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What are locking twins?

Locking or locked twins is a rare condition in which during birth a fetus in a breech (feet-first) position becomes locked at the chin with his twin fetus who is in a vertex (head-first) position. Locked twins occur in about 1 in every 1,000 twin births and one in every 90,000 births overall. Locked twins can be identified on an ultrasound examination at the beginning of labor. In most cases, a Caesarean section will be recommended for delivering the babies.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.