Right shoulder impingement occurs because the right scapula is abducted and anteriorly tipped, which is due to faulty rib positioning. Improving which side's zone of apposition improves right shoulder internal rotation?

• A. Right scapula is abducted and anteriorly tipped; improving the zone of apposition on the left side improves right shoulder internal rotation.
• B. Right scapula is depressed and posteriorly tipped; improving the zone on the right side reduces symptoms.
• C. Scapula is elevated and externally rotated; improving posture improves all rotations.
• D. Shoulder impingement is unrelated to rib positioning.

Answer: (A)