{"id":4886,"date":"2026-03-16T13:02:10","date_gmt":"2026-03-16T10:02:10","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/choc-spinal\/"},"modified":"2026-04-01T18:36:53","modified_gmt":"2026-04-01T15:36:53","slug":"choc-spinal","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/fr\/glossary\/choc-spinal\/","title":{"rendered":"Choc spinal"},"content":{"rendered":"\n<p>Le choc spinal (du latin <em>spinalis<\/em> \u2014 signifiant spinal et du fr. <em>choc<\/em> \u2014 signifiant choc ou coup) est un \u00e9tat transitoire de suppression totale de toutes les fonctions r\u00e9flexes et conductrices de la moelle spinale en dessous du niveau de la blessure, qui survient en r\u00e9ponse \u00e0 un traumatisme m\u00e9canique aigu de la colonne vert\u00e9brale.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>\u00c9tiologie et physiopathologie<\/strong><\/h2>\n\n<p>Le ph\u00e9nom\u00e8ne repose sur une cessation soudaine, structurelle ou fonctionnelle, de l&rsquo;influence tonique (stimulation constante) des centres sup\u00e9rieurs du cerveau sur les motoneurones de la moelle spinale. Il en r\u00e9sulte une hyperpolarisation brutale des membranes cellulaires des neurones situ\u00e9s en dessous du site de la l\u00e9sion, les rendant insensibles \u00e0 tout signal.<\/p>\n\n<p>L&rsquo;\u00e9tat se caract\u00e9rise cliniquement par une paralysie flasque de la musculature squelettique, une perte totale de tous types de sensibilit\u00e9 (anesth\u00e9sie), une ar\u00e9flexie totale et une atonie des muscles lisses des organes pelviens (r\u00e9tention aigu\u00eb d&rsquo;urine et paresie intestinale paralytique).<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Importance clinique<\/strong><\/h2>\n\n<p>Le choc spinal masque le v\u00e9ritable degr\u00e9 de destruction anatomique du tissu nerveux. Dans la phase aigu\u00eb (les premiers jours apr\u00e8s la blessure), il est neurologiquement impossible de distinguer une rupture anatomique compl\u00e8te de la moelle spinale d&rsquo;une contusion s\u00e9v\u00e8re, car le tableau clinique appara\u00eet de fa\u00e7on tout aussi d\u00e9sesp\u00e9rante.<\/p>\n\n<p>La dur\u00e9e de la phase de choc chez l&rsquo;homme varie de quelques jours \u00e0 plusieurs semaines. Le retour du r\u00e9flexe bulbocaverneux est consid\u00e9r\u00e9 comme un crit\u00e8re objectif de sortie de l&rsquo;\u00e9tat de choc spinal. C&rsquo;est seulement apr\u00e8s son apparition que le syst\u00e8me nerveux passe \u00e0 une phase de spasticit\u00e9, permettant au clinicien d&rsquo;\u00e9valuer de mani\u00e8re fiable le pronostic de r\u00e9habilitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le choc spinal (du latin <em>spinalis<\/em> \u2014 signifiant spinal et du fr. <em>choc<\/em> \u2014 signifiant choc ou coup) est un \u00e9tat transitoire de suppression totale de toutes les fonctions r\u00e9flexes et conductrices de la moelle spinale en dessous du niveau de la blessure, qui survient en r\u00e9ponse \u00e0 un traumatisme m\u00e9canique aigu de la colonne vert\u00e9brale.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-4886","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Choc spinal 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