Rotator cuff tendinitis affects the tendons and muscles that help move the shoulder joint. Pdf on dec 1, 2016, calero polanco c and others published tendinopatia del manguito rotador find, read and cite all the research you need on researchgate. The acromion can rub against or impinge on the tendon and the bursa, causing irritation and pain. Several factors contribute to degenerative, or chronic, rotator cuff tears. Supraespinoso infraespinoso redondo menor subescapular. If you have a degenerative tear in one shoulder, there is a greater likelihood of a rotator cuff tear in the opposite shoulder even if you have no pain in that shoulder. O manguito rotador constituise dos musculos supraespinal, infraespinal, redondo menor e subescapular sits, supraspinatus, infraspinatus, teres minor, subscapularis, junto com o biceps e triceps. Lesao do manguito rotadorbursite subacromial lesoes. Rotator cuff tears are a common injury among athletes, especially those who play baseball, tennis, and other throwing and racquetbased sports that use weight. I f t he rotator cuff is in volve d, the pain is usually in the front or o ut side of the shoulder. Its commonly developed by athletes playing sports that require lifting their. When you raise your arm to shoulder height, the space between the acromion and rotator cuff narrows.