Risk factors
> Breech and other malpresentations e.g. shoulder presentation
> Multiple gestation (usually the second born twin)
> Preterm labour + / - low birth weight < 2500 g
> Transverse, oblique and unstable lie (where the longitudinal axis of the fetus is changing repeatedly)
> High head at onset of labour + / - artificial rupture of the membranes
> Grand multiparity
> Polyhydramnios
> Abnormal placentation
> Fetal congenital anomalies
Procedure related
> Artificial rupture of the membranes
> Vaginal manipulation of the fetus with ruptured membranes
> External cephalic version
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