To disclose potential risk factors for sustaining a fractured clavicle in the newborn. A retrospective case-control analysis of women who gave birth to an infant with a fractured clavicle during a four-year period (2003-2006) was performed. A control group of newborns who did not sustain a fractured clavicle was formed (2:1) matched for maternal age, parity and gestational age at delivery. The rate of fractured clavicle was 0.35%. Heavier newborns' birth weight (3632.9 ± 376.1 g vs. 3429.5 ± 513.0 g, P < 0.05) and the use of oxytocin (91.3% vs. 69.5%, P < 0.05) were associated with the occurrence of fractured clavicle during birth. Fractured clavicle was not well correlated with maternal height, maternal pregestational body mass index, maternal body mass index at delivery, maternal weight gain during pregnancy, induction of labor, duration of the second stage of labor, instrumental delivery or newborn birth weight of more than 4000 g. We could not identify significant risk factors that could be dealt with in order to avoid a fractured clavicle being sustained during birth. Most fractured clavicles occur in normal newborns following normal labor and delivery.