Abstract
Teratogen-induced herniation of the occipital lobes (encephalocele) associated with cranium bifidum in monkey fetuses (Macaca mulatta) were repaired by amputation and cranioplasty in utero or postnatally. Fetal allogeneic cranial bone which had been fresh frozen was used in conjunction with a bone paste to provide a protective covering of the neural tissue following repair of the encephalocele. The bone graft in those animals treated in utero or 1-2 weeks post-partum developed a strong union with the calvarium, provided good protection for the underlying dura and neural tissue, had a smooth surface, and provided good cosmetic-reconstructive results. In contrast, when the cranioplasty procedure was performed on infant monkeys at 2-3 months of age the bone graft was rejected.
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