Sydney Sanborn was a 9-pound baby whose shoulder was pinched in the birth canal, leaving her with brachial plexus palsy. She grew up favoring her right side. At age 11, she came to the Brachial Plexus Center at Cincinnati Children's, where she received surgery to allow her shoulder to rotate. While her ability to move improved, her comment to doctors that she "sometimes forgot to move her arm" when she danced led them to rethink how the arm communicates with the brain after a nerve injury.