para los esfuerzos promedio como para los esfuerzos maximos de contacto; y estos se encontraron en la zona anterior y superior respectivamente. EnglishThe stresses in the hip area havegreat importance because of their relationship to the health of the joint. Finite element models can predict contact between cartilages, however, contact patterns in unilateral transfemoral amputees have not yet been found in literature. We thus want to present an initial approach in the contact mechanics of the hip joint of these amputees. From an existing database, three transfemoral amputees who use prostheses were chosen. Their respective hips and femur were obtained from tomography, and so as their cartilages from their respective articular surfaces. Finite element models were created per patient and static bipedestationwas analyzed. At the beginning of contact between cartilages, contact stresses were determined. The results showed that the stresses of the amputated side were higher than that of the non-amputated, in terms of average and peak contact stress.These were located in the anterior and superior zones, respectively. |
| Databáze: | OpenAIRE |
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