Triangular space: Difference between revisions

Revision as of 23:55, 9 February 2025

Anatomical region of the human body

Triangular space

The triangular space is an anatomical region of the upper limb, specifically located in the shoulder area. It is one of the several spaces formed by the muscles and bones of the shoulder, and it is important for its role in allowing the passage of neurovascular structures.

Anatomy

The triangular space is bordered by the following structures:

Superiorly by the teres minor muscle.
Inferiorly by the teres major muscle.
Laterally by the long head of the triceps brachii muscle.

The triangular space does not contain any major nerves or arteries, but it allows the passage of the circumflex scapular artery, which is a branch of the subscapular artery.

Function

The primary function of the triangular space is to provide a passageway for the circumflex scapular artery. This artery supplies blood to the scapular region, contributing to the vascular network that supports the shoulder muscles and surrounding tissues.

Clinical significance

The triangular space is of clinical importance because it can be involved in certain shoulder pathologies. For instance, compression or injury to the structures passing through or near this space can lead to vascular compromise or contribute to shoulder pain syndromes.

Related anatomical spaces

The triangular space is often discussed in conjunction with other nearby anatomical spaces, such as:

The quadrangular space, which transmits the axillary nerve and the posterior circumflex humeral artery.
The triangular interval, which allows passage of the radial nerve and the profunda brachii artery.

Related pages

Gallery

Diagram showing the axillary spaces, including the triangular space.
Illustration of the scapular and circumflex arteries.
Anatomical spaces of the shoulder region.

References

Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2013). Clinically Oriented Anatomy. 7th edition. Lippincott Williams & Wilkins.
Drake, Richard L.; Vogl, Wayne; Mitchell, Adam W. M. (2014). Gray's Anatomy for Students. 3rd edition. Churchill Livingstone.

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-'''Triangular space''' is a region in the [[axilla]], or armpit area, of the human body. It is one of three spaces in the axilla, the other two being the [[quadrangular space]] and the [[triangular interval]]. The triangular space is bordered by the [[teres major muscle]], the [[teres minor muscle]], and the long head of the [[triceps brachii muscle]].
+{{Short description|Anatomical region of the human body}}
+{{Use dmy dates|date=October 2023}}
+== Triangular space ==
+The '''triangular space''' is an anatomical region of the upper limb, specifically located in the shoulder area. It is one of the several spaces formed by the muscles and bones of the shoulder, and it is important for its role in allowing the passage of neurovascular structures.
 == Anatomy ==
+The triangular space is bordered by the following structures:
+* Superiorly by the [[teres minor]] muscle.
+* Inferiorly by the [[teres major]] muscle.
+* Laterally by the long head of the [[triceps brachii]] muscle.
-The triangular space is a small, triangular gap located in the posterior axilla. It is bordered by:
+The triangular space does not contain any major nerves or arteries, but it allows the passage of the circumflex scapular artery, which is a branch of the subscapular artery.
-* Superiorly: the [[teres minor muscle]]
-* Inferiorly: the [[teres major muscle]]
-* Laterally: the long head of the [[triceps brachii muscle]]
-The [[circumflex scapular artery]], a branch of the [[subscapular artery]], passes through the triangular space.
+== Function ==
+The primary function of the triangular space is to provide a passageway for the circumflex scapular artery. This artery supplies blood to the scapular region, contributing to the vascular network that supports the shoulder muscles and surrounding tissues.
 == Clinical significance ==
+The triangular space is of clinical importance because it can be involved in certain shoulder pathologies. For instance, compression or injury to the structures passing through or near this space can lead to vascular compromise or contribute to shoulder pain syndromes.
-Due to the passage of the circumflex scapular artery through the triangular space, injury to this area can lead to significant bleeding. Furthermore, the close proximity of the triangular space to the [[brachial plexus]] and [[axillary artery]] means that injury to this area can also result in nerve damage and further vascular injury.
+== Related anatomical spaces ==
+The triangular space is often discussed in conjunction with other nearby anatomical spaces, such as:
+* The [[quadrangular space]], which transmits the axillary nerve and the posterior circumflex humeral artery.
+* The [[triangular interval]], which allows passage of the radial nerve and the profunda brachii artery.
-== See also ==
+== Related pages ==
+* [[Shoulder anatomy]]
+* [[Axillary space]]
+* [[Teres major]]
+* [[Teres minor]]
-* [[Axilla]]
+== Gallery ==
-* [[Quadrangular space]]
+<gallery>
-* [[Triangular interval]]
+File:Axillary_space.png|Diagram showing the axillary spaces, including the triangular space.
-* [[Teres major muscle]]
+File:Gray524.png|Illustration of the scapular and circumflex arteries.
-* [[Teres minor muscle]]
+File:Gray412-spaces.png|Anatomical spaces of the shoulder region.
-* [[Triceps brachii muscle]]
+</gallery>
-* [[Circumflex scapular artery]]
-* [[Subscapular artery]]
-* [[Brachial plexus]]
-* [[Axillary artery]]
-[[Category:Anatomy]]
+== References ==
-[[Category:Medical terminology]]
+* Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2013). ''Clinically Oriented Anatomy''. 7th edition. Lippincott Williams & Wilkins.
-[[Category:Human body]]
+* Drake, Richard L.; Vogl, Wayne; Mitchell, Adam W. M. (2014). ''Gray's Anatomy for Students''. 3rd edition. Churchill Livingstone.
-{{stub}}
+[[Category:Anatomy of the upper limb]]