The relation between umbilical cord characteristics and the outcome of external cephalic version.

Background: Umbilical cords of fetuses in breech presentation differ in length and coiling from their cephalic counterparts and it might be hypothesised that these cord characteristics may in turn affect ECV outcome.

Aim: To investigate the relation between umbilical cord characteristics and the outcome of external cephalic version (ECV).

Study Design: Prospective cohort study.