Anatom3DClavicular part of deltoid
Pars clavicularis musculi deltoidei · Klíčková část deltového svalu
Muscles
Looks like
The front head of the deltoid, from the outer third of the collarbone down to the outer upper arm bone.
What it does
Raises the arm forward and turns it inward.
Keeping it well
Worked by pressing and front raises. Pain here with the arm raised is more often from the rotator cuff underneath.