High offspring birthweight is the major risk factor for shoulder dystocia, constituting most cases. The positive association of birthweight with shoulder dystocia showed similar patterns across parities, but high birthweight parous women were at greater risk of shoulder dystocia compared with primiparous women.

Prior shoulder dystocia increased the risk of shoulder dystocia in the second delivery. However, offspring birthweight was by far the most important risk factor.

NYHETERGir overtidig svangerskap økt risiko for fastsittende skulder? 22 Overtidig svangerskap alene øker ikke risikoen for at barnets skuldre blir sittende fast under fødselen. Dette viser en ny norsk studie.