Acupuncture, in combination with routine care, was associated with marked clinical improvements in patients with persistent low back pain. It has also shown improvement in primary and secondary outcomes for patients with osteoarthritis of the knee.
Witt, Claudia M, Susanne Jena, Dagmar Selim, Benno Brinkhaus, Thomas Reinhold, Katja Wruck, Bodo Liecker, Klaus Linde, Karl Wegscheider, and Stefan N Willich. Pragmatic Randomized Trial Evaluating the Clinical and Economic Effectiveness of Acupuncture for Chronic Low Back Pain. Am J Epidemiol. 2006; 164(5): 487-96. http://www.crd.york.ac.uk/crdweb/ShowRecord.asp?LinkFrom=OAI&ID=22006002356