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MICROANGIOGRAPHY OF HUMAN FETAL SPINAL CORD

GIOVANNI DI CHIRO M.D., TIMOTHY HARRINGTON M.D.1, and LARRY C. FRIED M.D.2

1 Georgetown University Hospital, 38th and Reservoir Road, N.W., Washington, D. C. 20007.
2 Virginia Commonwealth University Medical College of Virginia, Division of Neurological Surgery, 1200 East Broad Street, Richmond, Virginia 23219.

This report deals with a microangiographic study of 69 human fetal spinal cords, as well as 19 cords from infants and children. The youngest fetus was 10 weeks old. The characteristic "hairpin" arrangement of the thoracic and lumbar radiculomedullary arteries is already evident in all our fetuses, including the smallest.

The anterior spinal artery shows a straight course in the younger fetuses to become tortuous in a number of older fetuses, term babies and younger children up to 2 years. The so-called "watershed areas" found in the anterior spinal artery in the adult are not clearly recognizable in the pre-birth cord.


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