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Efficacy and safety of plant-derived products for the treatment of osteoarthritis

Citation

Laslett, LL and Jin, X and Jones, G, Efficacy and safety of plant-derived products for the treatment of osteoarthritis, Botanics: Targets and Therapy, 5 pp. 1-20. ISSN 1179-9897 (2015) [Refereed Article]


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Copyright Statement

© 2015 Laslett et al.

DOI: doi:10.2147/BTAT.S33431

Abstract

Background: Plant-derived therapies are traditionally used as medicines, but they have generally not been studied with the same rigor as pharmaceutical agents. This review summarizes the use of plant-derived products for osteoarthritis.

Methods: Sixty-three identified trials were summarized for pain, function, and safety outcomes using standardized mean differences (SMDs) and relative risks.

Results: Plant-derived therapies are effective for treating pain compared to placebo, as assessed using visual analog scores and numerical rating scales (SMD, 1.08; 95% confidence interval [CI]: 0.72–1.44), or Western Ontario and McMaster University Osteoarthritis Index (WOMAC)/Knee injury and Osteoarthritis Outcome Score (KOOS) pain scales (SMD, 0.98; 95% CI: 0.62–1.35). Classes demonstrating overall efficacy in more than one trial for either visual analog scores or WOMAC pain included Boswellia serrata, capsaicin, and ginger; there was single-trial evidence of the efficacy of another nine agents. Plant-derived therapies have similar efficacy to an active comparator (SMD, 0.32; P = 0.08; -0.08; P = 0.14). Therapies are also effective for functional outcomes compared to placebo (SMD, 0.92; P = < 0.001). However, significant heterogeneity remains for all pain and function outcomes, indicating that the results need to be interpreted with caution. Risk of adverse events was similar to placebo (relative risk = 1.13; P = 0.1), but reduced compared to an active comparator (relative risk, 0.75; P < 0.001).

Conclusion: Plant-derived therapies may be efficacious in treating osteoarthritic pain and functional limitations, and they appear to be safer than other active therapies. However, quality trials and long-term data are lacking, and the number of trials for each therapy is limited. Comparisons would be assisted by trial standardization.

Item Details

Item Type:Refereed Article
Keywords:phytotherapy, plant extract, herbal, review, meta-analysis, osteoarthritis
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Rheumatology and Arthritis
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Skeletal System and Disorders (incl. Arthritis)
Author:Laslett, LL (Dr Laura Laslett)
Author:Jin, X (Mr Xingzhong Jin)
Author:Jones, G (Professor Graeme Jones)
ID Code:97443
Year Published:2015
Funding Support:National Health and Medical Research Council (1070586)
Deposited By:Menzies Institute for Medical Research
Deposited On:2014-12-17
Last Modified:2016-02-18
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