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We can confirm that both transcutaneous and percutaneous techniques are effective in the rehabilitation of conductive hearing loss when conventional hearing aids cannot be used. However, both of the systems have some advantages and limitations in terms of audiological and surgical perspectives.

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Carbon dioxide laser endoscopic posterior cordotomy is a safe, minimally invasive, effective technique with a short operation time. A bilateral approach or a revision procedure is rarely required. Bilateral cordotomy should be reserved for patients with insufficient airway passage with unilateral cordotomy.

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