INTRACRANIAL BIRTH TRAUMA IN VAGINAL BREECH DELIVERY: THE CONTINUED IMPORTANCE OF INJURY TO THE OCCIPITAL BONE

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Abstract
Between 1966 and 1976, postmortem examinations revealed significant intracranial birth trauma in 17 infants delivered breech first and in ten infants delivered head first; separation of the squamous and lateral parts of the occipital bone (occipital osteodiastasis) was found in five of the infants who died after breech delivery. The finding of the lesions in these infants is attributed to the adoption, since 1971, of a postmortem technique involving dissection of the suboccipital region before opening the skull. Review of earlier necropsy reports suggests that the lesion was sometimes missed. Analysis of the fresh stillbirths and neonatal deaths occurring in the 477 vaginal breech deliveries at the Hammersmith Hospital (1966 to 1976) showed that all neonatal deaths in infants weighing more than 3000 g at birth associated with intracranial birth trauma: 2 out of 3 had occipital osteodiastasis which seems to be more common than is generally recognized and is only found with careful autopsy technique.

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