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To the Editor.—Dr. Malcolm H. Hast deserves congratulations on the publication of his well-prepared paper entitled "Studies on the Extrinsic Laryngeal Muscles" in the Archives (88:273-278 [Sept] 1968). I cannot help making a few comments, however.
Figure 4 contains some inaccuracies. For example, the oblique line of the thyroid cartilage is situated above the cricothyroid muscle, and not halfway through its bulk. The references are incomplete. For example, the clinical picture of isolated paralysis of the cricothyroid muscle has been known for a long time and not only since 1964 as suggested by reference 13. My previous paper entitled "Physiology and Pathology of the Cricothyroid Muscle" (Laryngoscope71:687, 1961) contains a chronologic discussion and citation of many findings that lead to the present knowledge of this type of paralysis (pp 737-742).
Dr. Hast has developed a surgical technique for the correction of unilateral paralysis of the cricothyroid
ARNOLD GE. EXTRINSIC LARYNGEAL MUSCLES. Arch Otolaryngol. 1969;89(3):557. doi:10.1001/archotol.1969.00770020559023
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