Figure 1From: Effectiveness of moxibustion treatment as adjunctive therapy in osteoarthritis of the knee: a randomized, double-blinded, placebo-controlled clinical trial Real and sham moxibustion pillar. The real and sham moxibustion devices appear to be identical. (A) The real device has holes at the bottom to allow heat and smoke to radiate to the acupoints. (B) The sham device has a metal membrane at its base to block the smoke and minimize the heat.Back to article page