Digastric triangle
Last revised by Travis Fahrenhorst-Jones on 10 Sep 2021
Citation, DOI, disclosures and article data
Citation:
Kanagarajah A, Fahrenhorst-Jones T, Hacking C, Digastric triangle. Reference article, Radiopaedia.org (Accessed on 16 Apr 2024) https://doi.org/10.53347/rID-54109
rID:
54109
Article created:
22 Jun 2017,
Arjna Kanagarajah
Disclosures:
At the time the article was created Arjna Kanagarajah had no recorded disclosures.
View Arjna Kanagarajah's current disclosures
Last revised:
10 Sep 2021,
Travis Fahrenhorst-Jones ◉
Disclosures:
At the time the article was last revised Travis Fahrenhorst-Jones had no recorded disclosures.
View Travis Fahrenhorst-Jones's current disclosures
Revisions:
4 times, by
3 contributors -
see full revision history and disclosures
Systems:
Sections:
The digastric triangle is one of the paired triangles in the anterior triangle of the neck. The triangles of the neck are surgically focussed, first described from early dissection-based anatomical studies which predated cross-sectional anatomical description based on imaging (see deep spaces of the neck).
Boundaries
- anteroinferiorly: anterior belly of digastric
- posteroinferiorly: posterior belly of digastric
- base: mandible
- floor: mylohyoid, hyoglossus and middle pharyngeal constrictor
- roof: skin, superficial fascia, platysma and deep fascia
Contents
- anterior part of the triangle contains the submandibular gland
- posterior part of the triangle contains the lower part of the parotid gland
- facial artery is deep to the submandibular gland and the facial vein lies superficial to the gland
- submandibular lymph nodes are situated near the gland
- external carotid artery lies deep to the parotid gland before entering it. It is separated from the internal carotid artery by the styloglossus and stylopharyngeus muscles and the glossopharyngeal nerve
- deep to the external carotid artery are the internal carotid artery, internal jugular vein and the vagus nerve
- lying on the mylohyoid muscle are the submental and mylohyoid arteries and nerves
- the hypoglossal and mylohyoid nerves are also found in the digastric triangle
Vessels and lymphatics
- facial artery
- facial vein
- external carotid artery
- internal carotid artery
- internal jugular vein
- submental vessels
- mylohyoid vessels
- lymph nodes
Nerves
References
- 1. Paul Butler, Adam Mitchell, Jeremiah C. Healy. Applied Radiological Anatomy. ISBN: 9780521766661
- 2. Susan Standring, Henry Gray. Gray's Anatomy. ISBN: 9780808923718
- 3. Stephanie Ryan, Michelle McNicholas, Stephen J. Eustace. Anatomy for Diagnostic Imaging. ISBN: 9780702029714
- 4. Bari M. Logan, Ralph T. Hutchings. McMinn's Color Atlas of Foot and Ankle Anatomy. ISBN: 9780702051647
- 5. Mcminn. Last's Anatomy. ISBN: 9780729537520
Incoming Links
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