Mute
Dr. Breno Gomes
Na queda de braço, o mecanismo não é impacto direto. É força rotacional. O antebraço fica travado na mesa enquanto o tronco gira e o bíceps e o tríceps entram em contração máxima. Essa oposição cria uma torção intensa no úmero. Quando o osso não suporta essa carga, ocorre a fratura diafisária, geralmente com traço em espiral. O que está por trás dessa lesão • braço fixo sem possibilidade de dissipar a força • contração muscular explosiva • rotação brusca do corpo • força acima da resistência
Follow
11
0
4
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