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Delayed traumatic myelopathy following transfixion of the spinal cord by a knife blade. Case report.

✓ A 35-year-old man who was stabbed in the back suffered only transient paresthesia in one leg. He was asymptomatic until 21 years later when, following a minor automobile accident, progressive myelopathy developed. Eight years later he showed a Brown-Sequard syndrome with a T-7 sensory level. At T-6 a knife blade was found that had transfixed the spinal cord; its removal was followed by some improvement in the neurological deficit. Comparable cases are reviewed. A second usually minor trauma may trigger a rapidly progressive neurological deficit.