JHU – Quadrangular Space

Innervation in the quadrangular and triangular space of the shoulder


Anatomical plate


Educators and students of human anatomy


The spatial relationships of the posterior shoulder are complex and difficult to visualize. Nerves course between openings created by the boundaries of several overlapping muscles.

The purpose of this illustration is to introduce innovative storytelling techniques as a means to improve upon previous depictions of a challenging aspect of human anatomy. A few of the techniques used in this illustration are: 1) Anatomy shown in context of the figure; 2) Instructional color to visually organize innervation and correlate specific nerves with their anatomical windows of origin; 3) Metaphor to help the audience form an abstract mental image of key spatial relationships.


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