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Serial MRI in the early postoperative period after lumbar discectomy

Annertz, Mårten LU ; Jönsson, Bo LU ; Strömqvist, Björn LU and Holtås, Stig LU (1995) In Neuroradiology 37(3). p.177-182
Abstract
The aim of this study was to determine MRI findings in patients successfully operated upon for lumbar disc herniation. We investigated 20 patients with a successful outcome after L4-5 or L5-S1 disc operations clinically and with MRI preoperatively, and at 5 days, 6 weeks, and 4 months after surgery. Postoperatively, T1- and T2-weighted images were obtained. At 4 months gadolinium-enhanced images were added. Pronounced intraspinal MRI changes were seen during follow-up. Deformation of the dural sac was seen in 13 patients preoperatively, in 19 at 5 days after operation, in 15 at 6 weeks, and in 12 at 4 months. Nerve root involvement was seen in all cases both preoperatively and at 5 days after operation, in 17 at 6 weeks, and in 15 at 4... (More)
The aim of this study was to determine MRI findings in patients successfully operated upon for lumbar disc herniation. We investigated 20 patients with a successful outcome after L4-5 or L5-S1 disc operations clinically and with MRI preoperatively, and at 5 days, 6 weeks, and 4 months after surgery. Postoperatively, T1- and T2-weighted images were obtained. At 4 months gadolinium-enhanced images were added. Pronounced intraspinal MRI changes were seen during follow-up. Deformation of the dural sac was seen in 13 patients preoperatively, in 19 at 5 days after operation, in 15 at 6 weeks, and in 12 at 4 months. Nerve root involvement was seen in all cases both preoperatively and at 5 days after operation, in 17 at 6 weeks, and in 15 at 4 months. No correlation between symptoms or the straight leg raising test and the size or nature of the abnormal tissue in the spinal canal postoperatively could be demonstrated. It was concluded that early postoperative MRI after lumbar discectomy must be interpreted carefully, and that oedema and scar formation are probable reasons for difficulties in interpretation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Spine, Intervertebral discs, Surgery, MRI-Gadolinium
in
Neuroradiology
volume
37
issue
3
pages
177 - 182
publisher
Springer Verlag
external identifiers
  • pmid:7603590
  • scopus:0028948856
ISSN
1432-1920
DOI
10.1007/BF01578253
language
English
LU publication?
yes
id
3ca697a9-410f-4bc4-a501-130893d95780 (old id 1109293)
date added to LUP
2008-07-28 09:31:55
date last changed
2017-05-07 03:40:00
@article{3ca697a9-410f-4bc4-a501-130893d95780,
  abstract     = {The aim of this study was to determine MRI findings in patients successfully operated upon for lumbar disc herniation. We investigated 20 patients with a successful outcome after L4-5 or L5-S1 disc operations clinically and with MRI preoperatively, and at 5 days, 6 weeks, and 4 months after surgery. Postoperatively, T1- and T2-weighted images were obtained. At 4 months gadolinium-enhanced images were added. Pronounced intraspinal MRI changes were seen during follow-up. Deformation of the dural sac was seen in 13 patients preoperatively, in 19 at 5 days after operation, in 15 at 6 weeks, and in 12 at 4 months. Nerve root involvement was seen in all cases both preoperatively and at 5 days after operation, in 17 at 6 weeks, and in 15 at 4 months. No correlation between symptoms or the straight leg raising test and the size or nature of the abnormal tissue in the spinal canal postoperatively could be demonstrated. It was concluded that early postoperative MRI after lumbar discectomy must be interpreted carefully, and that oedema and scar formation are probable reasons for difficulties in interpretation.},
  author       = {Annertz, Mårten and Jönsson, Bo and Strömqvist, Björn and Holtås, Stig},
  issn         = {1432-1920},
  keyword      = {Spine,Intervertebral discs,Surgery,MRI-Gadolinium},
  language     = {eng},
  number       = {3},
  pages        = {177--182},
  publisher    = {Springer Verlag},
  series       = {Neuroradiology},
  title        = {Serial MRI in the early postoperative period after lumbar discectomy},
  url          = {http://dx.doi.org/10.1007/BF01578253},
  volume       = {37},
  year         = {1995},
}