Revision 17 for 'Lateral triangular space'

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Lateral triangular space

The lateral triangular space, also called the triangular interval or lower triangular space 1 or triceps hiatus, is a space connecting the axilla to the posterior compartment of the arm. It should not be confused with the similarly named medial (upper) triangular space.

Gross anatomy

It is a downwards pointing triangle with a base superiorly and apex inferiorly.

Boundaries
Contents

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