Studies concerning the action of the musculus cricothyreoideus

Tschiassny, Kurt

doi:10.1288/00005537-194411000-00001

Cited by 30 publications

(14 citation statements)

References 5 publications

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“…This is consistent with previous work by others [Faaborg-Andersen, 1957]. Cricothyroid muscle morphology is assumed to be well understood as composed of broad, triangular sheets of muscle bundles divided into the pars recta and oblique, and attached to the lateral surfaces of the cricoid cartilage and inferior borders and inferior horn of the thyroid cartilage [Tschiassney, 1944;Faaborg-Andersen, 1957; May- Size PCA CT LAC PIM T1 T2 T1 T2 T1 T2 T1 T2 0 0 0 0 0 0 0 0 0 5 1 1 0 0 1 0 8 0 0 10 4 2 1 2 10 9 3 1 15 5 3 0 3 12 12 8 5 20 8 7 5 5 18 17 10 7 25 12 12 12 12 20 19 18 12 30 17 15 17 15 24 23 22 20 35 22 23 22 23 26 23 24 20 40 26 22 30 27 30 27 27 et and Muendnich, 1958;Arnold, 1961;Kuchinski et al, 1979;Fischer and Tillman, 1991]. There is passing mention of the PIM in these other studies.…”

Section: Generalsupporting

confidence: 90%

“…The PIM has been sporadically discussed in the published literature [Tschiassney, 1944;Mayet and Muendnich, 1958;Arnold, 1961;Kucinski, 1979;Fischer and Tillman, 1991]. Arnold's [1961] seminal work referenced other authors' who described the pars interna of the cricothyroid muscle as a small muscle attached to the upper cricoid surface and the inner surface of the thyroid cartilage.…”

mentioning

confidence: 99%

“…In the end they considered the PIM little more than an anatomical variation of the cricothyroid proper, while stating that the pars obliqua was absent in 2% of specimens. In a study not related to the search for the PIM, Tschiassney [1944] examined extensively the cricothyroid joint. He reported a few fibers in alignment with a PIM, but also stated that those fibers were irregular in appearance.…”

mentioning

confidence: 99%

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The Pars Interna/Media Anatomy and Histology in the Human Larynx

Charpied

2007

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The pars interna/media (PIM) is a small muscle found in the human larynx that has not been successfully described in contemporary literature on laryngeal structure. The objective of this study was to describe the PIM’s anatomy in detail. Thirteen human larynges obtained from postmortem examination were cleaned and preserved. Exposure of the PIM was through a lateral disarticulation of the cricothyroid joint and reflection of the cricothyroid muscle and the thyroid lamina. In the human, the PIM was found to be strap-like in form and to have two bellies with attachments to the medial surface of the thyroid cartilage at the root of the inferior horn and anteriosuperior cricoid arch. It appears to be innervated by a middle division, vestibular branch, of the internal superior laryngeal nerve. The average fiber diameter is 40 µm. Its type 1-to-type 2 fiber ratio places it within the range of other intrinsic laryngeal muscles. A muscle spindle was identified in medial bundle at the PIM’s thyroid attachment. Thyroid medial surface attachment is within few millimeters of the muscular process of the arytenoid cartilage. These data show that the PIM is a robust muscle and deserves attention anatomically. Its orientation within the thyroid and nonrecurrent laryngeal nerve innervations of the human PIM may place it in the vocal fold tensor group rather than the laryngeal sphincter group. It is possible the PIM reports on cricothyroid distance and right versus left cricothyroid joint stresses. Electromyographic examination of the PIM in the Rhesus larynx may help elucidate its physiology to elaborate its human physiology.

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Section: Generalsupporting

confidence: 90%

mentioning

confidence: 99%

mentioning

confidence: 99%

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The Pars Interna/Media Anatomy and Histology in the Human Larynx

Charpied

2007

Folia Phoniatr Logop

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“…He states that complete bilateral recurrent paralysis leaves both cords in the paramedian position, allowing air to pass with little distress, under the influence of the cricothyroideus muscles [30], which are supplied by a ramus of the superior laryngeal nerve [31,32], and whose function is to oppose rotation of the thyroid cartilage at the cricothyroid joint which motion would narrow the glottis [33,34]. N egus goes on to say: 'It is incorrect to say in cases of complete recurrent paralysis the cadaveric position is taken up ' [35].…”

Section: The Effect O F Laryngeal Paralysis On the Lungmentioning

confidence: 99%

The Effects of Components of Vagotomy on the Lung and the Effects of Anesthesia on Vagotomy Induced Lung Change

Shanklin¹,

Sotelo‐Avila²

1967

Neonatology

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“…Numerous authO'rs consider it to' be most active during expiration (Mur tagh and Campbell, 1954;Tschiassny 1944; Nakamura et at., 1958;Siribodhi et aI., 1963;Shin et at., 1969;Suzuki et ai., 1970) whilst others consider it to be most active during inspiration (Andrew 1955· Armstrong andSmith, 1955;F~borg: Anderson, 1957;Hiroto et al, 1964).…”

Section: The Cricothyroid Musclementioning

confidence: 99%