Shoulder dystocia is a very serious obstetrical complication that occurs when one or both shoulders are too large to pass through the birth canal and become stuck behind the mother's pubic bone. When this happens the doctor is required to take immediate action and use necessary maneuvers to deliver the baby. This can result in fractures, permanent nerve damage and even paralysis. There are multiple signs that raise the risk for shoulder dystocia. The doctor can deliver the baby by C-section to avoid any permanent injuries.