What is PRI's understanding of femoral acetabular impingement (FAI)?

• A. FAI is solely a fixed bony deformity unrelated to movement patterns.
• B. FAI is caused by overuse injuries in athletes with no structural changes.
• C. FAI cannot be managed by movement changes.
• D. FAI arises from pattern that causes bony deformities; forces at the hip joint stimulate bone growth; changes in acetabular position can minimize impact.

Answer: (D)