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  • Title: Laryngeal electromyography: a useful technique for the investigation of vocal cord palsy.
    Author: Quiney RE.
    Journal: Clin Otolaryngol Allied Sci; 1989 Aug; 14(4):305-16. PubMed ID: 2805369.
    Abstract:
    Percutaneous needle laryngeal electromyography was used in 22 patients with an established vocal cord palsy of non-laryngological cause. Recordings of action potentials from both vocalis and cricothyroid muscles produced expected results in 8 patients with skull base lesions. In 6 patients with known lesions below the clavicles, ipsilateral cricothyroid activity was found to be normal despite the vocal cord lying in the lateral (or cadaveric) position. In 2 patients electromyography helped establish the site of the lesion. Eight patients with idiopathic cord palsies showed varying cricothyroid function but in all vocalis activity was absent.
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