locked twins

locked twins

a form of malpresentation in which a breech twin and a vertex twin become locked at the chin during labor and attempted delivery.
Farlex Partner Medical Dictionary © Farlex 2012

lock·ed twins

(lokt twinz)
A form of malpresentation in which a breech twin and a vertex twin become locked at the chin during labor and attempted delivery.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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References in periodicals archive ?
Complications in intrapartum and postpartum period include dysfunctional labour, locked twins, operative vaginal delivery, increased chances of caesarean delivery and postpartum haemorrhage (PPH).
Analysis of fresh stillbirths revealed that five were caused by anaemic cardiac failure, two by locked twins and one each resulted from eclampsia and diabetes.