{"id":39690,"date":"2025-11-27T07:30:00","date_gmt":"2025-11-27T10:30:00","guid":{"rendered":"https:\/\/www.grupomedcof.com.br\/blog\/?p=39690"},"modified":"2025-11-24T18:43:49","modified_gmt":"2025-11-24T21:43:49","slug":"infeccoes-osteoarticulares-pediatria","status":"publish","type":"post","link":"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/","title":{"rendered":"Infec\u00e7\u00f5es Osteoarticulares na Pediatria: Sintomas e Riscos"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sum\u00e1rio<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabela de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/#O_Terreno_da_Infeccao_Definicoes_e_Diferencas\" >O Terreno da Infec\u00e7\u00e3o: Defini\u00e7\u00f5es e Diferen\u00e7as<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/#Etiologia\" >Etiologia<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/#O_Quebra-Cabeca_Diagnostico\" >O Quebra-Cabe\u00e7a Diagn\u00f3stico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/#A_Conduta_Terapeutica_Antibiotico_e_Bisturi\" >A Conduta Terap\u00eautica: Antibi\u00f3tico e Bisturi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/infeccoes-osteoarticulares-pediatria\/#Garanta_sua_vaga_na_residencia_medica_com_as_melhores_condicoes_do_ano\" >Garanta sua vaga na resid\u00eancia m\u00e9dica com as melhores condi\u00e7\u00f5es do ano!<\/a><\/li><\/ul><\/nav><\/div>\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11.jpg\" alt=\"Infec\u00e7\u00f5es Osteoarticulares na Pediatria: Sintomas e Riscos\" class=\"wp-image-39691\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11.jpg 1920w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-300x169.jpg 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-1024x576.jpg 1024w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-768x432.jpg 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-1536x864.jpg 1536w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-747x420.jpg 747w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-150x84.jpg 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-696x392.jpg 696w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/Revalida-11-1068x601.jpg 1068w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<p>Quando atendemos uma crian\u00e7a com dor em membro, febre e limita\u00e7\u00e3o de movimento, dois diagn\u00f3sticos graves precisam acender um sinal de alerta imediato em nossa mente: <strong>Osteomielite e Artrite S\u00e9ptica<\/strong>. <\/p>\n\n\n\n<p>Embora distintas, essas condi\u00e7\u00f5es s\u00e3o infec\u00e7\u00f5es profundas que compartilham etiologias e a urg\u00eancia no tratamento para evitar sequelas motoras definitivas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-terreno-da-infeccao-definicoes-e-diferencas\"><span class=\"ez-toc-section\" id=\"O_Terreno_da_Infeccao_Definicoes_e_Diferencas\"><\/span><strong>O Terreno da Infec\u00e7\u00e3o: Defini\u00e7\u00f5es e Diferen\u00e7as<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u00c9 fundamental diferenciar o <strong>s\u00edtio anat\u00f4mico<\/strong>, embora a fisiopatologia muitas vezes se sobreponha.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Osteomielite:<\/strong> \u00c9 o processo inflamat\u00f3rio do tecido \u00f3sseo (medular ou cortical). Costuma ter um quadro mais <strong>insidioso<\/strong>. A crian\u00e7a pode apresentar dor local, sinais flog\u00edsticos e febre, mas \u00e0s vezes o quadro se arrasta como uma Febre de Origem Indeterminada (FOI).<\/li>\n\n\n\n<li><strong>Artrite S\u00e9ptica:<\/strong> \u00c9 a infec\u00e7\u00e3o do espa\u00e7o articular. Aqui, o quadro \u00e9 <strong>s\u00fabito<\/strong>. A dor \u00e9 intensa, articular, e h\u00e1 uma limita\u00e7\u00e3o ou bloqueio importante do movimento. Lembre-se que ela \u00e9 geralmente monoarticular.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"889\" height=\"474\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1.png\" alt=\"\" class=\"wp-image-39692\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1.png 889w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1-300x160.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1-768x409.png 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1-788x420.png 788w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1-150x80.png 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-1-696x371.png 696w\" sizes=\"auto, (max-width: 889px) 100vw, 889px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Osso saud\u00e1vel (esquerda) e osso com exsudato e necrose (direita). Fonte: Acervo de aulas do Grupo MedCof.<\/em><\/p>\n\n\n\n<p><strong>Um ponto anat\u00f4mico crucial na pediatria:<\/strong> em crian\u00e7as menores de 18 meses, os vasos sangu\u00edneos atravessam a fise (placa de crescimento). Isso significa que uma infec\u00e7\u00e3o no osso (osteomielite) pode facilment<strong>e atravessar para a articula\u00e7\u00e3o<\/strong>, causando uma artrite s\u00e9ptica <strong>secund\u00e1ria<\/strong>. Ap\u00f3s essa idade, a fise funciona como uma barreira vascular, tornando os compartimentos mais independentes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-etiologia\"><span class=\"ez-toc-section\" id=\"Etiologia\"><\/span><strong>Etiologia<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>O principal \u00e9 o <strong>Staphylococcus aureus<\/strong>. Ele \u00e9 respons\u00e1vel por cerca de<strong> 2\/3 dos casos<\/strong> em qualquer idade. No entanto, a cl\u00ednica do paciente nos d\u00e1 pistas valiosas para pensar em outros agentes:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"788\" height=\"526\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2.png\" alt=\"\" class=\"wp-image-39693\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2.png 788w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2-300x200.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2-768x513.png 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2-629x420.png 629w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2-150x100.png 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-2-696x465.png 696w\" sizes=\"auto, (max-width: 788px) 100vw, 788px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Bact\u00e9ria Staphylococcus aureus com forma esf\u00e9rica e cerca de 1 micr\u00f4metro de di\u00e2metro.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Anemia Falciforme:<\/strong> Pense em <em>Salmonella sp<\/em>.<\/li>\n\n\n\n<li><strong>Crian\u00e7as &lt; 5 anos (especialmente &lt; 3 anos):<\/strong> A <em>Kingella kingae<\/em> tem ganhado destaque. Ela causa quadros mais indolentes, com menos sintomas sist\u00eamicos e altera\u00e7\u00f5es laboratoriais mais discretas.<\/li>\n\n\n\n<li><strong>Les\u00e3o perfurante no p\u00e9 (famoso prego no sapato):<\/strong> Suspeite de <em>Pseudomonas aeruginosa<\/em>.<\/li>\n\n\n\n<li><strong>Rec\u00e9m-nascidos:<\/strong> <em>Streptococcus agalactiae<\/em> (Grupo B) e Gram-negativos ent\u00e9ricos.<\/li>\n\n\n\n<li><strong>Arranhadura de gato:<\/strong> <em>Bartonella henselae<\/em>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-quebra-cabeca-diagnostico\"><span class=\"ez-toc-section\" id=\"O_Quebra-Cabeca_Diagnostico\"><\/span><strong>O Quebra-Cabe\u00e7a Diagn\u00f3stico<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>O diagn\u00f3stico n\u00e3o se baseia em uma \u00fanica pe\u00e7a. Precisamos somar <strong>cl\u00ednica, laborat\u00f3rio e imagem.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Laborat\u00f3rio:<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Voc\u00ea vai encontrar aumento de provas inflamat\u00f3rias. O VHS costuma estar elevado em mais de 90% dos casos (mas demora a subir e a cair) e o PCR (Prote\u00edna C Reativa) \u00e9 excelente para acompanhamento, pois normaliza mais r\u00e1pido com o tratamento. A hemocultura \u00e9 positiva em cerca de 40% dos casos e \u00e9 obrigat\u00f3ria.<\/p>\n\n\n\n<p>Para Artrite S\u00e9ptica, existem 4 crit\u00e9rios cl\u00e1ssicos <strong>(Crit\u00e9rios de Kocher) <\/strong>que, quando presentes, t\u00eam alt\u00edssima acur\u00e1cia (99,6%):<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Febre > 38,5\u00baC.<\/strong><\/li>\n\n\n\n<li><strong>VHS > 40 mm\/h.<\/strong><\/li>\n\n\n\n<li><strong>Incapacidade de apoiar o peso no membro.<\/strong><\/li>\n\n\n\n<li><strong>Leucocitose > 12.000\/mm\u00b3.<\/strong><\/li>\n<\/ol>\n\n\n\n<p><strong>Imagem:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Raio-X:<\/strong> \u00c9 o exame inicial para descartar fraturas ou tumores, mas cuidado: na osteomielite aguda, as altera\u00e7\u00f5es \u00f3sseas (como rea\u00e7\u00e3o periosteal) s\u00f3 aparecem tardiamente (ap\u00f3s 10-14 dias).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"502\" height=\"518\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3.png\" alt=\"\" class=\"wp-image-39694\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3.png 502w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3-291x300.png 291w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3-407x420.png 407w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3-150x155.png 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2025\/11\/artrite-3-300x310.png 300w\" sizes=\"auto, (max-width: 502px) 100vw, 502px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Mais comum em ossos longos, acometendo principalmente met\u00e1fises, especialmente f\u00eamur e t\u00edbia. Adaptado de: Acute Osteomyelitis in Children. Peltola, et al.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ultrassom:<\/strong> \u00d3timo para ver derrame articular na artrite ou cole\u00e7\u00f5es subperiosteais.<\/li>\n\n\n\n<li><strong>Resson\u00e2ncia Magn\u00e9tica (RNM):<\/strong> \u00c9 o padr\u00e3o-ouro. Detecta edema na medula \u00f3ssea precocemente e define a extens\u00e3o da les\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-a-conduta-terapeutica-antibiotico-e-bisturi\"><span class=\"ez-toc-section\" id=\"A_Conduta_Terapeutica_Antibiotico_e_Bisturi\"><\/span><strong>A Conduta Terap\u00eautica: Antibi\u00f3tico e Bisturi<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>O tratamento \u00e9 uma corrida contra o tempo para preservar o osso e a articula\u00e7\u00e3o.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Antibioticoterapia:<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Sempre devemos cobrir o S. aureus. O in\u00edcio \u00e9 <strong>endovenoso<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Esquema Emp\u00edrico Padr\u00e3o:<\/strong> Oxacilina ou Cefazolina.<\/li>\n\n\n\n<li><strong>Suspeita de MRSA (Staphylococcus resistente):<\/strong> Clindamicina ou Vancomicina.<\/li>\n\n\n\n<li><strong>Anemia Falciforme \/ Kingella:<\/strong> Associar Ceftriaxone.<\/li>\n\n\n\n<li><strong>Suspeita de Pseudomonas:<\/strong> Associar Ceftazidima.<\/li>\n<\/ul>\n\n\n\n<p><strong>Dura\u00e7\u00e3o do Tratamento:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Artrite S\u00e9ptica:<\/strong> 2 a 4 semanas.<\/li>\n\n\n\n<li><strong>Osteomielite:<\/strong> 3 a 6 semanas (o osso \u00e9 um tecido de dif\u00edcil penetra\u00e7\u00e3o antibi\u00f3tica).<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cirurgia:<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Nem todo caso opera, mas a<strong> drenagem cir\u00fargica<\/strong> \u00e9 mandat\u00f3ria se houver: sepse com piora r\u00e1pida, abscesso grande, grande quantidade de l\u00edquido purulento ou falha do tratamento cl\u00ednico inicial (24-72h). Na artrite s\u00e9ptica, a lavagem articular \u00e9 frequentemente necess\u00e1ria para remover as enzimas proteol\u00edticas que destroem a cartilagem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"seja-um-medcoffer\"><span class=\"ez-toc-section\" id=\"Garanta_sua_vaga_na_residencia_medica_com_as_melhores_condicoes_do_ano\"><\/span><strong>Garanta sua vaga na resid\u00eancia m\u00e9dica com as melhores condi\u00e7\u00f5es do ano!<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Se voc\u00ea quer conquistar a&nbsp;<strong>vaga de resid\u00eancia medica dos sonhos<\/strong>, o&nbsp;<strong>Extensivo 2.0 MedCof<\/strong>&nbsp;\u00e9 o caminho mais assertivo:&nbsp;<strong>m\u00e9todo direto ao ponto, rota de estudos para quem tem pouco tempo<\/strong>&nbsp;e o&nbsp;<strong>melhor hist\u00f3rico de aprova\u00e7\u00e3o do pa\u00eds.<\/strong>&nbsp;Garanta sua vaga agora com as melhores condi\u00e7\u00f5es do ano na&nbsp;<strong><a href=\"https:\/\/extensivo.grupomedcof.com.br\/\" target=\"_blank\" rel=\"noreferrer noopener\">Black November!<\/a><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"youtube-embed\" data-video_id=\"8h8e6sGkdko\"><iframe loading=\"lazy\" title=\"Intensivo resid\u00eancia m\u00e9dica - 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