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Algunas veces, se utilizan tornillos pediculares en una fusión espinal para agregarle soporte y resistencia adicionales a dicha fusión mientras cicatriza. Los tornillos pediculares se colocan por encima y por debajo de las vértebras que fueron fusionadas y se utiliza una varilla para conectarlos, lo cual impide el movimiento y permite que el injerto óseo cicatrice. Después de que la fusión esté completamente cicatrizada, se pueden retirar los tornillos y la varilla, aunque esto no es necesario, a menos que le causen molestia al paciente.
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