{"id":4891,"date":"2026-03-16T13:02:08","date_gmt":"2026-03-16T10:02:08","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/laminectomia\/"},"modified":"2026-04-01T18:37:23","modified_gmt":"2026-04-01T15:37:23","slug":"laminectomia","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossary\/laminectomia\/","title":{"rendered":"Laminectomia"},"content":{"rendered":"\n<p>Laminectomia (do latim <em>lamina<\/em> \u2014 l\u00e2mina e do grego <em>ektome<\/em> \u2014 excis\u00e3o, remo\u00e7\u00e3o) \u00e9 uma opera\u00e7\u00e3o neurocir\u00fargica na coluna vertebral que consiste na excis\u00e3o completa do arco vertebral.<\/p>\n\n<p>O objetivo principal desta interven\u00e7\u00e3o \u00e9 a expans\u00e3o f\u00edsica do canal vertebral para eliminar a compress\u00e3o cr\u00edtica da medula espinhal ou de suas ra\u00edzes nervosas.<\/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>Etiologia e fisiopatologia<\/strong><\/h2>\n\n<p>Anatomicamente, a l\u00e2mina \u00f3ssea cobre a medula espinhal por tr\u00e1s, exercendo uma fun\u00e7\u00e3o de prote\u00e7\u00e3o essencial. Entretanto, em casos de les\u00f5es graves (fraturas com fragmenta\u00e7\u00e3o e desvio) ou doen\u00e7as degenerativas, o espa\u00e7o dentro do canal vertebral pode se estreitar drasticamente. No patog\u00eanese da estenose, tamb\u00e9m participa a hipertrofia compensat\u00f3ria do ligamento amarelo adjacente.<\/p>\n\n<p>Durante a cirurgia, o cirurgi\u00e3o remove o processo espinhoso e ambas as l\u00e2minas \u00f3sseas da l\u00e2mina vertebral at\u00e9 os processos articulares. Isso cria uma ampla &#8220;janela de descompress\u00e3o&#8221; para o saco dural. Como resultado da interven\u00e7\u00e3o, restaura-se imediatamente a circula\u00e7\u00e3o normal do l\u00edquido cefalorraquidiano e o suprimento arterial adequado ao tecido nervoso isqu\u00eamico.<\/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>Import\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>A laminectomia \u00e9 considerada o padr\u00e3o ouro cl\u00e1ssico para cirurgias de emerg\u00eancia em s\u00edndrome de compress\u00e3o aguda, como no caso de forma\u00e7\u00e3o de hematomas epidurais p\u00f3s-traum\u00e1ticos. A cirurgia tamb\u00e9m \u00e9 realizada para proporcionar acesso cir\u00fargico direto \u00e0 medula espinhal na remo\u00e7\u00e3o de tumores intramedulares.<\/p>\n\n<p>Apesar da alta efic\u00e1cia cl\u00ednica na preserva\u00e7\u00e3o das fun\u00e7\u00f5es nervosas, a remo\u00e7\u00e3o completa do complexo de suporte posterior inevitavelmente reduz a estabilidade biomec\u00e2nica do segmento vertebral. Por esta raz\u00e3o, na traumatologia moderna, a laminectomia \u00e9 praticamente sempre complementada por um est\u00e1gio de estabiliza\u00e7\u00e3o \u2013 a fus\u00e3o espinhal transpedicular (fixa\u00e7\u00e3o das v\u00e9rtebras com parafusos de tit\u00e2nio).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Laminectomia (do latim <em>lamina<\/em> \u2014 l\u00e2mina e do grego <em>ektome<\/em> \u2014 excis\u00e3o, remo\u00e7\u00e3o) \u00e9 uma opera\u00e7\u00e3o neurocir\u00fargica na coluna vertebral que consiste na excis\u00e3o completa do arco vertebral.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-4891","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>Laminectomia: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta 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