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Prolotherapy Injections, Saline Injections, and Exercises for Chronic Low-Back Pain: A Randomized Trial

Yelland, Michael J. FRACGP, FAFMM*; Glasziou, Paul P. PhD, FRACGP*; Bogduk, Nikolai MD, DSc; Schluter, Philip J. BSc(Hons), PhD*; McKernon, Mary RN, Grad Dip Nurs Admin*

doi: 10.1097/01.BRS.0000105529.07222.5B
Randomized Trial

Objectives.  To assess the efficacy of a prolotherapy injection and exercise protocol in the treatment of chronic nonspecific low back pain.

Design.  Randomized controlled trial with two-by-two factorial design, triple-blinded for injection status, and single-blinded for exercise status.

Setting.  General practice.

Participants.  One hundred ten participants with nonspecific low-back pain of average 14 years duration were randomized to have repeated prolotherapy (20% glucose/0.2% lignocaine) or normal saline injections into tender lumbo-pelvic ligaments and randomized to perform either flexion/extension exercises or normal activity over 6 months.

Main outcome measures  Pain intensity (VAS) and disability scores (Roland-Morris) at 2.5, 4, 6, 12, and 24 months.

Results.  Follow-up was achieved in 96% at 12 months and 80% at 2 years. Ligament injections, with exercises and with normal activity, resulted in significant and sustained reductions in pain and disability throughout the trial, but no attributable effect was found for prolotherapy injections over saline injections or for exercises over normal activity. At 12 months, the proportions achieving more than 50% reduction in pain from baseline by injection group were glucose-lignocaine: 0.46 versus saline: 0.36. By activity group these proportions were exercise: 0.41 versus normal activity: 0.39. Corresponding proportions for >50% reduction in disability were glucose-lignocaine: 0.42 versus saline 0.36 and exercise: 0.36 versus normal activity: 0.38. There were no between group differences in any of the above measures.

Conclusions.  In chronic nonspecific low-back pain, significant and sustained reductions in pain and disability occur with ligament injections, irrespective of the solution injected or the concurrent use of exercises.

This trial assessed the efficacy of a prolotherapy injection and exercise protocol for chronic low back pain. Significant and sustained reductions in pain and disability occurred in both intervention and control groups but without differences between groups.

*Centre for General Practice and School of Population Health, University of Queensland, Brisbane, Australia and

†Newcastle Bone and Joint Institute, University of Newcastle, Royal Newcastle Hospital, Australia.

Acknowledgment date: January 22, 2003.

Acceptance date: April 28, 2003.

The legal regulatory status of the device(s)/drug(s) that is/are the subject of this article is not applicable in the authors’ country.

Federal, Foundation, and Professional Organization funds were received to support this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this article.

Address correspondence and reprint requests to Michael Yelland, Inala Health Centre General Practice, 64 Wirraway Pde, Inala, Brisbane, Queensland, Q 4077, Australia. E-mail: myelland@bigpond.com

© 2004 Lippincott Williams & Wilkins, Inc.