Hermansen E, Moen G, Barstad J, Birketvedt R, Indrekvam K Laminarthrectomy as a surgical approach
for decompressing the spinal canal: assessment of preoperative versus postoperative dural sac cross-sectional
areal (DSCSA). Eur Spine J. 2013 Aug;22(8):1913-9. doi: 10.1007/s00586-013-2737-1. Epub 2013 Mar 15. Gå til artikkel
2014
Hermansen E, Moen G, Fenstad AM, Birketvedt R, Indrekvam K Spinous process osteotomy to facilitate the access to the spinal
canal when decompressing the spinal canal in patients with lumbar spinal stenosis. Asian Spine J. 2014 Apr;8(2):138-44. doi: 10.4184/asj.2014.8.2.138. Epub 2014 Apr 8. Gå til artikkel
2017
Austevoll IM, Gjestad R, Brox JI, Solberg TK, Storheim K, Rekeland F, Hermansen E, Indrekvam K, Hellum C The effectiveness of decompression alone compared with additional fusion for lumbar spinal stenosis with
degenerative spondylolisthesis: a pragmatic comparative non-inferiority observational study from the Norwegian Registry for Spine Surgery. Eur Spine J. 2017 Feb;26(2):404-413. doi: 10.1007/s00586-016-4683-1. Epub 2016 Jul 15. Gå til artikkel
Hermansen E, Romild UK, Austevoll IM, Solberg T, Storheim K, Brox JI, Hellum C, Indrekvam K Does surgical technique influence clinical outcome after lumbar spinal stenosis decompression?
A comparative effectiveness study from the Norwegian Registry for Spine Surgery. Eur Spine J. 2017 Feb;26(2):420-427. doi: 10.1007/s00586-016-4643-9. Epub 2016 Jun 4. Gå til artikkel
Hermansen E, Austevoll IM, Romild UK, Rekeland F, Solberg T, Storheim K, Grundnes O, Aaen J, Brox JI, Hellum C, Indrekvam K 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). BMC Musculoskelet Disord. 2017 Mar 21;18(1):121. doi: 10.1186/s12891-017-1491-7. Gå til artikkel
2018
Hermansen E, Indrekvam K Clinical and radiological results after three different posterior decompression techniques for lumbar spinal stenosis. In. University of Bergen. Mer informasjon
2019
Austevoll IM, Hermansen E, Fagerland M, Rekeland F, Solberg T, Storheim K, Brox JI, Lonne G, Indrekvam K, Aaen J, Grundnes O, Hellum C Decompression alone versus decompression with instrumental fusion the NORDSTEN degenerative spondylolisthesis trial (NORDSTEN-DS);
study protocol for a randomized controlled trial. BMC Musculoskelet Disord. 2019 Jan 5;20(1):7. doi: 10.1186/s12891-018-2384-0. Gå til artikkel
Austevoll IM, Gjestad R, Grotle M, Solberg T, Brox JI, Hermansen E, Rekeland F, Indrekvam K, Storheim K, Hellum C 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. BMC Musculoskelet Disord. 2019 Jan 18;20(1):31. doi: 10.1186/s12891-018-2386-y. Gå til artikkel
Hermansen E, Myklebust TÅ, Austevoll IM, Rekeland F, Solberg T, Storheim K, Grundnes O, Aaen JS, Brox JI, Hellum C, Indrekvam K Clinical outcome after surgery for lumbar spinal stenosis in patients with insignificant lower extremity pain. A prospective cohort
study from the Norwegian registry for spine surgery. BMC Musculoskelet Disord. 2019 Jan 22;20(1):36. doi: 10.1186/s12891-019-2407-5. Gå til artikkel
2020
Austevoll IM, Gjestad R, Solberg T, Storheim K, Brox JI, Hermansen E, Rekeland F, Indrekvam K, Hellum C Comparative Effectiveness of Microdecompression Alone vs Decompression Plus Instrumented Fusion in Lumbar Degenerative Spondylolisthesis. JAMA Netw Open. 2020 Sep 1;3(9):e2015015. doi: 10.1001/jamanetworkopen.2020.15015. Gå til artikkel
Hermansen E, Austevoll IM, Hellum C, Storheim K, Myklebust TÅ, Aaen J, Banitalebi H, Anvar M, Rekeland F, Brox JI, Franssen E, Weber C,
Solberg T, Haug KJ, Grundnes O, Brisby H, Indrekvam K 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. Eur Spine J. 2020 Sep;29(9):2254-2261. doi: 10.1007/s00586-020-06499-0. Epub 2020 Jun 18. Gå til artikkel
2021
Austevoll IM, Hermansen E, Fagerland MW, Storheim K, Brox JI, Solberg T, Rekeland F, Franssen E, Weber C, Brisby H, Grundnes O,
Algaard KRH, Böker T, Banitalebi H, Indrekvam K, Hellum C Decompression with or without Fusion in Degenerative Lumbar Spondylolisthesis. N Engl J Med. 2021 Aug 5;385(6):526-538. doi: 10.1056/NEJMoa2100990. Gå til artikkel
2022
Banitalebi H, Espeland A, Anvar M, Hermansen E, Hellum C, Brox JI, Myklebust TÅ, Indrekvam K, Brisby H, Weber C, Aaen J, Austevoll IM,
Grundnes O, Negård A Reliability of preoperative MRI findings in patients with lumbar spinal stenosis. BMC Musculoskelet Disord. 2022 Jan 15;23(1):51. doi: 10.1186/s12891-021-04949-4. Gå til artikkel
Hermansen E, Austevoll IM, Hellum C, Storheim K, Myklebust TÅ, Aaen J, Banitalebi H, Anvar M, Rekeland F, Brox JI, Franssen E, Weber C, Solberg TK,
Furunes H, Grundnes O, Brisby H, Indrekvam K Comparison of 3 Different Minimally Invasive Surgical Techniques for Lumbar Spinal Stenosis: A Randomized Clinical Trial. JAMA Netw Open. 2022 Mar 1;5(3):e224291. doi: 10.1001/jamanetworkopen.2022.4291. Gå til artikkel
Aaen J, Austevoll IM, Hellum C, Storheim K, Myklebust TÅ, Banitalebi H, Anvar M, Brox JI, Weber C,
Solberg T, Grundnes O, Brisby H, Indrekvam K, Hermansen E Clinical and MRI findings in lumbar spinal stenosis: baseline data from the NORDSTEN study. Eur Spine J. 2022 Jun;31(6):1391-1398. doi: 10.1007/s00586-021-07051-4. Epub 2021 Nov 19. Gå til artikkel
Austevoll IM, Ebbs E. Fusion Is Not a Safeguard to Prevent Revision Surgery in Lumbar Spinal Stenosis. JAMA Netw Open. 2022 Jul 1;5(7):e2223812. doi: 10.1001/jamanetworkopen.2022.23812. Gå til artikkel
Banitalebi H, Aaen J, Storheim K, Negard A, Myklebust TÅ, Grotle M, Hellum C, Espeland A, Anvar M, Indrekvam K, Weber C,
Brox JI, Brisby H, Hermansen E A novel MRI index for paraspinal muscle fatty infiltration: reliability and relation to pain and disability in lumbar spinal stenosis:
results from a multicentre study. Eur Radiol Exp. 2022 Jul 20;6(1):38. doi: 10.1186/s41747-022-00284-y. Gå til artikkel
Aaen J, Banitalebi H, Austevoll IM, Hellum C, Storheim K, Myklebust TÅ, Anvar M, Weber C, Solberg T,
Grundnes O, Brisby H, Indrekvam K, Hermansen E The association between preoperative MRI findings and clinical improvement in patients included in the NORDSTEN spinal stenosis trial. Eur Spine J. 2022 Oct;31(10):2777-2785. doi: 10.1007/s00586-022-07317-5. Epub 2022 Aug 5. Gå til artikkel
2023
Hermansen E, Myklebust TÅ, Weber C, Brisby H, Austevoll IM, Hellum C, Storheim K, Aaen J, Banitalebi H, Brox JI, Grundnes O, Rekeland F,
Solberg T, Franssen E, Indrekvam K Postoperative Dural Sac Cross-Sectional Area as an Association for Outcome After Surgery
for Lumbar Spinal Stenosis: Clinical and Radiological Results From the NORDSTEN-Spinal Stenosis Trial. Spine (Phila Pa 1976). 2023 May 15;48(10):688-694. doi: 10.1097/BRS.0000000000004565. Epub 2023 Feb 20. Gå til artikkel
Dybvik V, Hermansen E, Banitalebi H, Myklebust TÅ, Indrekvam K Is Repeated Preoperative Magnetic Resonance Imaging Necessary Before Planned Decompressive
Surgery for Lumbar Spinal Stenosis? Int J Spine Surg. 2023 Jun;17(3):449-453. doi: 10.14444/8469. Epub 2023 Mar 24. Gå til artikkel
Aaen, J., Banitalebi, H., Austevoll, I.M. et al. Is the presence of foraminal stenosis associated with outcome in lumbar spinal stenosis patients
treated with posterior microsurgical decompression. Acta Neurochir (Wien). 2023 Aug;165(8):2121-2129. doi: 10.1007/s00701-023-05693-5. Epub 2023 Jul 5. Gå til artikkel
Hellum C, Rekeland F, Småstuen MC, Solberg T, Hermansen E, Storheim K, Brox JI, Furunes H, Franssen E, Weber C,
Brisby H, Grundnes O, Algaard KRH, Böker T, Banitalebi H, Indrekvam K, Austevoll IM Surgery in degenerative spondylolisthesis: does fusion improve outcome in subgroups?
A secondary analysis from a randomized trial (NORDSTEN trial). Spine J. 2023 Nov;23(11):1613-1622. doi: 10.1016/j.spinee.2023.06.386. Epub 2023 Jun 22. Gå til artikkel
Indrekvam K, Bånerud IF, Hermansen E, Austevoll IM, Rekeland F, Guddal MH, Solberg TK, Brox JI, Hellum C, Storheim K The Norwegian degenerative spondylolisthesis and spinal stenosis (NORDSTEN) study: study overview, organization structure and study population. Eur Spine J. 2023 Dec;32(12):4162-4173. doi: 10.1007/s00586-023-07827-w. Epub 2023 Jul 3. Gå til artikkel
2024
Hagerup S, Brox JI, Banitalebi H, Indrekvam K, Myklebust TÅ, Hermansen E The Influence of Spinous Process Union on Clinical Outcomes After Spinous Process
Osteotomy for Lumbar Spinal Stenosis After 2 Years: A Secondary Analysis From the NORDSTEN-Study. Int J Spine Surg. 2024 Feb 27;18(1):47–53. doi: 10.14444/8576. Epub ahead of print. Gå til artikkel
Wänman J, Åkerstedt J, Banitalebi H, Myklebust TÅ, Weber C, Storheim K, Austevoll IM, Hellum C, Indrekvam K, Brisby H, Hermansen E The association between lumbar lordosis preoperatively and changes in PROMs for lumbar spinal stenosis patients 2 years after spinal surgery:
radiological and clinical results from the NORDSTEN-spinal stenosis trial. Eur Spine J. 2024 May;33(5):1950-1956. doi: 10.1007/s00586-024-08137-5. Epub 2024 Feb 22. Gå til artikkel
Banitalebi H, Hermansen E, Hellum C, Espeland A, Storheim K, Myklebust TÅ, Indrekvam K, Brisby H, Weber C, Anvar M, Aaen J, Negård A Preoperative fatty infiltration of paraspinal muscles assessed by MRI is associated with less improvement of leg pain 2 years after surgery
for lumbar spinal stenosis. Eur Spine J. 2024 May;33(5):1967-1978. doi: 10.1007/s00586-024-08210-z. Epub 2024 Mar 25. Gå til artikkel
Hermansen E, Myklebust TÅ, Austevoll IM, Hellum C, Storheim K, Banitalebi H, Indrekvam K, Brisby H Dural Sac Cross-sectional area change from preoperatively and up to 2 years after decompressive surgery
for central lumbar spinal stenosis: investigation of operated levels, data from the NORDSTEN study. Eur Spine J. 2024 Jun;33(6):2234-2241. doi: 10.1007/s00586-024-08251-4. Epub 2024 Apr 8. Gå til artikkel
Tronstad S, Haug KJ, Myklebust TÅ, Weber C, Brisby H, Austevoll IM, Hellum C, Storheim K, Aaen J, Banitalebi H, Brox JI, Grundnes O, Franssen E, Indrekvam K, Solberg T, Hermansen E Do patients with lumbar spinal stenosis benefit from decompression of levels with adjacent moderate stenosis? A prospective cohort study from the NORDSTEN study. Spine J. 2024 Jun;24(6):1015-1021. doi: 10.1016/j.spinee.2024.01.010. Epub 2024 Jan 23. Gå til artikkel
Kgomotso EL, Hellum C, Fagerland MW, Solberg T, Brox JI, Storheim K, Hermansen E, Franssen E, Weber C, Brisby H, Algaard KRH, Furunes H, Banitalebi H, Ljøstad I, Indrekvam K, Austevoll IM; Nordsten collaborators Decompression alone or with fusion for degenerative lumbar spondylolisthesis (Nordsten-DS): five year follow-up of a randomised, multicentre, non-inferiority trial. BMJ. 2024 Aug 7;386:e079771. doi: 10.1136/bmj-2024-079771. Gå til artikkel
Weber C, Hermansen E, Myklebust TÅ, Banitalebi H, Brisby H, Brox JI, Franssen E, Hellum C, Indrekvam K,
Harboe K, Rekeland F, Solberg T, Storheim K, Austevoll IM Comparison of Patients Operated for Lumbar Spinal Stenosis With and Without Spondylolisthesis: A
Secondary Analysis of the NORDSTEN Trials. Spine (Phila Pa 1976). 2024 Oct 1;49(19):1332-1338. doi: 10.1097/BRS.0000000000005038. Epub 2024 Jun 11. Gå til artikkel
Indrekvam K, Myklebust TÅ, Austevoll IM, Hermansen E, Banitalebi H, Bånerud IF, Weber C, Brisby H, Brox JI, Hellum C, Storheim K Responsiveness of the Oswestry Disability Index and Zurich Claudication Questionnaire in patients with lumbar spinal stenosis:
evaluation of surgically treated patients from the NORDSTEN study. Eur Spine J. 2024 Nov;33(11):4270-4280. doi: 10.1007/s00586-024-08440-1. Epub 2024 Aug 13. Gå til artikkel
2025
Åkerstedt J, Wänman J, Banitalebi H, Myklebust TÅ, Weber C, Storheim K, Hellum C, Indrekvam K, Hermansen E, Brisby H Change in Lumbar Lordosis After Decompressive Surgery in Lumbar Spinal Stenosis Patients and Associations With Patient-Related Outcomes Two Years After Surgery: Radiologic and Clinical Results From the NORDSTEN Spinal Stenosis Trial. Spine (Phila Pa 1976). 2025 Jan 1;50(1):40-45. doi: 10.1097/BRS.0000000000005037. Epub 2024 May 13. Gå til artikkel
Seip A, Hellum C, Fagerland MW, Solberg T, Brox JI, Storheim K, Hermansen E, Weber C, Brisby H, Banitalebi H, Furunes H, Indrekvam K, Ljøstad I, Austevoll IM Surgeon Recommendation and Outcomes of Decompression With vs Without Fusion in Patients With Degenerative Spondylolisthesis. JAMA Netw Open. 2025 Jan 2;8(1):e2453466. doi: 10.1001/jamanetworkopen.2024.53466. Gå til artikkel
Brisby H, Myklebust TÅ, Banitalebi H, Austevoll I, Aaen J, Storheim K, Hellum C, Franssen E, Indrekvam K, Hermansen E Adjacent Level Canal Area Changes up to Two Years After Lumbar Spinal Stenosis Decompressive Surgery. Spine (Phila Pa 1976). 2025 Apr 1;50(7):429-436. doi: 10.1097/BRS.0000000000005247. Epub 2024 Dec 25. Gå til artikkel
Banitalebi A; Rossvoll I; Banitalebi H; Myklebust TÅ; Hermansen E Comparing Spinopelvic Angles and Magnification on Supine MRI With Standing Radiographs in Lumbar Spinal Stenosis. Clin Spine Surg. 2025 Apr 29. doi: 10.1097/BSD.0000000000001814. Epub ahead of print. Gå til artikkel
Hermansen E, Indrekvam K, Franssen E, Myklebust TÅ, Austevoll IM, Hellum C, Storheim K, Bånerud IF, Ebbs EK, Aaen J, Banitalebi H, Brox JI, Weber C, Solberg T, Hjulstad A, Brisby H ISSLS Prize in Clinical Science 2025: A randomized trial on three different minimally invasive decompression techniques for lumbar spinal stenosis. Five years follow-up from the NORDSTEN-SST. Eur Spine J. 2025 May;34(5):1590-1599. doi: 10.1007/s00586-024-08514-0. Epub 2024 Oct 24. Erratum in: Eur Spine J. 2025 May;34(5):2044-2045. doi: 10.1007/s00586-024-08561-7. Gå til artikkel
Hermansen E, Indrekvam K, Franssen E, Myklebust TÅ, Austevoll IM, Hellum C, Storheim K, Bånerud IF, Ebbs EK, Aaen J, Banitalebi H, Brox JI, Weber C, Solberg T, Hjulstad A, Brisby H Correction to: ISSLS Prize in Clinical Science 2025: A randomized trial on three different minimally invasive decompression techniques for lumbar spinal stenosis. Five years follow‑up from the NORDSTEN‑SST. Eur Spine J. 2025 May;34(5):2044-2045. doi: 10.1007/s00586-024-08561-7. Erratum for: Eur Spine J. 2025 May;34(5):1590-1599. doi: 10.1007/s00586-024-08514-0. Gå til artikkel
Åkerstedt J, Wänman J, Banitalebi H, Myklebust TÅ, Weber C, Storheim K, Hellum C, Indrekvam K, Hermansen E, Brisby H Change in Lumbar Lordosis After Decompressive Surgery in Lumbar Spinal Stenosis Patients and Associations With Patient-Related Outcomes Two Years After Surgery: Radiological and Clinical Results from the NORDSTEN Spinal Stenosis Trial. Spine (Phila Pa 1976). 2025 May 15;50(10):E197. doi: 10.1097/BRS.0000000000005263. Epub 2025 Jan 20. Gå til artikkel
Brisby H, Hermansen E Invited Comment to Letter to the Editor Regarding the Manuscript "Adjacent Level Canal Area Changes up to 2 Years After Lumbar Spinal Stenosis Decompressive Surgery". Spine (Phila Pa 1976). 2025 Jul 1;50(13):E269. doi: 10.1097/BRS.0000000000005378. Epub 2025 Apr 30. Gå til artikkel
Hermansen E, Franssen E, Myklebust TÅ, Indrekvam K, Austevoll IM, Hellum C, Tronstad S, Storheim K, Aaen J, Banitalebi H, Brox JI, Ottar T, Solberg TK, Brisby H. No long term benefit of decompression of a borderline lumbar spinal stenosis level adjacent to a more stenotic index level. Eur Spine J. 2025 Jul 10. doi: 10.1007/s00586-025-09113-3. Epub ahead of print. Gå til artikkel
Franssen E, Weber C, Myklebust TÅ, Austevoll IM, Brisby H, Hellum C, Storheim K, Aaen J, Banitalebi H, Brox JI, Indrekvam K, Hermansen E Clinical Importance of Redundant Nerve Roots in Patients With Symptomatic Lumbar Spinal Stenosis: A Secondary Analysis of NORDSTEN Spinal Stenosis Trial Data. Spine (Phila Pa 1976). 2025 Jul 15;50(14):941-947. doi: 10.1097/BRS.0000000000005160. Epub 2024 Sep 26. Gå til artikkel
