Anatom3DLateral intermuscular septum of arm
Septum intermusculare brachii laterale · Zevní mezisvalová přepážka paže
Fascia & connective tissue
Looks like
A sheet of fascia along the outer upper arm bone, separating the front and back muscles.
What it does
Divides the arm into compartments; the radial nerve passes through it.
Keeping it well
The radial nerve can be damaged here with fractures, causing wrist drop.