[Epidural venography in the diagnosis of lumbar disease (author's transl)].

80 patients with back pain and sciatalgia were studied by plain-film of lumbosacral spine, radiculography and epidural phlebography; 30 of them were surgically controlled. Radiculographic and phlebographic specimens were compared and phlebography showed more sensibility and specificity in the study of extradural pathology. The analysis of the phlebographic alterations suggested a semeiologic criterion we think that could be usefully used in the study of osteoligamentous lesions in lumbosacral spine.