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Spinal fusion for deformity of the cervical spine was done in thirty-three patients with rheumatoid arthritis. The average follow-up was three years. The deformities present were atlano-axial subluxation, superior migration of the odontoid process into the foramen magnum, and subaxial subluxation of the vertebral bodies. We devised a classification of the(More)
The etiologic factors and pathologic findings in 38 patients with lumbar arachnoiditis are presented. Lumbar spine surgery and the injection of contrast materials prior to the diagnosis of this condition are considered the most important factors in its genesis. In this series, there was microscopic evidence of arachnoiditis ossificans in 3 patients and(More)
Low back pain patients' responses to the McGill Pain Questionnaire were factor analyzed using a method of factor extraction which, relative to the procedures employed in previous investigations, minimized distortion of the factor solution. Four factors were found which accounted for 51% of the total variance. Three of the factors were composed solely of(More)
Low back pain patients' responses to the McGill Pain Questionnaire (MPQ) were factor analyzed using the principal factor method and direct oblique rotation procedures. Four factors were extracted that accounted for 55% of the total variance. Coefficients of congruence were computed in order to relate the current factors with those extracted in a previous(More)
Ninety-four subjects were divided into 5 groups according to symptoms and radiologic findings to devise a test for immunoglobin levels and lymphocyte microstimulation. Cellular immunity to disk antigens can be demonstrated in disk degeneration which may be primary or secondary. The serum level of IgM, irrespective of the age of the individual was(More)