Part 4 - External Rotation, Control and strength External rotation is your ability to turn your leg outward, open your hips, and maintain stability through movement. Think of stepping sideways, changing direction, or sitting cross legged - all rely on it. Strong external rotators protect your knees, enhance balance, and keep your hips moving freely instead of feeling restricted. When they’re weak, your knees absorb the stress. When they’re strong, your hips feel open, supported, and in sync with