College of Massage Therapists of British Columbia (CMTBC) Practice Exam

What test should a therapist use if they suspect a dysfunctional subscapularis muscle?

1. Lift-Off Sign

2. Drop-Arm Test

3. Neer Impingement Test

4. Circumduction Test

The correct answer is: Lift-Off Sign

The correct answer is the Lift-Off Sign, which is specifically designed to assess the function of the subscapularis muscle, one of the rotator cuff muscles. This test evaluates the muscle's ability to internally rotate the arm, which is its primary function. In a clinical setting, if the therapist suspects that the subscapularis muscle is dysfunctional, the Lift-Off Sign can reveal weakness or pain during the movement, indicating potential injury or impairment of this muscle. On the other hand, the other tests mentioned focus on different areas of the shoulder or different muscle functions. The Drop-Arm Test assesses the integrity of the rotator cuff, particularly the supraspinatus muscle, and is not specific to the subscapularis. The Neer Impingement Test evaluates for impingement of the rotator cuff tendons, which may involve different muscles. Finally, the Circumduction Test is not a standardized test for assessing muscle dysfunction but rather evaluates the overall range of motion of the shoulder joint and could incorporate movements from various shoulder muscles. Therefore, the Lift-Off Sign is the most appropriate choice for evaluating suspected dysfunction in the subscapularis muscle.