Academic article

• Christoffer Andre Børsheim; Silje Mæland; Eirik Softeland et al. (2026). Short-term outcomes of a micro-choice-based intervention for chronic low back pain: a quasi-experimental study. (external link)
• Håkon Greve  Johannessen; Geir Hallan; Thomas Istvan Edelsvärd Kadar et al. (2025). Early cup migration and wear as predictors for later aseptic loosening: a secondary evaluation of a randomized controlled RSA trial on cemented hip arthroplasties with 18-year follow-up. (external link)
• Lars Christian Haugli Bråten; Ellina Iordanova Schistad; Ansgar Espeland et al. (2020). Association of Modic change types and their short tau inversion recovery signals with clinical characteristics : a cross sectional study of chronic low back pain patients in the AIM-study. (external link)
• Lars Christian Haugli Bråten; Mads Peder Rolfsen; Ansgar Espeland et al. (2019). Efficacy of antibiotic treatment in patients with chronic low back pain and Modic changes (the AIM study): double blind, randomised, placebo controlled, multicentre trial. (external link)
• Paul Johan Høl; Geir Hallan; Ove Nord Furnes et al. (2022). Similarly low-blood metal ion levels at 10-years follow-up of total hip arthroplasties with Oxinium, CoCrMo, and stainless steel femoral heads. Data from a randomized clinical trial. (external link)
• Magnhild Hammersland Dagestad; Nils Vetti; Lars Christian Haugli Bråten et al. (2025). Modic Change Edema in Chronic Low Back Pain Treated with Infliximab or Placebo: The BackToBasic Trial. (external link)
• Benedikt Arni Jonsson; Thomas Kadar; Leif Ivar Havelin et al. (2015). Oxinium modular femoral heads do not reduce polyethylene wear in cemented total hip arthroplasty at five years: A randomised trial of 120 hips using radiostereometric analysis. (external link)
• Thomas Kadar; Ove Furnes; Arild Aamodt et al. (2012). The influence of acetabular inclination angle on the penetration of polyethylene and migration of the acetabular component: A prospective, radiostereometric study on cemented acetabular components. (external link)
• Elisabeth Gjefsen; Lars Christian Haugli Bråten; Guro Løvik Goll et al. (2020). The effect of infliximab in patients with chronic low back pain and Modic changes (the BackToBasic study): study protocol of a randomized, double blind, placebo-controlled, multicenter trial. (external link)
• Thomas Kadar; Geir Hallan; Arild Aamodt et al. (2011). A randomized study on migration of the Spectron EF and the Charnley flanged 40 cemented femoral components using radiostereometric analysis at 2 years. (external link)
• Kjersti Storheim; Ansgar Espeland; Lars Grøvle et al. (2017). Antibiotic treatment In patients with chronic low back pain and Modic changes (the AIM study): study protocol for a randomised controlled trial.. (external link)
• Elisabeth Gjefsen; Lars Christian Haugli Bråten; Erica Ponzi et al. (2025). Efficacy of a Tumor Necrosis Factor Inhibitor in Chronic Low-Back Pain With Modic Type 1 Changes: A Randomized Controlled Trial. (external link)
• Thomas Kadar; Geir Hallan; Arild Aamodt et al. (2011). Wear and migration of highly cross-linked and conventional cemented polyethylene cups with cobalt chrome or Oxinium femoral heads: A randomized radiostereometric study of 150 patients. (external link)
• Thomas Kadar; Eva Dybvik; Geir Hallan et al. (2012). Head material influences survival of a cemented total hip prosthesis in the Norwegian Arthroplasty Register. (external link)
• Håkon Greve Johannessen; Geir Hallan; Thomas Istvan Edelsvärd Kadar et al. (2024). Polyethylene wear and cup migration of cemented total hip arthroplasty with femoral heads made of oxidized zirconium, steel, or cobalt chromium: a 10-year secondary analysis from a randomized trial using radiostereometry. (external link)

Conference poster

• Thomas Kadar; Geir Hallan; Arild Aamodt et al. (2011). A randomized study on migration of the Spectron EF and the Charnley flanged 40 cemented femoral components using radiostereometric analysis at 2 years. (external link)
• Thomas Kadar; Geir Hallan; Arild Aamodt et al. (2010). Wear of highly cross-linked and conventional ultra-high molecular weight semented polyethylene cups with oxidized zirconium (Oxinium) or Cobalt Chrome femoral heads. A randomized study of 150 hips using radiostereometric analysis. (external link)
• Håkon Greve Johannessen; Thomas Kadar; Geir Hallan et al. (2022). Polyethylene Wear In Total Hip Arthroplasty; Comparing Oxinium And CoCr Femoral Heads Using Radiostereometry With 10 Years Follow-Up. (external link)

Conference lecture

• Thomas Kadar; Geir Hallan; Arild Aamodt et al. (2010). A randomized study of the Spectron EF and the Charnley flanged 40 cemented femoral components. (external link)
• Thomas Kadar; Leif Ivar Havelin; Kari Indrekvam et al. (2011). Betydningen av sementerte koppers inklinasjonsvinkel på plastslitasje og koppmigrasjon. En prospektiv randomisert studie. (external link)
• Håkon Greve Johannessen; Thomas Kadar; Geir Hallan et al. (2021). Polyethylene wear in total hip arthroplasty; comparing Oxinium and CoCr femoral heads using radiostereometry with 10 years follow-up. (external link)
• Paul Johan Høl; Geir Hallan; Ove Nord Furnes et al. (2020). Metallionenivåer i blod etter 10 år med hofteproteser med ulike hodematerialer. (external link)

Doctoral thesis (PhD)

• Thomas Kadar (2014). Wear and Migration in Cemented Total Hip Arthroplasty. (external link)

See a complete overview of publications in NVA.