Triangular space

Triangular space
Suprascapular and axillary nerves of right side, seen from behind. The axillary spaces are labeled in green. Triangular space is the medial space.
The scapular and circumflex arteries. (Triangular space is visible but not labeled.)
Anatomical terminology []

The triangular space (also known as the medial triangular space,upper triangular space, or medial axillary space or foramen omotricipitale) is an axillary space.

It should not be confused with the triangular interval.

It has the following boundaries:

For the superior border, some sources list the teres minor, while others list the subscapularis.

It contains the scapular circumflex vessels.

Unlike the quadrangular space or the triangular interval, no major nerve passes through the triangular space.