On the right side, vastus lateralis overactivity is associated with which hip position and what effect does the muscle have?

• A. The right hip is in external rotation and adduction; the VL externally rotates and prevents further adduction
• B. The right hip is in neutral position; the VL has no effect
• C. The right hip is in internal rotation and adduction; the VL internally rotates and acts as an abductor to prevent further adduction
• D. The right hip is flexed with external rotation; the VL acts to assist knee flexion

Answer: (C)