Occurs in 0.5% of pregnancies
Likely secondary to the presenting fetal part not filling enough of the lower uterus and allowing<unk>  to present first during labor.
Risk factors
Low birth weight
Multiparity
Fetal malpresentation
Low birth weight
Multiparity
Fetal malpresentation
Umbilical cord prolapse
Emergent delivery
Shoulder dystocia
Omphalitis
Breech delivery
Preterm labor
Placental abruption
Perimortem cesarean delivery