Since Jan. 1, 1929, there have been sixty-six cases of unilateral subluxation of the cervical vertebrae without associated fracture seen in the fracture service of the Presbyterian Hospital. Of these, five were seen in the first three years and thirty-nine in the past eighteen months. This sudden and spectacular increase is due not to any change in the neck structure of New York's population but to the education of the members of the staff in the recognition of the condition. We feel, therefore, that it is of value to present this group of cases not in order to describe a new condition or method of treatment but to refresh the memory of the profession at large as to the characteristic picture these patients present and to set forth our experience in their treatment.
Of the sixty-six patients, thirty-six were male and thirty female. Fifty-two were between the ages of 10