{"id":71374,"date":"2018-03-09T23:15:59","date_gmt":"2018-03-09T23:15:59","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-biomecanico-del-efecto-de-la-rhbmp-2-y-la-rigidez-de-fijacion-en-el-tratamiento-de-reparacion-de-fracturas-tibiales-en-conejo\/"},"modified":"2018-03-09T23:15:59","modified_gmt":"2018-03-09T23:15:59","slug":"estudio-biomecanico-del-efecto-de-la-rhbmp-2-y-la-rigidez-de-fijacion-en-el-tratamiento-de-reparacion-de-fracturas-tibiales-en-conejo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/estudio-biomecanico-del-efecto-de-la-rhbmp-2-y-la-rigidez-de-fijacion-en-el-tratamiento-de-reparacion-de-fracturas-tibiales-en-conejo\/","title":{"rendered":"Estudio biomec\u00e1nico del efecto de la rhbmp-2 y la rigidez de fijaci\u00f3n en el tratamiento de reparaci\u00f3n de fracturas tibiales en conejo"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mireia Garc\u00eda Rosell\u00f3 <\/strong><\/h2>\n<p>Las condiciones mec\u00e1nicas constituyen uno de los factores m\u00e1s importantes que controlan el mecanismo a trav\u00e9s del cual tiene lugar el proceso de reparaci\u00f3n de fracturas. En la actualidad se desconoce la influencia de la rigidez del sistema de fijaci\u00f3n en el comportamiento de la prote\u00edna morfogen\u00e9tica \u00f3sea 2 (rhbmp-2) durante el proceso de consolidaci\u00f3n de fracturas tibiales en conejos. Esta tesis eval\u00faa biomec\u00e1nicamente el efecto de la rhbmp-2, utilizando una esponja reabsorbible de col\u00e1geno (acs) como transportador de la prote\u00edna, ante dos ambientes mec\u00e1nicos distintos (fijador externo de alta rigidez -far- y de baja rigidez -fbr-) a lo largo de tres per\u00edodos experimentales (3, 5 y 8 semanas). Para ello se realizan tres grupos experimentales rhbmp-2\/acs, acs y grupo control. Las tibias osteotomizadas y las contralaterales sanas se eval\u00faan mediante dos tipos de ensayos mec\u00e1nicos: en primer lugar los ensayos no destructivos de flexi\u00f3n a cuatro puntos, de donde se obtienen las gr\u00e1ficas del perfil polar de rigidez (pprf) y los par\u00e1metros \u00edndice de rigidez y la relaci\u00f3n de \u00e1reas. En segundo lugar los ensayos destructivos a torsi\u00f3n, obteni\u00e9ndose los par\u00e1metros de rigidez torsional, resistencia, energ\u00eda absorbida y desplazamiento angular m\u00e1ximo. A su vez, los par\u00e1metros mec\u00e1nicos m\u00e1s importantes se ajustan al modelo de crecimiento de richards. los resultados muestran que la rhbmp-2 ejerce un efecto positivo \u00fanicamente en las primeras semanas de reparaci\u00f3n bajo fijaci\u00f3n el\u00e1stica en la variable \u00edndice de rigidez al comparar los grupos rhbmp-2\/acs frente a los grupos sin tratamiento; asimismo, el tratamiento rhbmp-2\/acs no act\u00faa en condiciones de elevada rigidez. Se observa una inhibici\u00f3n del proceso de reparaci\u00f3n \u00f3sea debida a la presencia del transportador (acs) en los grupos con fijadores de baja rigidez, existiendo diferencias entre los grupos rhbmp-2\/acs y sin tratamiento frente a los grupos con el tran<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio biomec\u00e1nico del efecto de la rhbmp-2 y la rigidez de fijaci\u00f3n en el tratamiento de reparaci\u00f3n de fracturas tibiales en conejo<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio biomec\u00e1nico del efecto de la rhbmp-2 y la rigidez de fijaci\u00f3n en el tratamiento de reparaci\u00f3n de fracturas tibiales en conejo <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mireia Garc\u00eda Rosell\u00f3 <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/11\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Peris Serra Jos\u00e9 Luis<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: marcial Pla torres <\/li>\n<li> Prat pastor Jaime Miguel (vocal)<\/li>\n<li>Jos\u00e9 Becerra ratia (vocal)<\/li>\n<li>joaquin Sopena juncosa (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mireia Garc\u00eda Rosell\u00f3 Las condiciones mec\u00e1nicas constituyen uno de los factores m\u00e1s importantes que controlan el mecanismo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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