Knee OA Trial Tests Diacerein

Researchers compared diacerein and placebo in a 24-week randomized study involving knee osteoarthritis with MRI-confirmed effusion-synovitis.

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Diacerein did not significantly reduce knee pain compared to placebo in patients with knee osteoarthritis and effusion-synovitis.
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The trial involved 262 adults with symptomatic knee OA, with similar reductions in pain observed in both diacerein and placebo groups.
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MRI findings showed no structural improvement; effusion-synovitis volume increased in the diacerein group but decreased in the placebo group.
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Adverse events were more common with diacerein, particularly gastrointestinal symptoms, affecting 42% of patients compared to 25% in the placebo group.
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The study's limitations included the inability to differentiate between synovial thickening and joint effusion due to non-contrast MRI.

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