Objectifying Specific and Nonspecific Effects of Acupuncture: A Double-Blinded Randomised Trial in Osteoarthritis of the Knee

Figure 2

Knee flexion before and after acupuncture. The figure compares the maximum possible knee movement until further flexion was blocked by pain for classical acupuncture, semistandardised modern acupuncture, and non-specific needling. Flexion was assessed immediately prior to treatment, directly thereafter and at a recall visit after 7 days. Data display the means adjusted for Kellgren classification, prior intake of medication, and patient gender. Error bars indicate the standard error of the mean. Knee flexion is displayed in degrees according to the neutral-zero method.