A rotator cuff strain is a tear to any of the four rotator cuff muscles in the shoulder and is common in throwing and racket sports. (sportsinjuryclinic.net)
There's another test you can do to assess the status of the supraspinatus, one of the four small rotator cuff muscles which runs along the top of the shoulder blade and inserts via the tendon at the top of the arm or humerus bone, and is involved in shoulder abduction. (fitnessandpower.com)
Shoulder Exercises performed with machines alone decreases the need for rotator cuff muscle stabilization leading to long term weakness. (exercisegoals.com)