A BC or T4 pattern is often associated with insufficient trunk rotation; what compensatory movement does the thorax typically perform?

• A. The thorax will extend to compensate when trunk rotation is inadequate (BC or T4 pattern).
• B. The thorax will rotate more rapidly to compensate.
• C. The thorax will flex excessively.
• D. The thorax will remain completely stationary.

Answer: (A)