Triangular interval

Triangular interval
Suprascapular and axillary nerves of right side, seen from behind. Triangular interval is labeled.)
The scapular and circumflex arteries. (Triangular interval is visible but not labeled.)
Anatomical terminology

The triangular interval (also known as the lateral triangular space, lower triangular space, and triceps hiatus) is a space found in the axilla. It is one of the three intermuscular spaces found in the axillary space. The other two spaces are: quadrangular space and triangular space.

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