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In order to study the type and number of CAT scan abnormalities of the lumbar spine that occur in asymptomatic people, 52 studies from a control population with no history of back trouble were mixed randomly with six scans from patients with surgically proven spinal disease, and all were interpreted by three neuroradiologists in a blinded fashion. Irrespective of age, 35.4% (26.6%, 51.0%, and 31.3%) were found to be abnormal. Spinal disease was identified in an average of 19.5% (23.8%, 22.7%, and 12.5%) of the under 40-year-olds, and it was a herniated nucleus pulposus in every instance. In the over 40-year-old age group, there was an average of 50% (29.2%, 81.5%, and 48.1%) abnormal findings, with diagnoses of herniated disc, facet degeneration, and stenosis occurring most frequently.
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Sam W. Wiesel
Nicholas F. Tsourmas
Henry L. Feffer
Spine
George Washington University
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Wiesel et al. (Sat,) studied this question.
www.synapsesocial.com/papers/6a0e4b13f2ec696b275db3a8 — DOI: https://doi.org/10.1097/00007632-198409000-00003