Rotator cuff tendinopathy/tendinosis is degeneration and/or disorganization of rotator cuff tendon tissues (generally because of overuse and repetitive activity). ” These names are occasionally applied interchangeably but in actual fact describe discrete ailments impacting certain anatomic structures in the shoulder – all of which can be commonly related to rotator cuff https://www.theorthopaedicandpainpractice.com/what-are-some-shoulder-pain-treatments/