Browsing Bergen Open Research Archive by Author "Indrekvam, Kari"
Now showing items 1-20 of 30
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Assessment of retention force and bone apposition in two differently coated femoral stems after 6 months of loading in a goat model
Harboe, Knut; Gjerdet, Nils Roar; Sudmann, Einar; Indrekvam, Kari; Søreide, Kjetil (Peer reviewed; Journal article, 2014-08-16)Background: Since the introduction of uncemented hip implants, there has been a search for the best surface coating to enhance bone apposition in order to improve retention. The surface coating of the different stems varies ... -
The association between preoperative MRI findings and clinical improvement in patients included in the NORDSTEN spinal stenosis trial
Aaen, Jørn Ståle; Banitalebi, Hasan; Austevoll, Ivar Magne; Hellum, Christian; Storheim, Kjersti; Myklebust, Tor Åge; Anvar, Masoud D; Weber, Clemens; Solberg, Tore; Grundnes, Oliver; Brisby, Helena; Indrekvam, Kari; Hermansen, Erland (Journal article; Peer reviewed, 2022)Purpose To investigate potential associations between preoperative MRI findings and patient reported outcome measures (PROMs) after surgery for lumbar spinal stenosis (LSS). Methods The NORDSTEN trial included 437 ... -
Can bone apposition predict the retention force of a femoral stem? An experimental weight-bearing hip-implant model in goats
Harboe, Knut; Ellingsen, Christian Lycke; Sudmann, Einar; Gjerdet, Nils Roar; Søreide, Kjetil; Indrekvam, Kari (Peer reviewed; Journal article, 2015-04-28)Background: The increasing incidence of prosthesis revision surgery in the Western world has led to an increased focus on the capacity for stem removal. We previously reported on a femoral stem implanted in goats with an ... -
Clinical and MRI findings in lumbar spinal stenosis: baseline data from the NORDSTEN study
Aaen, Jørn; Austevoll, Ivar Magne; Hellum, Christian; Storheim, Kjersti; Myklebust, Tor Åge; Banitalebi, Hasan; Anvar, Masoud; Brox, Jens Ivar; Weber, Clemens; Solberg, Tore; Grundnes, Oliver; Brisby, Helena; Indrekvam, Kari; Hermansen, Erland (Journal article; Peer reviewed, 2021)Purpose: The aim was to describe magnetic resonance imaging findings in patients planned for lumbar spinal stenosis surgery. Further, to describe possible associations between MRI findings and patient characteristics with ... -
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 ... -
Comparative effectiveness of microdecompression alone vs decompression plus instrumented fusion in lumbar degenerative spondylolisthesis
Austevoll, Ivar Magne; Gjestad, Rolf; Solberg, Tore; Storheim, Kjersti; Brox, Jens Ivar; Hermansen, Erland; Rekeland, Frode; Indrekvam, Kari; Hellum, Christian (Journal article; Peer reviewed, 2020)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 ... -
Comparison of 3 Different Minimally Invasive Surgical Techniques for Lumbar Spinal Stenosis: A Randomized Clinical Trial
Hermansen, Erland; Austevoll, Ivar Magne; Hellum, Christian; Storheim, Kjersti; Myklebust, Tor Åge; Aaen, Jørn Ståle; Banitalebi, Hasan; Anvar, Masoud D; Rekeland, Frode; Brox, Jens Ivar; Franssen, Eric; Weber, Clemens; Solberg, Tore; Furunes, Håvard; Grundnes, Oliver; Brisby, Helena; Indrekvam, Kari (Journal article; Peer reviewed, 2022)Importance: Operations for lumbar spinal stenosis is the most often performed surgical procedure in the adult lumbar spine. This study reports the clinical outcome of the 3 most commonly used minimally invasive posterior ... -
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 ... -
Decompression with or without Fusion in Degenerative Lumbar Spondylolisthesis
Austevoll, Ivar Magne; Hermansen, Erland; Fagerland, Morten Wang; Storheim, Kjersti; Brox, Jens Ivar; Solberg, Tore; Rekeland, Frode; Franssen, Eric; Weber, Clemens; Brisby, Helena; Grundnes, Oliver; Algaard, Knut; Bøker, Tordis; Banitalebi, Hasan; Indrekvam, Kari; Hellum, Christian (Journal article; Peer reviewed, 2021)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 ... -
Development of an internet-delivered cognitive behavioral therapy program for use in combination with exercise therapy and education by patients at increased risk of chronic pain following total knee arthroplasty
Rognsvåg, Turid; Lindberg, Maren Falch; Lerdal, Anners; Stubberud, Jan Egil; Furnes, Ove Nord; Holm, Inger; Indrekvam, Kari; Lau, Bjørn; Rudsengen, Daniil; Skou, Søren Thorgaard; Badawy, Mona (Journal article; Peer reviewed, 2021)Background Approximately 20% of patients experience chronic pain after total knee arthroplasty (TKA). Due to the growing number of TKA procedures, this will affect an increasing number of people worldwide. Catastrophic ... -
The efectiveness of exercise therapy and education plus cognitive behavioral therapy, alone or in combination with total knee arthroplasty in patients with knee osteoarthritis – study protocol for the MultiKnee trial
Lindberg, Maren Falch; Aamodt, Arild; Badawy, Mona; Bergvad, Ingvild Buset; Borchgrevink, Petter Chr.; Furnes, Ove Nord; Gay, Caryl; Heir, Stig; Holm, Inger; Indrekvam, Kari; Kise, Nina Jullum; Lau, Bjørn; Magnussen, Jon; Nerhus, Tor Kjetil; Rognsvåg, Turid; Rudsengen, Daniil; Rustøen, Tone; Skou, Søren Thorgaard; Stubberud, Jan Egil; Småstuen, Milada Cvancarova; Lerdal, Anners (Journal article; Peer reviewed, 2021)Background One in five patients report chronic pain following total knee arthroplasty (TKA) and are considered non-improvers. Psychological interventions such as cognitive behavioral therapy (CBT), combined with exercise ... -
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 ... -
Higher revision risk for unicompartmental knee arthroplasty in low-volume hospitals
Badawy, Mona; Espehaug, Birgitte; Indrekvam, Kari; Havelin, Leif Ivar; Furnes, Ove (Peer reviewed; Journal article, 2014)Background and purpose — Some studies have found high complication rates and others have found low complication rates after unicompartmental knee arthroplasty (UKA). We evaluated whether hospital procedure volume influences ... -
Hospital volume and the risk of revision in Oxford unicompartmental knee arthroplasty in the Nordic countries -an observational study of 14,496 cases
Badawy, Mona; Fenstad, Anne Marie; Bartz-Johannessen, Christoffer; Indrekvam, Kari; Havelin, Leif Ivar; Robertsson, Otto; W-Dahl, Annette; Eskelinen, Antti; Mäkelä, Keijo; Pedersen, Alma B.; Schrøder, Henrik M.; Furnes, Ove (Peer reviewed; Journal article, 2017-09-07)Background High procedure volume and dedication to unicompartmental knee arthroplasty (UKA) has been suggested to improve revision rates. This study aimed to quantify the annual hospital volume effect on revision risk in ... -
Influence of Hospital Volume on Revision Rate After Total Knee Arthroplasty with Cement
Badawy, Mona; Espehaug, Birgitte; Indrekvam, Kari; Engesæter, Lars B.; Havelin, Leif Ivar; Furnes, Ove (Peer reviewed; Journal article, 2013)Background: The number of total knee replacements has substantially increased worldwide over the past ten years. Several studies have indicated a correlation between high hospital procedure volume and decreased morbidity ... -
Is the presence of foraminal stenosis associated with outcome in lumbar spinal stenosis patients treated with posterior microsurgical decompression
Aaen, Jørn Ståle; BANITALEBI, HASAN; Austevoll, Ivar Magne; Hellum, Christian; Storheim, Kjersti; Myklebust, Tor Åge; Anvar, Masoud D; Weber, Clemens; Solberg, Tore; Grundnes, Oliver; Brisby, Helena; Indrekvam, Kari; Hermansen, Erland (Journal article; Peer reviewed, 2023)Background We aim to investigate associations between preoperative radiological findings of lumbar foraminal stenosis with clinical outcomes after posterior microsurgical decompression in patients with predominantly central ... -
Metallionenivåer i blod fra pasienter med metall-mot-metall-hofteprotese
Høl, Paul Johan; Hallan, Geir; Indrekvam, Kari (Journal article; Peer reviewed, 2021)Bakgrunn: BHR-protese (Birmingham hip resurfacing) er satt inn i hoften til 445 personer i Norge. Bivirkninger av metallfrigjøring fra metall-mot-metall-leddflater av kobolt-krom-legering kan forekomme. Målet med studien ... -
The Norwegian degenerative spondylolisthesis and spinal stenosis (NORDSTEN) study: study overview, organization structure and study population
Indrekvam, Kari; Bånerud, Ingrid Fjeldheim; Hermansen, Erland; Austevoll, Ivar Magne; Rekeland, Frode Gurvin; Guddal, Maren Hjelle; Solberg, Tore; Brox, Jens Ivar; Hellum, Christian; Storheim, Kjersti (Journal article; Peer reviewed, 2023)Purpose To provide an overview of the The Norwegian Degenerative spondylolisthesis and spinal stenosis (NORDSTEN)-study and the organizational structure, and to evaluate the study population. Methods The NORDSTEN is ... -
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
Aaen, Jørn Ståle; Storheim, Kjersti; Negård, Anne; Myklebust, Tor Åge; Grotle, Margreth; Hellum, Christian; Espeland, Ansgar; Anvar, Masoud D; Indrekvam, Kari; Weber, Clemens; Brox, Jens Ivar; Brisby, Helena; Hermansen, Erland; Banitalebi, Hasan (Journal article; Peer reviewed, 2022)Background Fatty infiltration of the paraspinal muscles may play a role in pain and disability in lumbar spinal stenosis. We assessed the reliability and association with clinical symptoms of a method for assessing fatty ...