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Øystein P. Nygaard
Researcher at Norwegian University of Science and Technology
Publications - 103
Citations - 4086
Øystein P. Nygaard is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Oswestry Disability Index & Lumbar spinal stenosis. The author has an hindex of 31, co-authored 90 publications receiving 3517 citations. Previous affiliations of Øystein P. Nygaard include Harvard University & Northern Norway Regional Health Authority.
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Journal ArticleDOI
Randomized clinical trial of lumbar instrumented fusion and cognitive intervention and exercises in patients with chronic low back pain and disc degeneration
Jens Ivar Brox,Roger Sørensen,Astrid Friis,Øystein P. Nygaard,Aage Indahl,Anne Keller,Tor Ingebrigtsen,Hege R. Eriksen,Inger Holm,Anne Kathrine Koller,Rolf Riise,Olav Reikerås +11 more
TL;DR: The main outcome measure showed equal improvement in patients with chronic low back pain and disc degeneration randomized to cognitive intervention and exercises, or lumbar fusion.
Journal ArticleDOI
Lumbar instrumented fusion compared with cognitive intervention and exercises in patients with chronic back pain after previous surgery for disc herniation: a prospective randomized controlled study.
Jens Ivar Brox,Olav Reikerås,Øystein P. Nygaard,Roger Sørensen,Aage Indahl,Inger Holm,Anne Keller,Tor Ingebrigtsen,Oliver Grundnes,Johan Emil Lange,Astrid Friis +10 more
TL;DR: For patients with chronic low back pain after previous surgery for disc herniation, lumbar fusion failed to show any benefit over cognitive intervention and exercises.
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The impact of body mass index on the prevalence of low back pain: the HUNT study.
TL;DR: This large population-based study indicates that obesity is associated with a high prevalence of low back pain, with a significantly stronger association in women.
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Health-related quality of life assessment by the EuroQol-5D can provide cost-utility data in the field of low-back surgery.
TL;DR: The results indicate that the EQ-5D is useful for estimating health state values and for monitoring outcome of patients undergoing low-back surgery, and this instrument would provide valid data for cost–utility analyses.
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Duration of leg pain as a predictor of outcome after surgery for lumbar disc herniation: a prospective cohort study with 1-year follow up.
TL;DR: Analysis of results indicates that leg pain lasting more than 8 months correlates with an unfavorable postoperative outcome in patients with lumbar disc herniation, as well as a high risk of not returning to work.