<unk> , also known as reverse Wood's screw maneuver, is a secondary, rotational maneuver to deliver the baby in case of shoulder dystocia. The first<unk>  is the rotation of anterior shoulder under pubic symphysis by giving suprapubic pressure. As a result, the bisacromial diameter is rotated from anteroposterior to oblique lie. The obstetrician uses the right hand for performing this maneuver if the foetus is facing mother's right side, and vice versa. During first<unk> , fundal pressure should not be applied because it may cause uterine rupture or further impaction of the shoulder. If the first<unk>  does not disengage the shoulder, second<unk>  is performed. The second<unk>  is performed by inserting one hand vaginally behind the posterior aspect of anterior shoulder of the baby and rotating the shoulder towards the chest of the baby, shifting it from the midline (12 o clock) to 11 o clock or 1 o clock position. As a result, the baby's shoulder girdle is adducted and the diameter is reduced. The second<unk>  is more successful if it is combined with suprapubic pressure to facilitate vaginal rotation. This maneuver is painful and difficult for an unanesthetized mother. For primipara, an episiotomy may be performed before inserting the vaginal hand. The reverse Wood's screw maneuver is the same as second<unk>  except that it is performed on posterior shoulder and the rotation happens on an oblique plane. The most common complications of<unk>  are clavicular fracture and brachial plexus injury. There is a higher risk of neonatal injury in<unk>  than with the delivery of posterior shoulder. File:ShoulderDystociaFig1.Step 1: Index and middle fingers insertion with the hand opposite the baby's face File:ShoulderDystociaFig2.Step 2: Baby's head slightly tilted downward with the free hand File:ShoulderDystociaFig3.Step 3: Two fingers are placed on the humerus like a splint File:ShoulderDystociaFig4.Step 4: Baby's hand appears under the maternal pubic symphysis, allowing the anterior arm to be delivered
Rubin maneuver
LeCompte maneuver
Wright's maneuver
McRoberts maneuver
Credé's maneuver
Müller's maneuver
Wood's screw maneuver
Zavanelli maneuver