Criteria for diagnosis of lumbar spinal canal stenosis

ABSTRACT

Anatomical and radiological measurements of anteroposterior and interpediculate diameters of lumbar spinal canal was carried out on 50 cadaveric specimens and 100 plain X-ray films. Studying the configuration of the canal was possible by plotting curves of anteroposterior diameters versus interpedicular diameters and the reverse. Such curves correlate both dimensions to each other. Measurements not coinciding with the lower normal dimensional limits of the curves or not correlated with each other were taken as an indication of stenotic lumbar spinal canal