she's a diva, she's super, she's supraspinatus
Introducing the first muscle of the rotator cuff crew… She’s a diva, she’s super, she’s supraspinatus! She is the first of the SITS muscles and for a good reason. She is the one who initiates abduction (the first 15 degrees to be exact). She hangs out in the supraspinatus fossa, which is