Zhiqiang Wang1, Ambrish Singh1, Graeme Jones1, Tania Winzenberg1, Changhai Ding1,2, Arvind Chopra3, Siddharth Das4, Debashish Danda5, Laura Laslett1, Benny Antony6. 1. Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, Tasmania, 7000, Australia. 2. Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, China. 3. Centre for Rheumatic Diseases, Apollo Jehangir Hospital, Pune University, Pune, India. 4. Era's University, Lucknow, India. 5. Christian Medical College, Vellore, India. 6. Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, Tasmania, 7000, Australia. Benny.EathakkattuAntony@utas.edu.au.
Abstract
PURPOSE OF THE REVIEW: Finding appropriate pharmacological options to treat osteoarthritis (OA) remain challenging. We aimed to determine the efficacy and safety of all types of turmeric extracts for the management of knee OA. RECENT FINDINGS: Sixteen RCTs of up to 16 weeks duration including 1810 adults with knee OA were included. Eleven RCTs compared the efficacy of turmeric extracts with placebo and five with active comparators (NSAIDs). The overall risk bias of included RCTs was moderate. Turmeric extracts significantly reduced knee pain (SMD - 0.82, 95% CI - 1.17 to - 0.47, I2 = 86.23%) and improved physical function (SMD - 0.75, 95% CI - 1.18 to - 0.33, I2 = 90.05%) compared to placebo but had similar effects compared to NSAIDs. BMI was the major contributor to heterogeneity in the placebo-controlled studies (explained 37.68% and 67.24%, respectively, in the models) and modified the effects of the turmeric on pain and physical function with less improvement with higher BMI (SMD 0.26 95% CI 0.04 to 0.48; SMD 0.48 95% CI 0.21 to 0.74). No significant between-group differences were reported for either biochemical markers or imaging outcomes. Turmeric extracts had 12% fewer adverse events than NSAIDs and similar rates to placebo. Turmeric extract is a safe and effective option for the symptomatic management of knee OA, compared to placebo or NSAIDs. However, current evidence from short-term studies is heterogeneous and has moderate risk of bias leading to some uncertainty about the true effect.
PURPOSE OF THE REVIEW: Finding appropriate pharmacological options to treat osteoarthritis (OA) remain challenging. We aimed to determine the efficacy and safety of all types of turmeric extracts for the management of knee OA. RECENT FINDINGS: Sixteen RCTs of up to 16 weeks duration including 1810 adults with knee OA were included. Eleven RCTs compared the efficacy of turmeric extracts with placebo and five with active comparators (NSAIDs). The overall risk bias of included RCTs was moderate. Turmeric extracts significantly reduced knee pain (SMD - 0.82, 95% CI - 1.17 to - 0.47, I2 = 86.23%) and improved physical function (SMD - 0.75, 95% CI - 1.18 to - 0.33, I2 = 90.05%) compared to placebo but had similar effects compared to NSAIDs. BMI was the major contributor to heterogeneity in the placebo-controlled studies (explained 37.68% and 67.24%, respectively, in the models) and modified the effects of the turmeric on pain and physical function with less improvement with higher BMI (SMD 0.26 95% CI 0.04 to 0.48; SMD 0.48 95% CI 0.21 to 0.74). No significant between-group differences were reported for either biochemical markers or imaging outcomes. Turmeric extracts had 12% fewer adverse events than NSAIDs and similar rates to placebo. Turmeric extract is a safe and effective option for the symptomatic management of knee OA, compared to placebo or NSAIDs. However, current evidence from short-term studies is heterogeneous and has moderate risk of bias leading to some uncertainty about the true effect.
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