Here is another interesting abstract from the Journal of Chinese Medicine:
“US authors have conducted a systematic review and meta-analysis of studies evaluating auricular acupuncture (AA) for pain management. Seventeen studies met their inclusion criteria. AA was found to be superior to controls in studies evaluating pain intensity for both acute and chronic pain, while studies of perioperative pain showed that AA reduced analgesic use.
(Auriculotherapy for pain management: a systematic review and meta-analysis of randomized controlled trials. J Altern Complement Med. 2010 Oct;16(10):1097-108).”