SummaryPost-mortem microangiography has been performed in 12 patierUs with traumatic cervical cord injury, 2 patients with myelopathy, and one patient with post traumatic syringomyelia.Microangiography defined 4 zones in the injured spinal cord. In traumatic injury, the size and extent of the non-filling area (Zone 1) was directly related to the injury force. Subsequently these areas became cavitated. Surrounding the non-filling area, widely extending areas demonstrated filling of capillaries but showed damaged neurons and axons (Zone 2). In the chronic stage, Zone 2 replaced by gliomesenchymal tissue. The capillaries in the gliomesenchymal scars revealed a distorted abnormal arrangement (Zone 3).In a case with myelopathy, the hypervascular areas (Zone 4) were observed just around the chronically compressed area. The vascular increases were considered to be a reaction against chronic compression.In a patient with post-traumatic syringomyelia, the vascular network of the poster ior grey matter disappeared and the central arteries were distorted by the distending forces of the syrinx. The microangiographs suggested that vascular factors might play a significant role in original cavity formation; but in cavity extension, these factors were not primary. Key words: Spinal cord injury; Microangiography; Myelopathy, Post-traumatic syringomyelia; Autopsy studies.Regarding pathological studies of spinal cord injury, Wolman (1965), Bedbrook (1966, Kakulus (1976), Jellinger (1976, Kinoshita (1977) and others have reported on the pathology of traumatic spinal cord injury.Microangiography can demonstrate alterations in the small blood vessels of the central nervous system. Turnbull (1966), Crock (1977, Mannen (1963) and others have showed microangiographs of the spinal cord from unselected cada vers. Studies on the microangiography of spinal cord lesions in man are lacking.

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