What is a torn rotator cuff tendon like?

Painful and weak. A torn rotator cuff tendon is usually quite painful, especially at night or during forceful shoulder motion. The rotator cuff starts out as 4 individual muscle attached to the shoulder blade. As they approach there insertion onto the tuberosities of the humerus, they come together to make a tendonus cuff. When this cuff of tissue is torn, active shoulder motion becomes difficult. Needs surgery.
Rotator cuff tear. Most common complaints associated with a rotator cuff tendon tear include pain in the upper arm, increases with lifting or reaching, pain at night, and sometimes weakness with lifting.