Figure 2From: Moxibustion for treating knee osteoarthritis: study protocol of a multicentre randomised controlled trial Moxibustion device. A photograph of the moxibustion device that will be used in this trial. This moxibustion device is a sticker-type disposable moxa, which functions for 5–10 minutes and is used for local acupuncture points. M: the upper part of the carbonised mugwort, A: adhesive sticker, H: height (2.1 cm), D: distance (1.9 cm).Back to article page