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dc.contributor.authorAndersen, Mikkel Østerheden
dc.contributor.authorFritzell, Peter
dc.contributor.authorEiskjær, Søren Peter
dc.contributor.authorLagerbäck, Tobias
dc.contributor.authorHägg, Olle
dc.contributor.authorNordvall, Dennis
dc.contributor.authorLønne, Greger
dc.contributor.authorSolberg, Tore
dc.contributor.authorJacobs, Wilco
dc.contributor.authorvan Hooff, Miranda
dc.contributor.authorGerdhem, Paul
dc.contributor.authorGehrchen, Martin
dc.identifier.citationGlobal Spine Journal. 2019, 9 (8), 850-858.en_US
dc.description.abstractAbstract 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 study was to compare the variation and outcome of surgical treatment of degenerative disc disease in the Scandinavian countries based on The International Consortium for Health Outcomes Measurement core spine data sets. Methods: Anonymized individual level data from 3 national registers were pooled into 1 database. At the time of surgery, the patient reports data on demographics, lifestyle topics, comorbidity, and data on health-related quality of life such as Oswestry Disability Index, Euro-Qol-5D, and back and leg pain scores. The surgeon records diagnosis, type of surgery performed, and complications. One-year follow-ups are obtained with questionnaires. Baseline and 1-year follow-up data were analyzed to expose any differences between the countries. Results: A total of 1893 patients were included. At 1-year follow-up, 1315 (72%) patients responded. There were statistically significant baseline differences in age, smoking, comorbidity, frequency of previous surgery and intensity of back and leg pain. Isolated fusion was the primary procedure in all the countries ranging from 84% in Denmark to 76% in Sweden. There was clinically relevant improvement in all outcome measures except leg pain. Conclusions: In homogenous populations with similar health care systems the treatment traditions can vary considerably. Despite variations in preoperative variables, patient reported outcomes improve significantly and clinically relevant with surgical treatment.en_US
dc.description.sponsorshipThe author(s) received no financial support for the research, authorship, and/or publication of this article.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.subjectdegenerative disc disease;en_US
dc.subjectlumbar interbody fusion,en_US
dc.subjectdisc replacementen_US
dc.titleSurgical Treatment of Degenerative Disk Disease in Three Scandinavian Countries: An International Register Study Based on Three Merged National Spine Registersen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© The Author(s) 2019. Creative Commons Non Commercial No Derivs CC BY-NC-ND: This article is distributed under the terms of the Creative Commons Attribution-Non Commercial-NoDerivs 4.0 License ( which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (
dc.source.journalGlobal Spine Journalen_US
cristin.unitnameDiv Lillehammer

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