輪状甲状膜
WordNet
- a thin pliable sheet of material
- a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants (同)tissue layer
PrepTutorEJDIC
- (生物の)膜,皮膜
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2019/12/25 10:52:23」(JST)
[Wiki en表示]
| Cricothyroid ligament |
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The ligaments of the larynx. Antero-lateral view. |
| Details |
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| Identifiers |
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| Latin | Ligamentum cricothyreoideum |
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| FMA | 55233 |
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| Anatomical terminology [edit on Wikidata] |
The cricothyroid ligament (also known as the cricothyroid membrane or Cricovocal membrane ) is composed of two parts:
- the median cricothyroid ligament along the midline (a thickening of the cricothyroid membrane) and
- the lateral cricothyroid ligaments on each side (these are also called conus elasticus).
The median cricothyroid ligament is a flat band of white connective tissue that connects the front parts of the contiguous margins of the cricoid and thyroid cartilages. It is a thick and strong ligament, narrow above and broad below. Each lateral ligament is known as the conus elasticus.
The lateral cricothyroid ligament is overlapped on either side by laryngeal muscles.
The conus elasticus (which means elastic cone in Latin) is the lateral portion of the cricothyroid ligament.
The lateral portions are thinner and lie close under the mucous membrane of the larynx; they extend from the upper border of the cricoid cartilage to the lower margin of the vocal ligaments, with which they are continuous. The vocal ligaments may therefore be regarded as the free borders of each conus elasticus, and extend from the vocal processes of the arytenoid cartilages to the angle of the thyroid cartilage about midway between its upper and lower borders.
These anatomical structure have been called in many different ways in the past, thus generating confusion.
Clinical significance
This ligament is cut during emergency cricothyrotomy. This ligament's main purpose is to keep the cricoid and thyroid from traveling too far.
Additional images
Muscles, nerves and arteries of neck.Deep dissection. Anterior view.
References
This article incorporates text in the public domain from page 1078 of the 20th edition of Gray's Anatomy (1918)
Anatomy of the larynx |
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| Cartilage |
- major/unpaired: Epiglottis
- Thyroid
- Cricoid
- minor/paired: Arytenoid
- Vocal process
- Muscular process
- Corniculate
- Cuneiform
|
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| Ligaments/folds |
- extrinsic ligaments: Hyoepiglottic ligament
- Thyrohyoid membrane
- Lateral ligament
- Median ligament
- Thyroepiglottic ligament
- Cricotracheal ligament
- intrinsic ligaments, upper: Quadrangular membrane
- Aryepiglottic
- Vestibular ligament/Vestibular fold
- intrinsic ligaments, lower: Cricothyroid ligament
- Median
- Lateral/Conus elasticus
- Vocal ligament/Vocal folds
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| Laryngeal cavity |
- Laryngeal inlet
- Vestibule
- Rima vestibuli
- Ventricle
- Rima glottidis/Glottis
- Infraglottic cavity
|
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| Laryngeal muscles |
- Cricothyroid
- Cricoarytenoid
- Arytenoid
- oblique arytenoid
- transverse arytenoid
- Thyroarytenoid
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| Other |
- Cricothyroid articulation
- Cricoarytenoid articulation
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UpToDate Contents
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- 1. 緊急時の輪状甲状靭帯（軟骨間膜）切開emergency cricothyrotomy cricothyroidotomy [show details]
…provide inadequate access to the cricothyroid membrane. Step 3: Incise the cricothyroid membrane horizontally – Make a 1 cm horizontal incision in the cricothyroid membrane. Make the incision with care; …
- 2. Treatment and prognosis of pulmonary arterial hypertension in adults (group 1)treatment and prognosis of pulmonary arterial hypertension in adults group 1 [show details]
…pulmonary hypertension including vasopressors, inotropes, pulmonary vasodilators, and extracorporeal membrane oxygenation (ECMO). Patients with PAH and particularly those with significant right ventricular …
- 3. 気管領域の手術を行う際の麻酔管理anesthesia for tracheal surgery [show details]
…bronchoscopy, suspension microlaryngoscopy, or emergency JV via a catheter inserted through the cricothyroid membrane are : Respiratory rate (RR): 20 to 30 breaths per minute (bpm; physiologic tachypnea); >60 …
- 4. 経皮的気管穿刺換気法による針輪状甲状軟骨間膜切開needle cricothyroidotomy with percutaneous transtracheal ventilation [show details]
… cricothyroidotomy should be attempted in the central, lower portion of the membrane In fresh adult cadavers, the size of the cricothyroid membrane was found to vary from 8 to 19 mm (mean 13.7 mm) in the vertical …
- 5. 外傷のマネージメント：小児特有の懸念事項trauma management unique pediatric considerations [show details]
…children. A narrow tracheal diameter, a small distance between the tracheal rings, and a cricothyroid membrane that is not easily palpable combine to make needle cricothyroidotomy (to provide percutaneous…
English Journal
- Making cricothyroid membrane a part of routine pre-op airway assessment.
- Karmakar A, Kumar N.
- Journal of clinical anesthesia. 2019 Nov;57()74.
- PMID 30889509
- A Comparison of the Laryngeal Handshake Method Versus the Traditional Index Finger Palpation Method in Identifying the Cricothyroid Membrane, When Performed by Combat Medic Trainees.
- Moore A, Aden JK, Curtis R, Umar M.
- Journal of special operations medicine : a peer reviewed journal for SOF medical professionals. 2019 ;19(3)71-75.
- The laryngeal handshake method (LHM) may be a reliable standardized method to quickly and accurately identify the cricothyroid membrane (CTM) when performing an emergency surgical airway (ESA). However, there is currently minimal available literature evaluating the method. Furthermore, no previous C
- PMID 31539436
- [Clinical study about anatomical and functional reconstruction for frontolateral vertical partial laryngectomy with ultrathin titanium mesh and fascia flap from the strap muscles].
- Fu YH, Min X, Zhou WS, Long P, Xiong YP.
- Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology, head, and neck surgery. 2019 Oct;33(10)958-960.
- Array
- PMID 31623043
Japanese Journal
- 観血的気道確保 (特集 気道確保困難時の危機対応)
- 麻酔 = The Japanese journal of anesthesiology : 日本麻酔科学会準機関誌 67(1), 36-40, 2018-01
- NAID 40021437142
- CLINICAL REPORT : Accuracy of identifying the cricothyroid membrane in children using palpation
Related Links
- This study was carried out to compare the usual methods of anaesthetizing the vocal cords by the spray as you go" technique through the bronchoscope with the less commonly practiced method of injecting lignocaine through the cricothyroid membrane ...
- Uses of Ultrasound in Airway examination 1. Identification of the cricothyroid membrane in patients with predicted difficult airway for front of neck access 2. Localization of trachea and tracheal ring ...
- Medical definition of cricothyroid membrane: a membrane of yellow elastic tissue that is attached below to the cricoid cartilage, in front to the thyroid cartilage, and in back to the arytenoid cartilages and that forms the vocal ligaments ...
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