To the person looking for documentation on scoliosis, I was looking at TCH's website and found this - "Long-term Outcome after Obstetric Brachial Plexus Injury -
Brachial plexus injuries cause severe functional deficits in the affected extremity. The full extent of the arm and hand deficits may not be known for several years. Additionally, upper body posture may be altered as a result of compensatory maneuvers used to deal with poor positioning of the shoulder and arm."