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Evidence versus advocacy, as related to radiofrequency denervation in the treatment of chronic low back pain and the MINT trials
  1. William L Lanier1 and
  2. Joseph M Neal2
  1. 1 Department of Anesthesiology and Perioperative Medicine, Mayo Clinic Minnesota, Rochester, Minnesota, USA
  2. 2 Department of Anesthesiology, Virginia Mason Medical Center, Seattle, Washington, USA
  1. Correspondence to Dr William L Lanier, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic Minnesota, Rochester, MN 55905, USA; lanier.william{at}


In 2017, JAMA: Journal of the American Medical Association published the results of the MINT trials, prospective research involving 681 patients, all of whom received exercise therapy for low back pain. Half of the patients were randomized to additionally receive radiofrequency denervation (RFD) treatment. 88% of patients completed the 3-month follow-up, and 77% completed the 12-month follow-up. In this context, RFD provided no added benefit over the baseline of exercise therapy. In 2018, five authors, all experts in pain medicine, published a ‘Daring Discourse’ article in the journal Regional Anesthesia and Pain Medicine (RAPM), criticizing the findings of the MINT trials. Although 3 of the 5 authors of the RAPM ‘Daring Discourse’ article reported in conflict of interest statements—as is appropriate—that they were consultants to corporations that produce RFD equipment, the authors failed to disclose that 4 of 5 are on the editorial board of RAPM and all 5 are current officers in the medical organization that owns RAPM: that is, the American Society of Regional Anesthesia and Pain Medicine. Noteworthy, there was no published response from the MINT trial investigators to the Daring Discourse criticisms, either in the aforementioned example or in downstream venues where some of the same Daring Discourse authors continued their widely disseminated criticisms of the JAMA/MINT trials report. We believe that these actions taken by the Daring Discourse authors and RAPM have unfairly tipped the scales in the evaluation and application of RFD treatment of low back pain. In our commentary, we discuss: (1) the challenges associated with using clinical trials to predict clinical efficacy, (2) appropriate and inappropriate uses of postpublication commentary on original research findings, (3) the use of inappropriate commentary (and related means) to alter clinical practice in the presence of contradictory research findings, and (4) potential conflicts of interest related to the authors’ and Journal’s publication of the unopposed MINT trials criticism.

  • ethics
  • Interventional Pain Management
  • radiofrequency ablation
  • chronic pain: back pain
  • Pain Outcome Measurement

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  • Editor's note The original Provenzano et al Daring Discourse referred to in this paper was accepted after 3 peer reviews in the typical fashion without preferential treatment.2 Dr Chris Wu served as Handling Editor for that paper. The Editor-In-Chief served as Handling Editor for the response letter by Maas et al and the response from Provenzano et al published herein and grouped together to provide context to the reader.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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