{"id":4779,"date":"2026-03-16T13:01:59","date_gmt":"2026-03-16T10:01:59","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/callus-osseux\/"},"modified":"2026-04-01T18:37:34","modified_gmt":"2026-04-01T15:37:34","slug":"callus-osseux","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/fr\/glossary\/callus-osseux\/","title":{"rendered":"Callus osseux"},"content":{"rendered":"\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 processus de consolidation de la fracture se d\u00e9roule en plusieurs \u00e9tapes strictement s\u00e9quentielles. Tout d&rsquo;abord, le sang provenant des vaisseaux endommag\u00e9s se coagule, formant un caillot dans lequel s&rsquo;orientent les cellules constructrices de l&rsquo;organisme. Apr\u00e8s quelques semaines, ce caillot est remplac\u00e9 par un tissu cartilagineux dense. \u00c0 cette \u00e9tape, les fragments sont d\u00e9j\u00e0 \u00ab coll\u00e9s \u00bb entre eux, mais la solidit\u00e9 m\u00e9canique fait encore d\u00e9faut.<\/p>\n\n<p>Par la suite, des cellules sp\u00e9cialis\u00e9es min\u00e9ralisent le cartilage avec du calcium, le transformant en os fibreux grossier. La phase finale consiste en un remodelage prolong\u00e9, o\u00f9 le callus grossier se transforme en une structure lamellaire solide, strictement le long des lignes de charge physique.<\/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>L&rsquo;apparition sur les radiographies d&rsquo;une ombre nuageuse caract\u00e9ristique autour de la zone de fracture t\u00e9moigne du bon d\u00e9but du processus de jonction. L&rsquo;ossification compl\u00e8te du callus est le crit\u00e8re clinique principal pour retirer le pl\u00e2tre ou autoriser une charge compl\u00e8te sur la jambe.<\/p>\n\n<p>Dans la pratique m\u00e9dicale, des types pathologiques de callus se rencontrent \u00e9galement ; les plus cliniquement importants sont les callus hypertrophiques et les atrophiques. Le callus hypertrophique survient en raison d&rsquo;un exc\u00e8s de mobilit\u00e9 des fragments et apparait comme une \u00e9norme masse osseuse. Le callus atrophique se d\u00e9veloppe en cas de circulation sanguine locale extr\u00eamement pauvre et est souvent un pr\u00e9curseur de la formation d&rsquo;une pseudarthrose.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le callus osseux (du latin <em>callus<\/em> \u2014 cal, peau \u00e9paisse) est un conglom\u00e9rat temporaire de tissus qui se forme dans la zone de fracture au cours de son processus de gu\u00e9rison biologique. Le callus osseux lie physiquement les fragments osseux, r\u00e9tablissant progressivement la continuit\u00e9 anatomique et la solidit\u00e9 de l&rsquo;os.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-4779","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>Callus osseux : d\u00e9finition m\u00e9dicale et description | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Le callus osseux (du latin callus \u2014 cal, peau \u00e9paisse) est un conglom\u00e9rat temporaire de tissus qui se forme dans la zone de fracture au cours de son processus de gu\u00e9rison biologique. 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