Stand in an upright position holding a resistance band in both hands.
Lift your affected arm out to the side.
Your arm should be at approximately 90° to your body.
Bend your elbow to a right angle.
Maintaining good posture and shoulder blade control, rotate your arm upwards from horizontal to vertical.
Your elbow should remain at a right angle and your upper arm should not move up or down.
Your posture should stay straight and your shoulder blades remaining back and down.
Slowly return to start position and repeat.
