Brachial plexus injury occurs in many children a year while they are being born. This particular type of injury occurs when the doctor mistakenly or through a misjudgment pulls on the child's arms or hands while the child is being born. This action will result in the nerves running through the hand and arm receiving damage. It can lead to numerous problems, the worst of which is paralysis of the arm. Other injuries may include decreased feeling in the hand or in the arm in total. In some situations, the muscle control in the arm can be lost. If the shoulder is stretches or pulled significantly, this injury is lasting and can be permanent. In many instances, it is highly preventable as well.