The cases studied were 17 from private practice and 72 from the orthopedic and neurologic services of the Los Angeles County Hospital. For statistical purposes they are regarded as one series.
Estimating the number of patients with fractures who passed through the orthopedic services at 14,000 (a conservative figure) in three years, the 72 patients with fracture-dislocation of the cervical portion of the spine admitted in the same three year period made only 0.5 per cent of the total.The majority (50.5 per cent) of the patients were in the age group from 20 to 39, and 79.7 per cent of them were men. The youngest was a baby of 7 months who had a fall on the head followed by paralysis and death; autopsy showed subluxation of the atlas. The oldest was a man of 72 who recovered from an automobile accident in which he sustained a dislocation
CLARK WA. FRACTURES AND DISLOCATIONS OF THE CERVICAL PORTION OF THE SPINE: WITH A REVIEW OF EIGHTY-NINE CASES. Arch Surg. 1941;42(3):537–549. doi:10.1001/archsurg.1941.01210090086007
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