[The dural sheath in the sitting and standing position during saccoradiculography. Apropos of 150 cases].
Lateral images were studied in the sitting and standing positions during a continuous series of 150 radiculographies, in patients presenting with a symptomatology suggestive of herniated disk or lumbar stenosis. In 67% of cases the dural sac was abnormally reduced at the level of the inter-somatic spaces, due to disk protrusion or intracanalar protrusion of posterior soft tissues. In 23% of cases, an absolute canalar stenosis with anterior-posterior decrease to less than 10 mn in the standing position existed. This was due in 65% of cases to an isolated or predominant posterior impression, the latter appearing in the standing position in only 55% of cases. Saccoradiculography is the only procedure allowing study of the dural cul-de-sac in the standing position. It should be carried out if a narrow lumbar canal is suspected clinically, even if investigations in the lying position, such as CT scan or MR imaging show normal canalar dimensions.
Chevrot
A
A
Service de Radiologie B, Hôpital Cochin, Paris.
Dupont
A M
AM
Vallée
C
C
Gires
F
F
Wybier
M
M
Ben Hamouda
M
M
Pallardy
G
G
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004388:Dura Mater / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D011859:Radiography; D012189:Retrospective Studies; D013126:Spinal Nerve Roots / Q000000981:diagnostic imaging*; D013130:Spinal Stenosis / Q000000981:diagnostic imaging* / Q000209:etiology
Etude du fourreau dural en position assise et debout au cours de la saccoradiculographie. A propos de 150 cas.