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ABSTRACT: Background
Osteoarthritis of the knee is the most common form of arthritis. Identifying effective and safe herbal formulations that are locally available is viewed as a priority for sustainable development in a region. This study aimed to evaluate the efficacy and safety of Thai herbal formulation-6 (THF-6) in comparison with oral diclofenac in patients with moderate-to-severe osteoarthritis of the knee.Methods
This randomized, double-blind, active-controlled, noninferiority trial randomly assigned patients with osteoarthritis of the knee to receive either THF-6 or diclofenac for four weeks. The primary outcome measure was the change from baseline in knee pain as measured by a 100?mm visual analog scale (VAS). Secondary outcome measures included knee stiffness, a stair climb test, the Knee Injury and Osteoarthritis Outcome Score, and safety parameters. Outcomes were assessed on a biweekly basis. Modified intention-to-treat (MITT) and perprotocol (PP) analyses were applied.Results
A total of 200 patients were enrolled of whom 175 (87.5%) were included in the MITT analysis and 153 (76.5%) in the PP analysis. The mean change in VAS pain did not differ between the two groups, and the upper limit of the two-sided 95% confidence interval (CI) for comparison between the two groups was within the prespecified margin of 10?mm for noninferiority (MITT analysis: mean difference?=?0.86, 95% CI?=?-4.39 to 6.10, p=0.748; PP analysis: mean difference?=?1.98, 95% CI?=?-3.61 to 7.56, p=0.486). Significant improvement was observed in all the efficacy parameters in both groups. Dyspepsia was the most common adverse event: 23 patients in the THF-6 group and 28 in the diclofenac group (p=0.417).Conclusions
THF-6 offers an alternative to oral diclofenac for the short-term treatment of osteoarthritis of the knee. It was shown to be noninferior to oral diclofenac in relieving knee pain. This trial is registered with ChiCTR-IPR-15007213.
SUBMITTER: Koonrungsesomboon N
PROVIDER: S-EPMC7749772 | biostudies-literature | 2020
REPOSITORIES: biostudies-literature
Koonrungsesomboon Nut N Nopnithipat Saowaros S Teekachunhatean Supanimit S Chiranthanut Natthakarn N Sangdee Chaichan C Chansakaow Sunee S Tipduangta Pramote P Hanprasertpong Nutthiya N
Evidence-based complementary and alternative medicine : eCAM 20201209
<h4>Background</h4>Osteoarthritis of the knee is the most common form of arthritis. Identifying effective and safe herbal formulations that are locally available is viewed as a priority for sustainable development in a region. This study aimed to evaluate the efficacy and safety of Thai herbal formulation-6 (THF-6) in comparison with oral diclofenac in patients with moderate-to-severe osteoarthritis of the knee.<h4>Methods</h4>This randomized, double-blind, active-controlled, noninferiority tria ...[more]