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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
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.date.accessioned2020-07-01T06:50:42Z
dc.date.available2020-07-01T06:50:42Z
dc.date.issued2020-06-18
dc.description.abstract<i>Purpose</i> - To investigate changes in dural sac area after three different posterior decompression techniques in patients undergoing surgery for lumbar spinal stenosis.<p><p> <i>Summary of background data</i> - 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.<p><p> <i>Methods</i> - 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) (<i>n</i> = 146), bilateral laminotomy (BL) (<i>n</i> = 142) and spinous process osteotomy (SPO) (<i>n</i> = 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 mm<sup>2</sup>, (2) increase in the dural sac area of at least 50% and (3) postoperative Schizas grade A or B.<p><p> <i>Results</i> - 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) mm<sup>2</sup> in the UL-group, 71.9 (SD 37.1) mm<sup>2</sup> in the BL-group and 68.1 (SD 41.0) mm<sup>2</sup> in the SPO-group (<i>p</i> = 0.49). No differences in the three predefined surgical outcomes between the three groups were found.<p><p> <i>Conclusion</i> - For patients with lumbar spinal stenosis, the three different surgical techniques provided the same increase in dural sac area.en_US
dc.identifier.citationHermansen, Austevoll, Hellum, Storheim, Myklebust, Aaen, Banitalebi, Anvar, Rekeland, Brox, Franssen, Weber, Solberg, Haug, Grundnes, Brisby, Indrekvam. Comparable 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 Study. European spine journal. 2020en_US
dc.identifier.cristinIDFRIDAID 1817503
dc.identifier.doi10.1007/s00586-020-06499-0
dc.identifier.issn0940-6719
dc.identifier.issn1432-0932
dc.identifier.urihttps://hdl.handle.net/10037/18727
dc.language.isoengen_US
dc.publisherSpringer Verlagen_US
dc.relation.journalEuropean spine journal
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Medical disciplines: 700en_US
dc.subjectVDP::Medisinske Fag: 700en_US
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.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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