Which tests are included in the rotator cuff tear test cluster?

The rotator cuff tear test cluster is a combination of clinical tests used to help diagnose a rotator cuff tear, particularly in the context of shoulder pain. The correct combination includes the Infraspinatus test, the Painful Arc test, and the Drop Arm test.

The Infraspinatus test specifically evaluates the strength of the infraspinatus muscle, which is one of the key rotator cuff muscles involved in shoulder external rotation. A weakness or pain during this test can indicate potential rotator cuff pathology.

The Painful Arc test assesses the range of motion of the shoulder and typically elicits pain during the mid-range of elevation (70 to 120 degrees) for individuals with rotator cuff tears. This is significant because it helps to differentiate between the types of shoulder pathology, as pain that occurs at the end ranges may suggest other issues.

The Drop Arm test evaluates the ability of a person to lower the arm from an elevated position smoothly. In cases of rotator cuff tears, particularly tears of the supraspinatus, there will often be a significant inability to control the descent of the arm, leading to a "drop," thereby revealing dysfunction in the rotator cuff.

This cluster of tests is valuable in clinical practice, as it allows