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    • Disc Prosthesis
    • Christian Hellum
    • Christian Hellum: Influence Statistics

      Christian Hellum

      Christian Hellum

      From Kysthospitalet in Hagevik, Orthopedic Department, Haukeland University Hospital (I.M.A., E.H., F.R., K.I.), and the Department of Clinical Medicine, University of Bergen ...

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      Christian Hellum:Expert Impact

      Concepts for whichChristian Hellumhas direct influence:Disc prosthesis,Disc replacement,Degenerative spondylolisthesis,Multidisciplinary rehabilitation,Lumbar spinal stenosis,Degenerative disc,Spine surgery,Instrumented fusion.

      Christian Hellum:KOL impact

      Concepts related to the work of other authors for whichfor which Christian Hellum has influence:Lumbar spinal stenosis,Low pain,Disc degeneration,Spine surgery,Degenerative spondylolisthesis,Mri findings,Oswestry disability.

      KOL Resume for Christian Hellum

      Year
      2021

      From Kysthospitalet in Hagevik, Orthopedic Department, Haukeland University Hospital (I.M.A., E.H., F.R., K.I.), and the Department of Clinical Medicine, University of Bergen (E.H., F.R., K.I.), Bergen, Møre and Romsdal Hospital Trust, Ålesund Hospital, Orthopedic Department, Ålesund (E.H.), the Oslo Center for Biostatistics and Epidemiology, Research Support Services (M.W.F.), the Research and Communication Unit for Musculoskeletal Health, Division of Clinical Neuroscience (K.S.), and the Department of Physical Medicine and Rehabilitation (J.I.B.), Oslo University Hospital, the Department of Physiotherapy, Oslo Metropolitan University (K.S.), the Medical Faculty (J.I.B.), the Division of Radiology and Nuclear Medicine, Institute of Clinical Medicine, Faculty of Medicine (T.B.), and the Institute of Clinical Medicine (H. Banitalebi), University of Oslo, Akershus University Hospital, Orthopedic Department (O.G.), Radiology, Unilabs Radiology (K.R.H.A.), and the Department of Radiology and Nuclear Medicine (T.B.) and the Division of Orthopedic Surgery (C.H.), Oslo University Hospital Ullevål, Oslo, the Institute of Clinical Medicine, University of Tromsø-the Arctic University of Norway, and the Norwegian Registry for Spine Surgery, University Hospital of North Norway, Tromsø (T.S.), the Orthopedic Department (E.F.) and the Department of Neurosurgery (C.W.), Stavanger University Hospital, and the Department of Quality and Health Technology, Faculty of Health Sciences, University of Stavanger (C.W.), Stavanger, and the Department of Diagnostic Imaging, Akershus University Hospital, Lorenskog (H. Banitalebi) - all in Norway; and the Spine Surgery Team, Department of Orthopedics, Sahlgrenska University Hospital, and the Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden (H. Brisby).

      Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway

      2020

      The Norwegian Registry for Spine Surgery, University Hospital of Northern Norway, Tromsø, Norway

      2019

      Division of Orthopaedic Surgery, Oslo University Hospital, 4950 Nydalen, 0424, Oslo, PB, Norway

      2018

      Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway.

      2017

      Department of Physical Medicine and Rehabilitation, University of Oslo, Oslo, Norway

      2016

      Norwegian Registry for Spine Surgery (NORspine), University Hospital of Northern Norway, Tromsø, Norway

      2014

      Orthopaedic Department, Clinic for Surgery and Neurology, Oslo University Hospital and University of Oslo, Oslo, Norway

      2013

      Clinic for Surgery and Neurology, Department of Orthopedics, Oslo University Hospital and University of Oslo, Oslo, Norway

      2012

      Department of Orthopaedics, Oslo University Hospital, University of Oslo, Kirkevn 166, 0407, Oslo, Norway

      2011

      Department of Orthopaedics, Oslo University Hospital and University of Oslo, Kirkevn 166, 0407 Oslo, Norway

      2010

      Department of Orthopaedics, Oslo University Hospital, and University of Oslo, Oslo, Norway (Mr Wilkens and Drs Grundnes, Hellum, and Storheim)

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      Sample of concepts for which Christian Hellum is among the top experts in the world.
      Concept World rank
      localised mri #5
      rated modic #5
      arthropathy posterior #5
      candidates disc #5
      arthropathy l5 #5
      facet posterior hiz #5
      candidates disc prosthesis #5
      l4 l5 facet #5
      arthropathy l3 #5
      findings l3 l4 #5
      reliability mri findings #5
      l5 s1 modic #5
      subjective disc #5
      l3 l4 facet #5
      l4 l5 prevalence #5
      s1 radiologists #5
      mri findings candidates #5
      modic disc findings #6
      l5 s1 prevalence #6
      noninferior decompression #6
      tdr multidisciplinary #6
      modic l3 l4 #6
      prevalence observers #7
      odi score decompressionalone #7
      decompression 94 #7
      trial nordsten #7
      reoperation decompressionalone #7
      fusion nordsten #7
      decompression noninferior #7
      noninferiority decompression #7
      nct02051374 #7
      decompressionalone decompression surgery #7
      analysis leg length #8
      odi low distress #8
      narcotics predicted #8
      disc prosthesis odi #8
      tdr lumbosacral spine #8
      rehabilitation low fabqw #8
      tdr treatment groups #8
      rehabilitation crossed #8
      movement patientreported outcomes #8
      low fabqw predictors #8
      points modic #8
      prosthesis odi #8
      fabq predicted #8
      low fabqw #8
      hiz l5 #8
      low fabq #8
      tdr movement #8
      lumbar spine tdr #8
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      Prominent publications by Christian Hellum

      KOL-Index: 13676

      OBJECTIVE: To compare the efficacy of surgery with disc prosthesis versus non-surgical treatment for patients with chronic low back pain.

      DESIGN: A prospective randomised multicentre study.

      SETTING: Five university hospitals in Norway.

      PARTICIPANTS: 173 patients with a history of low back pain for at least one year, Oswestry disability index of at least 30 points, and degenerative changes in one or two lower lumbar spine levels (86 patients randomised to surgery). Patients were treated ...

      Known for Disc Prosthesis | Low Pain | Surgery Patients | Oswestry Disability | Prolo Scale
      KOL-Index: 13217

      PurposeTo evaluate the effect of adding fusion to decompression in patients operated for lumbar spinal stenosis with a concomitant lumbar degenerative spondylolisthesis.MethodsAfter propensity score matching, 260 patients operated with decompression and fusion and 260 patients operated with decompression alone were compared. Primary outcome measures were leg and back pain [Numeric Rating Scale (NRS), 0–10] and Oswestry Disability Index (ODI, 0–100) at 12 months.ResultsAt 12-month ...

      Known for Lumbar Spinal Stenosis | Decompression Fusion | Degenerative Spondylolisthesis | Norwegian Registry | Spine Surgery
      KOL-Index: 11466

      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 blind, parallel group, placebo controlled, multicentre trial.

      SETTING: Hospital outpatient clinics at six hospitals in Norway.

      PARTICIPANTS: 180 patients with chronic low back pain, previous disc herniation, and type 1 (n=118) or type 2 (n=62) Modic changes enrolled ...

      Known for Antibiotic Treatment | Chronic Low | Placebo Patients | Pain Modic | Previous Disc Herniation
      KOL-Index: 11414

      BACKGROUND: The need for cost effectiveness analyses in randomized controlled trials that compare treatment options is increasing. The selection of the optimal utility measure is important, and a central question is whether the two most commonly used indexes - the EuroQuol 5D (EQ5D) and the Short Form 6D (SF6D) - can be used interchangeably. The aim of the present study was to compare change scores of the EQ5D and SF6D utility indexes in terms of some important measurement properties. ...

      Known for Oswestry Disability | Eq5d Sf6d | Chronic Low | Degenerative Disc Disease | Psychometric Properties
      KOL-Index: 10855

      BackgroundEvidence 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 whether pre-treatment multifidus muscle fat infiltration predicts outcome 2 years after treatment with TDR surgery or multidisciplinary rehabilitation, and 2) to compare changes in multifidus muscle fat infiltration from pre-treatment to 2-year follow-up between the ...

      Known for Multifidus Muscle | Fat Infiltration | Year Follow | Patients Lbp | Chronic Low
      KOL-Index: 10632

      BackgroundAssessment 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 Numeric Rating Scales (NRS) for leg pain and for back pain are commonly used patients reported outcome measurements (PROMs). Reporting the proportion of individuals with an outcome of clinical importance is recommended. Knowledge of the ability of PROMs to identify ...

      Known for Lumbar Spinal Stenosis | Reported Outcome | Norwegian Registry | Percentage Score | Nrs Pain
      KOL-Index: 9934

      CONTEXT: Chronic low back pain (LBP) with degenerative lumbar osteoarthritis (OA) is widespread in the adult population. Although glucosamine is increasingly used by patients with chronic LBP, little is known about its effect in this setting.

      OBJECTIVE: To investigate the effect of glucosamine in patients with chronic LBP and degenerative lumbar OA.

      DESIGN, SETTING, AND PARTICIPANTS: A double-blind, randomized, placebo-controlled trial conducted at Oslo University Hospital Outpatient ...

      Known for Chronic Low | 1 Year | Lumbar Osteoarthritis | Pain Lbp | Oral Glucosamine
      KOL-Index: 8628

      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 findings in chronic low back pain patients who were accepted candidates for disc prosthesis.

      METHODS: On pretreatment MRI of 170 patients (mean age 41 years; 88 women), three experienced radiologists independently rated Modic changes, disc findings and facet arthropathy at ...

      Known for Disc Prosthesis | Mri Findings | L4 L5 | Facet Arthropathy | Resonance Imaging
      KOL-Index: 8325

      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 evaluated the relative efficacy of these techniques at short and long-term.

      METHOD/DESIGN: A multicentre randomized controlled trial [the Spinal Stenosis Trial (SST) (part of the NORDSTEN study)] including 465 patients aged 18-80 years with neurogenic claudication or ...

      Known for Lumbar Spinal Stenosis | Nordsten Study | Controlled Trial | Decompression Techniques | Neurogenic Claudication
      KOL-Index: 7964

      ObjectiveTo examine whether combined magnetic resonance imaging (MRI) findings are related to the degree of disability and low back pain (LBP) in candidates for lumbar disc prosthesis surgery.Materials and methodsThis cross-sectional study included 170 disc prosthesis candidates (mean age 41 years; 88 women) with chronic non-radicular LBP and localized disc degeneration. Experienced radiologists rated Modic changes and disc findings at L4-S1 on pre-treatment MRIs. An MRI total score ...

      Known for Mri Findings | Lumbar Disc | L5 S1 | Pain Lbp | Modic Type
      KOL-Index: 7953

      BACKGROUND CONTEXT: Lumbar total disc replacement (TDR) is a treatment option for selected patients with chronic low back pain (LBP) that is non-responsive to conservative treatment. The long-term results of disc replacement compared with multidisciplinary rehabilitation (MDR) have not been reported previously.

      PURPOSE: We aimed to assess the long-term relative efficacy of lumbar TDR compared with MDR.

      DESIGN: We undertook a multicenter randomized controlled trial at five university ...

      Known for Disc Replacement | 8year Followup | Chronic Low | Randomized Controlled | Lumbar Total
      KOL-Index: 7739

      BACKGROUND: In patients with lumbar spinal stenosis and degenerative spondylolisthesis, it is uncertain whether decompression surgery alone is noninferior to decompression with instrumented fusion.

      METHODS: We conducted an open-label, multicenter, noninferiority trial involving patients with symptomatic lumbar stenosis that had not responded to conservative management and who had single-level spondylolisthesis of 3 mm or more. Patients were randomly assigned in a 1:1 ratio to undergo ...

      Known for Lumbar Spondylolisthesis | Decompression Fusion | Leg Pain | Surgery Degenerative | Spinal Stenosis
      KOL-Index: 7573

      IntroductionThe aim of this study was to compare the clinical outcome of spinal process osteotomy with two other midline-retaining methods, bilateral laminotomy and unilateral laminotomy with crossover, among patients undergoing surgery for lumbar spinal stenosis.MethodsThis cohort study was based on data from the Norwegian Registry for Spine Surgery (NORspine). Patients were operated on between 2009 and 2013 at 31 Norwegian hospitals. The patients completed questionnaires at admission ...

      Known for Spine Surgery | Lumbar Spinal | Comparative Effectiveness | Norwegian Registry | Unilateral Laminotomy
      KOL-Index: 6327

      STUDY DESIGN: A cohort study with 1-year follow-up.

      OBJECTIVE: To identify prognostic factors in patients with chronic nonspecific low back pain (LBP).

      SUMMARY OF BACKGROUND DATA: The factors (e.g., sociodemographical, low back-related, radiological, and biological) associated with persistent pain and disability for patients with chronic nonspecific LBP are uncertain. Furthermore, sparse information exists about the relationship between biological factors like impaired fasting glucose ...

      Known for Chronic Low | Pain Disability | Year Patients | Lumbar Osteoarthritis | Disc Degeneration
      KOL-Index: 6137

      Importance: Conflicting evidence and large practice variation are present in the surgical treatment of degenerative spondylolisthesis. More than 90% of surgical procedures in the United States include instrumented fusion compared with 50% or less in other countries.

      Objective: To evaluate whether the effectiveness of microdecompression alone is noninferior to decompression with instrumented fusion in a real-world setting.

      Design, Setting, and Participants: This multicenter comparative ...

      Known for Degenerative Spondylolisthesis | Instrumented Fusion | Oswestry Disability | Surgical Treatment | Lumbar Spinal

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      From Kysthospitalet in Hagevik, Orthopedic Department, Haukeland University Hospital (I.M.A., E.H., F.R., K.I.), and the Department of Clinical Medicine, University of Bergen (E.H., F.R., K.I.), Bergen, Møre and Romsdal Hospital Trust, Ålesund Hospit

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