Any or all of these muscles may be paralyzed. Children with BPP are affected in different ways. It is a network of nerves. It conducts signals from the spine to the arm and hand. These signals cause the arm and hand muscles to move.
Most injuries occur during birth while moving through the birth canal.
The baby's neck and shoulders may be stretched too far apart, damaging or tearing nerves. The stretching or damage may be caused by forceps delivery in large babies. However, newborns of all sizes, including premature babies can have these injuries. Types of Damage Avulsion - the nerve is torn from the spine. Rupture - the nerve is torn, but not where it attaches to the spine.