Browsing NTNU Open by Author "Lønne, Greger"
Now showing items 1-16 of 16
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Accuracy and agreement of national spine register data for 474 patients compared to corresponding electronic patient records
Alhaug, Ole Kristian; Kaur, Simran; Dolatowski, Filip C; Småstuen, Milada Cvancarova; Solberg, Tore; Lønne, Greger (Peer reviewed; Journal article, 2022)Purpose Data quality is essential for all types of research, including health registers. However, data quality is rarely reported. We aimed to assess the accuracy of data in a national spine register (NORspine) and its ... -
Can a Successful Outcome After Surgery for Lumbar Disc Herniation Be Defined by the Oswestry Disability Index Raw Score?
Werner, David Andreas Thomas; Grotle, Margreth; Gulati, Sasha; Austevoll, Ivar Magne; Madsbu, Mattis Aleksander; Lønne, Greger; Solberg, Tore (Journal article; Peer reviewed, 2019)Study Design: Prospective multicenter cohort study. Objective: To investigate (1) the discriminative ability and cutoff estimates for success 12 months after surgery for lumbar disc herniation on the Oswestry Disability ... -
Characteristics and outcomes of patients who did not respond to a national spine surgery registry
Kaur, Simran; Alhaug, Ole Kristian; Dolatowski, Filip Celestyn; Solberg, Tore; Lønne, Greger (Peer reviewed; Journal article, 2023)Background Loss to follow-up may bias outcome assessments in medical registries. This cohort study aimed to analyze and compare patients who failed to respond with those that responded to the Norwegian Registry for Spine ... -
Comparative effectiveness of microdecompression and laminectomy for central lumbar spinal stenosis: Study protocol for an observational study
Nerland, Ulf Skule; Jakola, Asgeir Store; Solheim, Ole; Weber, Clemens; Rao, Vidar; Lønne, Greger; Solberg, Tore; Salvesen, Øyvind; Carlsen, Sven Magnus; Nygaard, Øystein Petter; Gulati, Sasha (Journal article; Peer reviewed, 2014)Introduction: This observational study is designed to test the equivalence between the clinical effectiveness of microdecompression and laminectomy in the surgical treatment of central lumbar spinal stenosis. Lumbar spinal ... -
Criteria for failure and worsening after surgery for lumbar spinal stenosis. A prospective national spine registry observational study
Alhaug, Ole Kristian; Dolatowski, Filip Celestyn; Solberg, Tore K.; Lønne, Greger (Peer reviewed; Journal article, 2021)Background context: Criteria for success after surgical treatment of lumbar spinal stenosis (LSS) have been defined previously; however, there are no clear criteria for failure and worsening after surgery as assessed by ... -
Effect of Spinal Cord Burst Stimulation vs Placebo Stimulation on Disability in Patients With Chronic Radicular Pain After Lumbar Spine Surgery: A Randomized Clinical Trial
Hara, Sozaburo; Andresen, Hege; Solheim, Ole; Carlsen, Sven Magnus; Sundstrøm, Terje; Lønne, Greger; Vangen-Lønne, Vetle; Taraldsen, Kristin; Tronvik, Erling Andreas; Øie, Lise Rystad; Gulati, Agnete Malm; Sagberg, Lisa Millgård; Jakola, Asgeir Store; Solberg, Tore; Nygaard, Øystein Petter; Salvesen, Øyvind; Gulati, Sasha (Peer reviewed; Journal article, 2022)Importance: The use of spinal cord stimulation for chronic pain after lumbar spine surgery is increasing, yet rigorous evidence of its efficacy is lacking. Objective: To investigate the efficacy of spinal cord burst ... -
Effectiveness of surgery for sciatica with disc herniation is not substantially affected by differences in surgical incidences among three countries: results from the Danish, Swedish and Norwegian spine registries
Lagerbäck, Tobias; Fritzell, Peter; Hägg, Olle; Nordvall, Dennis; Lønne, Greger; Solberg, Tore; Andersen, Mikkel Ø.; Eiskjær, Søren; Gehrchen, Martin; Jacobs, Wilco C.; van Hooff, Miranda L.; Gerdhem, Paul (Peer reviewed; Journal article, 2018)Purpose: Yearly incidence of surgery for symptomatic lumbar disc herniation varies and is 29/100,000 in Sweden, 46/100,000 in Denmark and 58/100,000 in Norway. This variation was used to study whether differences in surgical ... -
Impact of the number of previous lumbar operations on patient-reported outcomes after surgery for lumbar spinal stenosis or lumbar disc herniation
Riksaasen, Anniken S.; Kaur, Simran; Solberg, Tore; Austevoll, Ivar Magne; Brox, Jens Ivar; Dolatowski, Filip Celestyn; Hellum, Christian; Kolstad, Frode; Lønne, Greger; Nygaard, Øystein Petter; Ingebrigtsen, Tor (Peer reviewed; Journal article, 2023)Aims Repeated lumbar spine surgery has been associated with inferior clinical outcomes. This study aimed to examine and quantify the impact of this association in a national clinical register cohort. Methods This ... -
Incidental dural tears associated with worse clinical outcomes in patients operated for lumbar spinal stenosis
Alhaug, Ole Kristian; Dolatowski, Filip Celestyn; Austevoll, Ivar Magne; Mjønes, Sverre Markussen; Lønne, Greger (Peer reviewed; Journal article, 2022)Study design: Retrospective cohort study. Objective: Incidental dural (ID) tear is a common complication of spine surgery with a prevalence of 4-10%. The association between ID and clinical outcome is uncertain. Former ... -
Inter-and Intraobserver Agreement of Morphological Grading for Central Lumbar Spinal Stenosis on Magnetic Resonance Imaging
Weber, Clemens; Rao, Vidar; Gulati, Sasha; Kvistad, Kjell Arne; Nygaard, Øystein Petter; Lønne, Greger (Journal article; Peer reviewed, 2015)Study Design Validation study of a morphological grading system for central lumbar spinal stenosis. Objective To evaluate and validate the inter- and intraobserver agreement of a morphological grading system for central ... -
Lumbar spinal stenosis, assessing failure and worsening after surgery. Identifying predictive factors with critical use of data from a national spine registry (NORspine)
Alhaug, Ole Kristian (Doctoral theses at NTNU;2023:210, Doctoral thesis, 2023)Norsk sammendrag Spinal stenose er en vanlig lidelse som skyldes trang ryggmargskanal og karakteriseres av smerter i rygg og bein og redusert gangfunksjon. Operasjon er ofte nødvendig og spinal stenose er den hyppigste ... -
The Norwegian registry for spine surgery (NORspine): cohort profile
Mikkelsen, Eirik; Ingebrigtsen, Tor; Thyrhaug, Anette Moltu; Olsen, Lena Ringstad; Nygaard, Øystein Petter; Austevoll, Ivar Magne; Brox, Jens Ivar; Hellum, Christian; Kolstad, Frode; Lønne, Greger; Solberg, Tore (Peer reviewed; Journal article, 2023)Purpose To review and describe the development, methods and cohort of the lumbosacral part of the Norwegian registry for spine surgery (NORspine). Methods NORspine was established in 2007. It is government funded, ... -
Predictors for failure after surgery for lumbar spinal stenosis: a prospective observational study
Alhaug, Ole Kristian; Dolatowski, Filip Celestyn; Solberg, Tore; Lønne, Greger (Peer reviewed; Journal article, 2022)Background/context Some patients do not improve after surgery for lumbar spinal stenosis (LSS), and surgical treatment implies a risk for complications and deterioration. Patient selection is of paramount importance to ... -
Surgical Treatment of Degenerative Disk Disease in Three Scandinavian Countries: An International Register Study Based on Three Merged National Spine Registers
Andersen, Mikkel Østerheden; Fritzell, Peter; Eiskjær, Søren Peter; Lagerbäck, Tobias; Hägg, Olle; Nordvall, Dennis; Lønne, Greger; Solberg, Tore; Jacobs, Wilco; van Hooff, Miranda; Gerdhem, Paul; Gehrchen, Martin (Peer reviewed; Journal article, 2019)Study Design: Observational study of prospectively collected data. Objectives: Patients with chronic low back pain resistant to nonoperative treatment often face a poor prognosis for recovery. The aim of the current ... -
Surgical treatment of Lumbar Spinal Stenosis: X-stop vs Minimally Invasive Decompression Image assessment, treatment effects and health economic evaluations
Lønne, Greger (Doctoral thesis at NTNU;2015:96, Doctoral thesis, 2015)This dissertation is based on a randomized controlled Norwegian multicenter study and focuses on diagnosis and treatment of lumbar spinal stenosis (LSS), which is the most common reason for spinal surgery among the ... -
Virus transmission during orthopedic surgery on patients with COVID-19 – a brief narrative review
Basso, Trude; Dale, Håvard; Langvatn, Håkon; Lønne, Greger; Skråmm, Inge; Westberg, Marianne; Wik, Tina Strømdal; Witsø, Eivind (Peer reviewed; Journal article, 2020)Background and purpose — COVID-19 is among the most impactful pandemics that the society has experienced. Orthopedic surgery involves procedures generating droplets and aerosols and there is concern amongst surgeons that ...