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Browsing Bergen Open Research Archive by Author "Hellum, Christian"

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    • Adjacent Disc Degeneration After Lumbar Total Disc Replacement or Non-operative Treatment: A Randomized Study With Eight-year Follow-up 

      Furunes, Håvard; Hellum, Christian; Espeland, Ansgar; Brox, Jens Ivar; Småstuen, Milada C; Berg, Linda; Storheim, Kjersti (Peer reviewed; Journal article, 2018-12)
      Study Design. A randomized controlled multicenter trial with 8-year follow-up. Objective. The aim of this study was to assess the long-term development of adjacent disc degeneration (ADD) after lumbar total disc replacement (TDR) ...
    • Clinical outcome after surgery for lumbarspinal stenosis in patients with insignificantlower extremity pain. A prospective cohortstudy from the Norwegian registry for spine surgery 

      Hermansen, Erland; Myklebust, Tor Åge; Austevoll, Ivar Magne; Rekeland, Frode; Solberg, Tore; Storheim, Kjersti; Grundnes, Oliver; Aaen, Jørn Ståle; Brox, Jens Ivar; Hellum, Christian; Indrekvam, Kari (Peer reviewed; Journal article, 2019-01-22)
      Background: Spinal stenosis is a clinical diagnosis in which the main symptom is pain radiating to the lower extremities, or neurogenic claudication. Radiological spinal stenosis is commonly observed in the population and ...
    • 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 

      Hermansen, Erland; Austevoll, Ivar Magne; Hellum, Christian; Storheim, Kjersti; Myklebust, Tor Åge; Aaen, Jørn Ståle; Banitalebi, Hasan; Anvar, Masoud; Rekeland, Frode; Brox, Jens Ivar; Franssen, Eric; Weber, Clemens; Solberg, Tore; Haug, Knut Jørgen; Grundnes, Oliver; Brisby, Helena; Indrekvam, Kari (Journal article; Peer reviewed, 2020)
      Purpose: To investigate changes in dural sac area after three different posterior decompression techniques in patients undergoing surgery for lumbar spinal stenosis. Decompression of the nerve roots is the main surgical ...
    • Decompression alone versusdecompression with instrumental fusionthe NORDSTEN degenerativespondylolisthesis trial (NORDSTEN-DS); study protocol for a randomized controlled trial 

      Austevoll, Ivar Magne; Hermansen, Erland; Fagerland, Morten; Rekeland, Frode; Solberg, Tore; Storheim, Kjersti; Brox, Jens Ivar; Lønne, Greger; Indrekvam, Kari; Aaen, Jørn; Grundnes, Oliver; Hellum, Christian (Peer reviewed; Journal article, 2019-01-05)
      Background: Fusion in addition to decompression has become the standard treatment for lumbar spinal stenosis with degenerative spondylolisthesis (DS). The evidence for performing fusion among these patients is conflicting ...
    • Efficacy of antibiotic treatment in patients with chronic low back pain and Modic changes (the AIM study): double blind, randomised, placebo controlled, multicentre trial 

      Bråten, Lars Christian Haugli; Rolfsen, Mads Peder; Espeland, Ansgar; Wigemyr, Monica; Assmus, Jörg; Froholdt, Anne; Haugen, Anne Julsrud; Marchand, Gunn Hege; Kristoffersen, Per M; Lutro, Olav; Randen, Sigrun; Wilhelmsen, Maja; Winsvold, Bendik K S; Kadar, Thomas; Holmgard, Thor Einar; Vigeland, Maria Dehli; Vetti, Nils; Nygaard, Øystein Petter; Lie, Benedicte Alexandra; Hellum, Christian; Anke, Audny; Grotle, Margreth; Schistad, Ellina Iordanova; Skouen, Jan Sture; Grøvle, Lars; Brox, Jens Ivar; Zwart, John-Anker; Storheim, Kjersti (Peer reviewed; Journal article, 2019)
      Objective To assess the efficacy of three months of antibiotic treatment compared with placebo in patients with chronic low back pain, previous disc herniation, and vertebral endplate changes (Modic changes). Design Double ...
    • Facet arthropathy evaluation: CT or MRI? 

      Berg, Linda; Thoresen, Hanne; Neckelmann, Gesche F; Furunes, Håvard; Hellum, Christian; Espeland, Ansgar (Journal article; Peer reviewed, 2019)
      Objective To assess the reliability of lumbar facet arthropathy evaluation with computed tomography (CT) or magnetic resonance imaging (MRI) in patients with and without lumbar disc prosthesis and to estimate the reliability ...
    • Fat in the lumbar multifidus muscles - predictive value and change following disc prosthesis surgery and multidiciplinary rehabilitation in patients With chronic low back pain and degenerative disc: 2-year follow-up of a randomized trial 

      Storheim, Kjersti; Berg, Linda; Hellum, Christian; Gjertsen, Øivind; Neckelmann, Gesche F; Espeland, Ansgar; Keller, Anne; Norwegian Spine Study Group (Peer reviewed; Journal article, 2017-04-04)
      Background: Evidence is lacking on whether fat infiltration in the multifidus muscles affects outcomes after total disc replacement (TDR) surgery and if it develops after surgery. The aims of this study were 1) to investigate ...
    • Follow-up score, change score or percentage change score for determining clinical important outcome following surgery? An observational study from the Norwegian registry for Spine surgery evaluating patient reported outcome measures in lumbar spinal stenosis and lumbar degenerative spondylolisthesis 

      Austevoll, Ivar Magne; Gjestad, Rolf; Grotle, Margreth; Solberg, Tore; Brox, Jens Ivar; Hermansen, Erland; Rekeland, Frode; Indrekvam, Kari; Storheim, Kjersti; Hellum, Christian (Peer reviewed; Journal article, 2019-01-18)
      Background: Assessment of outcomes for spinal surgeries is challenging, and an ideal measurement that reflects all aspects of importance for the patients does not exist. Oswestry Disability Index (ODI), EuroQol (EQ-5D) and ...
    • Reliability of MRI findings in candidates for lumbar disc prosthesis 

      Berg, Linda; Neckelmann, Gesche; Gjertsen, Øivind; Hellum, Christian; Johnsen, Lars Gunnar; Eide, Geir Egil; Espeland, Ansgar (Peer reviewed; Journal article, 2012-07)
      Introduction: Limited reliability data exist for localised magnetic resonance imaging (MRI) findings relevant to planning of treatment with lumbar disc prosthesis and later outcomes. We assessed the reliability of such ...
    • Study-protocol for a randomized controlled trial comparing clinical and radiological results after three different posterior decompression techniques for lumbar spinal stenosis: the Spinal Stenosis Trial (SST) (part of the NORDSTEN Study) 

      Hermansen, Erland; Austevoll, Ivar Magne; Romild, Ulla Kristina; Rekeland, Frode; Solberg, Tore; Storheim, Kjersti; Grundnes, Oliver; Aaen, Jørn; Brox, Jens Ivar; Hellum, Christian; Indrekvam, Kari (Peer reviewed; Journal article, 2017-03-21)
      Background: There are several posterior decompression techniques for lumbar spinal stenosis (LSS). There is a trend towards performing less invasive surgical procedures, but no multicentre randomized controlled trials have ...

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