title: Acupuncture trial with indistinguishable exposures is moot.
authors: Howard
authors: H
authors: Moffet
mesh_terms: D015670:Acupuncture Therapy / Q000379:methods*; D019645:Arthroplasty, Replacement, Knee; D006801:Humans; D020370:Osteoarthritis, Knee / Q000601:surgery; D010149:Postoperative Pain / Q000517:prevention & control / Q000628:therapy*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design; D016896:Treatment Outcome