Quadrangular space
| Quadrangular space | |
|---|---|
 Suprascapular and axillary nerves of right side, seen from behind. Quadrangular space is the lateral space, labeled in green at center right. Axillary nerve is visible entering it. | |
 The scapular and circumflex arteries. (Quadrangular space is visible but not labeled. Posterior humeral circumflex artery is visible entering quadrangular space at center right.) | |
The quadrangular space (or quadrilateral space [of Velpeau] or foramen humerotricipitale) is an axillary space in the arm. This is a clinically important anatomic space in the arm. In the quadrangular space, the axillary nerve and posterior circumflex humeral artery can be compressed or damaged due to space-occupying lesions or disruption in the anatomy due to trauma. Symptoms include axillary nerve related weakness of the deltoid muscle in the case of any significant mass lesions in the quadrangular space.
Boundaries
It is bounded by:[1]
- above/superior: the teres minor.[2]
- below/inferior: the teres major
- medially: the long head of the triceps brachii
- laterally: the surgical neck of the humerus
Contents
It transmits the axillary nerve and posterior humeral circumflex artery.
See also
Additional images
-
Muscles on the dorsum of the scapula, and the Triceps brachii.
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- ↑ Anatomy photo:03:04-0101 at the SUNY Downstate Medical Center - "Scapular Region: Quadrangular Space of Scapular Region"
- ↑ Adam Mitchell; Drake, Richard; Gray, Henry David; Wayne Vogl (2005). Gray's anatomy for students. Elsevier/Churchill Livingstone. p. 649. ISBN 0-443-06612-4.
External links
- 141230158 at GPnotebook
- Quadrangular_space at the Duke University Health System's Orthopedics program
- Photo at umich.edu
- Diagram at wustl.edu
- Photo at tufts.edu
- Photo at ithaca.edu
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