Index to Chiropractic Literature
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ID 26996
  Title Appropriateness of referrals from primary care for lumbar MRI
Journal Chiropr & Manual Ther. 2022 ;30(9):1-10
Peer Review Yes
Publication Type Article

Background: International guidelines do not recommend routine imaging, including magnetic resonance imaging (MRI), and seek to guide clinicians only to refer for imaging based on specific indications. Despite this, several studies show an increase in the use of MRI among patients with low back pain (LBP) and an imbalance between appropriate versus inappropriate use of MRI for LBP. This study aimed to investigate to what extent referrals from general practice for lumbar MRI complied with clinical guideline recommendations in a Danish setting, contributing to the understanding and approaches to lumbar MRI for all clinicians managing LBP in the primary sector.

Materials and methods: From 2014 to 2018, all referrals for lumbar MRI were included from general practitioners in the Central Denmark Region for diagnostic imaging at a public regional hospital. A modified version of the American College of Radiology Imaging Appropriateness Criteria for LBP was used to classify referrals as appropriate or inappropriate, based on the unstructured text in the GPs’ referrals. Appropriate referrals included fractures, cancer, symptoms persisting for more than 6 weeks of non-surgical treatment, previous surgery, candidate for surgery or suspicion of cauda equina. Inappropriate referrals were sub-classified as lacking information about previous non-surgical treatment and duration.

Results: Of the 3772 retrieved referrals for MRI of the lumbar spine, 55% were selected and a total of 2051 referrals were categorised. Approximately one quarter (24.5%) were categorised as appropriate, and 75.5% were deemed inappropriate. 51% of the inappropriate referrals lacked information about previous non-surgical treatment, and 49% had no information about the duration of non-surgical treatment. Apart from minor yearly fluctuations, there was no change in the distribution of appropriate and inappropriate MRI referrals from 2014 to 2018.

Conclusion: The majority of lumbar MRI referrals (75.5%) from general practitioners for lumbar MRI did not fulfil the ACR Imaging Appropriateness Criteria for LBP based on the unstructured text of their referrals. There is a need for referrers to include all guideline-relevant information in referrals for imaging. More research is needed to determine whether this is due to patients not fulfilling guideline recommendations or simply the content of the referrals.

Author keywords: Low back pain - MRI - Imaging appropriateness

Author affiliations: SBK, TSJ: Department of Diagnostic Imaging, Silkeborg Regional Hospital, Silkeborg, Denmark; TSJ, CBH, CHW, ER, RC, RKJ: Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; TSJ, RKJ: Chiropractic Knowledge Hub, Odense, Denmark; NR: DEFACTUM, Central Denmark Region, Aarhus, Denmark; JNLT: Center for General Practice, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.

Corresponding author: Susanne Brogaard Krogh:

This abstract is reproduced with the permission of the publisher; click on the above link for free full text.  Online access only. PubMed Record


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