Abstract
In our daily neuroradiologic practice we encounter patients with lumgalgiae and sciaticae secondary to strain and walking, correlated to developmental narrowness of the lumbar canal as defined by Verbiest (57). I would like to express acknowledgements to all my collaborators of the neuroradiologic section of my department for having focused their attention on this condition, and especially to Dr. E. Babin, who contributed to the monography about “The Narrow Lumbar Canal” (Springer-Verlag, 1980). We are also deeply indebted to Prof. H. Verbiest who greatly helped us with his advices and his personal contribution in teaching during the international course held about this subject in 1978. We adopt his terminology and criteria for defining congenital stenosis, developmental stenosis, additional compressive agents, and acquired stenosis of the vertebral lumbar canal.