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Semon's law

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Semon's law states that in a progressive lesion of the recurrent laryngeal nerve, the abductors are paralysed before the adductors.

This means that in an incomplete paralysis, the cord will be brought to the midline by the adductors, but in complete paralysis it falls away to the paramedian position.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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