Step 1 Study Topics: Rotator Cuff Muscles


This page is dedicated to compiling Step 1 study notes for the topic of rotator cuff muscles. This page is likely disorganized as it was made in haste.


Muscles form the “SITS” acronym:

Supraspinatus (innervated by supra scapular nerve):  performs abduction 

Infraspinatous (innervated by supra scapular nerve): perform external rotation 

Teres minor (innervated by the axillary nerve): Adduction and external rotation 

Subscapularis (innervated by the upper and lower subscapualr nerves): adduction and internal rotation. 



Page Updated: 04.08.2017