✓ A firecracker exploded in contact with the skin and within 6 inches of the base of the skull of a young man while he was swimming underwater. The resultant severe head injury and death appeared to be directly related to the underwater explosion. Reconstruction of the mechanics of this injury indicates that when the head is subjected to impact energies between 440 to 1800 in.-lb and impact impulses between 1.8 to 3.5 lb/sec, both skull fracture and brain injury can occur.
Arthur E. Hirsch and Ayub K. Ommaya
John Coe and Ayub K. Ommaya
Thomas P. Krueger, James McFarland and Ayub K. Ommaya
John E. Coe, Paul Dirlik and Ayub K. Ommaya
John L. Doppman, Giovanni Di Chiro and Ayub K. Ommaya
✓ A technique is described for embolically occluding the feeding arteries of spinal cord arteriovenous malformations by non-operative means. Following the identification of each feeder by selective arteriography, a system of coaxial catheters is introduced percutaneously and each feeding artery is occluded within the spinal canal using metallic pellets, gelfoam, and muscle fragments. Technical details of the procedure are described and the choice of embolic material discussed. Embolization has been successfully accomplished in five patients. None were made worse, and three have shown progressive neurological improvement. The simplicity of the procedure and the absence of morbidity are stressed. Percutaneous embolization should be considered as an alternative to operative ligation of feeding arteries.
Fred H. Faas and Ayub K. Ommaya
Ayub K. Ommaya and Maitland Baldwin
Ayub K. Ommaya, John W. Boretos and Ernest E. Beile
Norman Peters and Ayub K. Ommaya
✓ A lightweight adjustable double microvascular clamp is described that requires only one adjustment before application for anastomosis of arteries.