 In most cases, the baby will deliver spontaneously. However, in about 30 of cases of those who manage to labour to the second stage fully dilated cervix, the obstetrician will have to assist delivery by the use of forceps or vacuum extraction instrumental delivery. There are two main situations where delivery needs assistance; fetal distress where the baby is suspected to be compromised, or failure to progress where the baby has not delivered after one hour of pushing. Unfortunately, instrumental delivery is associated with increased maternal and fetal problems, particularly arising from trauma to the tissues. Therefore, the identification of any new ways to increase the spontaneous delivery rate may decrease future complications. 