It is one of the common causes of obstructed labor. It is seen in vaginal deliveries wherein the head is delivered through the vagina but the shoulders are trapped inside the womb. Complications include fetal brachial plexus injury, fetal fracture- of humerus or collar bone, hypoxic-ischaemic encephalopathy. In the expectant mother, complications include perineal tears followed by heavy bleeding after delivery.
Question: What is the name of the method that can help in the widening of the vagina?