Show simple item record

dc.contributor.authorHermansen, Erland
dc.contributor.authorAustevoll, Ivar Magne
dc.contributor.authorHellum, Christian
dc.contributor.authorStorheim, Kjersti
dc.contributor.authorMyklebust, Tor Åge
dc.contributor.authorAaen, Jørn Ståle
dc.contributor.authorBanitalebi, Hasan
dc.contributor.authorAnvar, Masoud D
dc.contributor.authorRekeland, Frode
dc.contributor.authorBrox, Jens Ivar
dc.contributor.authorFranssen, Eric
dc.contributor.authorWeber, Clemens
dc.contributor.authorSolberg, Tore
dc.contributor.authorHaug, Knut Jørgen
dc.contributor.authorGrundnes, Oliver
dc.contributor.authorBrisby, Helena
dc.contributor.authorIndrekvam, Kari
dc.description.abstractPurpose: To investigate changes in dural sac area after three different posterior decompression techniques in patients undergoing surgery for lumbar spinal stenosis. Summary of background data: Decompression of the nerve roots is the main surgical treatment for lumbar spinal stenosis. The aim of this study was to radiologically investigate three commonly used posterior decompression techniques. Methods: The present study reports data from one of two multicenter randomized trials included in the NORDSTEN study. In the present trial, involving 437 patients undergoing surgery, we report radiological results after three different midline retaining posterior decompression techniques: unilateral laminotomy with crossover (UL) (n = 146), bilateral laminotomy (BL) (n = 142) and spinous process osteotomy (SPO) (n = 149). MRI was performed before and three months after surgery. The increase in dural sac area and Schizas grade at the most stenotic level was evaluated. Three different predefined surgical indicators of substantial decompression were used: (1) postoperative dural sac area of > 100 mm2, (2) increase in the dural sac area of at least 50% and (3) postoperative Schizas grade A or B. Results: No differences between the three surgical groups were found in the mean increase in dural sac area. Mean values were 66.0 (SD 41.5) mm2 in the UL-group, 71.9 (SD 37.1) mm2 in the BL-group and 68.1 (SD 41.0) mm2 in the SPO-group (p = 0.49). No differences in the three predefined surgical outcomes between the three groups were found. Conclusion: For patients with lumbar spinal stenosis, the three different surgical techniques provided the same increase in dural sac area.en_US
dc.publisherSpringer Verlagen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleComparable increases in dural sac area after three different posterior decompression techniques for lumbar spinal stenosis: radiological results from a randomized controlled trial in the NORDSTEN studyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalEuropean spine journalen_US
dc.description.localcodeThis article is licensed under a Creative Commons Attribution 4.0 International Licenseen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal