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The cricothyroid muscle does not influence vocal fold position in laryngeal paralysis.
Laryngoscope. 1995 Apr; 105(4 Pt 1):368-72.L

Abstract

The status of the cricothyroid muscle, which is innervated by the superior laryngeal nerve, is believed to influence the vocal fold position in laryngeal paralysis. It is believed that isolated lesions of the recurrent laryngeal nerve generally result in the paralyzed vocal fold assuming a paramedian position but that with lesions of both the superior and recurrent laryngeal nerves, a more lateral (intermediate or cadaveric) vocal fold position can be expected. Twenty-six consecutive patients with unilateral vocal fold paralysis underwent transnasal fiberoptic laryngoscopy (TFL) and laryngeal electromyography (LEMG). By TFL, the vocal fold positions were paramedian in 8 patients, intermediate in 7, and lateral in 11. By LEMG, 13 patients had isolated recurrent laryngeal nerve lesions and 13 patients had combined (superior and recurrent laryngeal nerve) lesions. There was no correlation between the vocal fold position and the status of the cricothyroid muscle, i.e., the status of the cricothyroid muscle by LEMG did not predict the vocal fold position nor did the vocal fold position by TFL predict the site of lesion. In addition, we investigated the possibility that the degree of thyroarytenoid muscle recruitment (tone) might correlate with vocal fold position, but no relation was found. We conclude that 1. the cricothyroid muscle does not predictably influence the position of the vocal fold in unilateral paralysis; 2. thyroarytenoid muscle recruitment (tone) does not appear to influence vocal fold position; and 3. still unidentified and unknown factors may be responsible for determining vocal fold position in laryngeal paralysis.

Authors+Show Affiliations

Center For Voice Disorders of Wake Forest University, Winston-Salem, NC 27157-1034, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

7715379

Citation

Koufman, J A., et al. "The Cricothyroid Muscle Does Not Influence Vocal Fold Position in Laryngeal Paralysis." The Laryngoscope, vol. 105, no. 4 Pt 1, 1995, pp. 368-72.
Koufman JA, Walker FO, Joharji GM. The cricothyroid muscle does not influence vocal fold position in laryngeal paralysis. Laryngoscope. 1995;105(4 Pt 1):368-72.
Koufman, J. A., Walker, F. O., & Joharji, G. M. (1995). The cricothyroid muscle does not influence vocal fold position in laryngeal paralysis. The Laryngoscope, 105(4 Pt 1), 368-72.
Koufman JA, Walker FO, Joharji GM. The Cricothyroid Muscle Does Not Influence Vocal Fold Position in Laryngeal Paralysis. Laryngoscope. 1995;105(4 Pt 1):368-72. PubMed PMID: 7715379.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The cricothyroid muscle does not influence vocal fold position in laryngeal paralysis. AU - Koufman,J A, AU - Walker,F O, AU - Joharji,G M, PY - 1995/4/1/pubmed PY - 1995/4/1/medline PY - 1995/4/1/entrez SP - 368 EP - 72 JF - The Laryngoscope JO - Laryngoscope VL - 105 IS - 4 Pt 1 N2 - The status of the cricothyroid muscle, which is innervated by the superior laryngeal nerve, is believed to influence the vocal fold position in laryngeal paralysis. It is believed that isolated lesions of the recurrent laryngeal nerve generally result in the paralyzed vocal fold assuming a paramedian position but that with lesions of both the superior and recurrent laryngeal nerves, a more lateral (intermediate or cadaveric) vocal fold position can be expected. Twenty-six consecutive patients with unilateral vocal fold paralysis underwent transnasal fiberoptic laryngoscopy (TFL) and laryngeal electromyography (LEMG). By TFL, the vocal fold positions were paramedian in 8 patients, intermediate in 7, and lateral in 11. By LEMG, 13 patients had isolated recurrent laryngeal nerve lesions and 13 patients had combined (superior and recurrent laryngeal nerve) lesions. There was no correlation between the vocal fold position and the status of the cricothyroid muscle, i.e., the status of the cricothyroid muscle by LEMG did not predict the vocal fold position nor did the vocal fold position by TFL predict the site of lesion. In addition, we investigated the possibility that the degree of thyroarytenoid muscle recruitment (tone) might correlate with vocal fold position, but no relation was found. We conclude that 1. the cricothyroid muscle does not predictably influence the position of the vocal fold in unilateral paralysis; 2. thyroarytenoid muscle recruitment (tone) does not appear to influence vocal fold position; and 3. still unidentified and unknown factors may be responsible for determining vocal fold position in laryngeal paralysis. SN - 0023-852X UR - https://www.unboundmedicine.com/medline/citation/7715379/The_cricothyroid_muscle_does_not_influence_vocal_fold_position_in_laryngeal_paralysis_ L2 - https://doi.org/10.1288/00005537-199504000-00005 DB - PRIME DP - Unbound Medicine ER -