Symptoms associated with rotator cuff tears:

Rotator cuff tears are tears of one, or more, of the four tendons of the rotator cuff muscles.

Rotator cuff tears are among the most common conditions affecting the shoulder.[1]

The tendons of the rotator cuff, not the muscles, are most commonly torn. Of the four tendons, the supraspinatus is most frequently torn; the tear usually occurs at its point of insertion onto the humeral head at the greater tuberosity.[2]
The most reliable symptom for determining a rotator cuff tear is probably the least common and is found when there is a complete rupture with detachment of the rotator cuff leading to the complaint of complete loss of function, such as, loss of the ability to actively move the arm away from the side of the body (loss of abduction). Fortunately this finding is rare and when tears are symptomatic, most tears present as pain with limitation of function, a non-specific complaint that cannot distinguish between tendinitis, bursitis or arthritis. The clinical picture of a completely detached tear is more clear-cut, while the more common shoulder problems greatly overlap in their clinical presentation.

Pain in the anterolateral aspect of the shoulder can be due to many causes, [4] symptoms may reflect pathology outside of the shoulder which cause referred pain to the shoulder from sites such as the neck, heart or gut.

Patient history will often include pain or ache over the front and outer aspect of the shoulder, pain aggravated by leaning on the elbow and pushing upwards on the shoulder (such as leaning on the armrest of a reclining chair), intolerance to overhead activity, pain at night when lying directly on the affected shoulder, pain when reaching forward (e.g. unable to lift a gallon of milk from the refrigerator). Weakness may be reported, but is often masked by pain and is usually found only through examination. With longer standing pain, the shoulder is favored and gradually loss of motion and weakness may develop which, due to pain and guarding are often missed by the patient and are only brought out during the examination.

Primary shoulder problems may cause pain over the deltoid muscle that is made worse by abduction against resistance, called the impingement sign. Impingement reflects pain arising from the rotator cuff but cannot distinguish between inflammation, strain, or tear. Patients may report their experience with the impingement sign when they report that they are unable to reach upwards to brush their hair or to reach in front to lift a can of beans up from an overhead shelf.