ArticleJournal of voice : official journal of the Voice Foundation2003
Muscle fiber type composition and effects of vocal fold immobilization on the two compartments of the human posterior cricoarytenoid: a case study of four patients.
Article in Journal of voice : official journal of the Voice Foundation, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 31 citations in OpenAlex.
- Projection targets of efferent neurons in the internal branch of the superior laryngeal nerve in rats: microdissection and glycogen depletion, immunhistochemical nerve fibre analysis, electromyographic study and three dimensional reconstruction.Anatomical science international · 2026Article
- Canonical Proprioceptors Are Largely Absent in the Intrinsic Laryngeal Muscles of the Rat Larynx.The Journal of comparative neurology · 2025Article
- Absence of developmental and unconventional myosin heavy chain in human suprahyoid muscles.Muscle & nerve · 2014Article
- Cytochrome c oxidase deficiency in human posterior cricoarytenoid muscle.Journal of voice : official journal of the Voice Foundation · 2011Article
- Myosin heavy-chain composition of the human hyoglossus muscle.Dysphagia · 2010Article
- Anatomy and fiber type composition of human interarytenoid muscle.The Annals of otology, rhinology, and laryngology · 2004Article
- Staining of human thyroarytenoid muscle with myosin antibodies reveals some unique extrafusal fibers, but no muscle spindles.Journal of voice : official journal of the Voice Foundation · 2003Article
- Specialized cranial muscles: how different are they from limb and abdominal muscles?Cells, tissues, organs · 2003Review
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
The human posterior cricoarytenoid (PCA) muscle is divided into two compartments, the vertical and horizontal bellies, which contain differences in their myosin heavy chain (MyHC) composition. Using immunohistochemical techniques on whole PCA samples, this study provides a more thorough description of the fiber type composition of entire bellies of the PCA. Four patients provided complete PCA samples containing both compartments of their right and left sides; two with unilaterally immobilized vocal folds. The horizontal belly had 80% slow (type I) fibers and 20% fast (type II) fibers. The vertical belly contained equal amounts of slow and fast fibers (approximately 55%:45%); clearly distinguishing between two compartments. Atrophy of muscle fibers and fiber type grouping were also present in both normal and affected subjects; providing no clear confirmation of the clinical findings of vocal fold immobilization. Further study of the PCA muscle from patients with unilaterally immobilized vocal folds is needed.
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Registered trials
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