In a previous publication1 attention was directed to a series of cases in which radicular pain radiating to the shoulder girdle, the arm and the precordium originated in the cervical portion of the spinal column and was due to arthritic changes. The symptoms and the diagnosis were discussed, and a suspension type of traction therapy was suggested. It was further suggested that overhead traction was of distinct value as a diagnostic aid. Particular attention was directed to the precordial reference of cervical radicular pain and to the necessity for differentiating this type of pain from true anginal pain.
Since this earlier publication, it has been possible to study a much larger group of cases of the condition described, and an opportunity has presented itself to study and observe many other conditions which simulate this one in the syndrome produced. It was accordingly deemed advisable to supplement the previous publication