You walked into Mount Sinai or NYU Langone expecting the happiest day of your life. Instead, the obstetrician struggled with a difficult delivery, your baby's shoulder got stuck behind your pubic bone, and the doctor pulled. Now your child's arm hangs limp at the shoulder, can't grip a bottle, and the pediatric neurologist is using words like "brachial plexus" and "permanent." If you're living through this, you need to understand what an Erb's palsy birth injury is worth in N