The document provides an overview of assessing the rotator cuff, including: 1) It describes the four muscles that make up the rotator cuff - supraspinatus, subscapularis, infraspinatus, and teres minor - and their functions. 2) Numerous clinical tests used to assess each muscle are outlined, such as Jobb's test for supraspinatus and Gerber's lift-off test for subscapularis. 3) Assessment involves taking a history, inspecting for deformities, and performing special tests like Codman's drop arm sign and the external rotation lag sign to isolate weaknesses in the rotator cuff muscles.