[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.
Service de Radiologie B, Hôpital Cochin, Paris.
A
A
Chevrot
A M
AM
Dupont
C
C
Vallée
F
F
Gires
M
M
Wybier
M
M
Ben Hamouda
G
G
Pallardy
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.