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Arytenoid adduction. Preoperative axial CT image (A) and postoperative axial CT image (B) demonstrate the medially rotated (adducted) left arytenoid cartilage (white arrow) compared with the preoperative position (black arrow). Note that adduction turns the arytenoid in toward the vocal cord to ensure that no air leaks through the posterior glottic gap. This result helps patients achieve a more robust voice quality after the operation.
