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

What type of joint issue might result in arm pallor when elevated during an assessment?

1. Shoulder impingement syndrome

2. Arterial compression

3. Venous thrombosis

4. Subacromial bursitis

The correct answer is: Arterial compression

The presence of arm pallor when elevated during an assessment is indicative of arterial compression. This phenomenon occurs because the elevated position of the arm may compress the blood vessels, particularly the arteries, restricting blood flow. When arterial flow is compromised, the skin may lose its normal color, leading to a pale appearance. This is especially relevant in conditions where anatomical structures or joint positions cause compression of the arteries, affecting circulation. Shoulder impingement syndrome, while related to pain and range of motion, primarily affects the shoulder joint and surrounding soft tissues, rather than causing noticeable changes in skin color due to circulation issues. Venous thrombosis usually presents with symptoms like swelling, redness, or warmth due to blood clot formation in the veins rather than pallor, and subacromial bursitis typically involves inflammation rather than directly impacting blood flow to the arm.