Triangular space

The triangular space is one of the three spaces found at the axillary space. The other two spaces are the quadrangular space and the triangular interval.

Boundaries

It has the following boundaries:

Inferior: the superior border of the teres major;
Lateral: the long head of the triceps;
Superior: Teres minor

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

Contents

It contains the scapular circumflex vessels.
Unlike the quadrangular space or the triangular interval, no major nerve passes through the triangular space.