Effects of acupuncture and placebo TENS in addition to exercise in treatment of rotator cuff tendinitis

Autor: Razavi M., Jansen G.B.

OBJECTIVE: To compare the effect of acupuncture with placebo transcutaneous electrical nerve stimulation (TENS) when added to the exercise treatment of rotator cuff tendinitis with respect to pain, shoulder movements and function. DESIGN: Prospective alternate allocation controlled trial. SETTING: Outpatient department. PATIENTS: Thirty-three patients (12 women and 21 men) were included in the study. All had clinically diagnosed rotator cuff tendinitis. INTERVENTION: Both groups underwent a standardized training programme. Each patient received in addition either 10 treatments with acupuncture or placebo TENS, 1-2 times per week. MAIN OUTCOME MEASURES: The parameters investigated were intensity of pain (measured with visual analogue scale), active, passive as well as functional movements in the shoulder (hand in neck (HIN) and pour out of a pot (POP)). Patients were tested before treatment, after treatment and at a six-month follow-up. Medicine intake, ability to lie on the affected side and sleep disturbances were evaluated. A subjective assessment was made after the treatment and at follow-up. RESULTS: Sixteen patients had acupuncture, 17 placebo TENS. Eight patients endured pain at rest in the placebo TENS group, and 10 in the acupuncture group. After treatment both groups improved, the improvement persisted at the six-month follow-up. Both groups increased range of movement. Except for the functional test HIN in the acupuncture group, there were no differences between the groups regarding other parameters investigated directly after treatment or at six-month follow-up. CONCLUSION: There is no difference between the effect of additional acupuncture treatment and placebo TENS in the treatment of rotator cuff tendinitis

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Acupuncture versus placebo for the treatment of chronic mechanical neck pain: a randomized, controlled trial

Autor: White P., Lewith G., Prescott P., Conway J.

BACKGROUND: Despite substantial increases in its popularity and use, the efficacy of acupuncture for chronic mechanical neck pain remains unproved. OBJECTIVE: To compare acupuncture and placebo for neck pain. DESIGN: A randomized, single-blind, placebo-controlled, parallel-arm trial with 1-year follow-up. SETTING: The outpatient departments of 2 major hospitals in the United Kingdom, 1999 to 2001. PATIENTS: 135 patients 18 to 80 years of age who had chronic mechanical neck pain. Eleven patients withdrew from treatment, and 124 completed the primary end point. MEASUREMENTS: The primary outcome was pain 1 week after treatment, according to a visual analogue scale. Secondary outcomes were pain at other time points, score on the Neck Disability Index and the Short Form-36, and use of analgesic medications. INTERVENTIONS: Patients were randomly assigned to receive, over 4 weeks, 8 treatments with acupuncture or with mock transcutaneous electrical stimulation of acupuncture points using a decommissioned electroacupuncture stimulation unit. RESULTS: Both groups improved statistically from baseline, and acupuncture and placebo had similar credibility. For the primary outcome (weeks 1 to 5), a statistically significant difference in visual analogue scale score in favor of acupuncture (6.3 mm [95% CI, 1.4 to 11.3 mm]; P = 0.01) was observed between the 2 study groups, after adjustment for baseline pain and other covariates. However, this difference was not clinically significant because it demonstrated only a 12% (CI, 3% to 21%) difference between acupuncture and placebo. Secondary outcomes showed a similar pattern. LIMITATIONS: All treatments were provided by 1 practitioner. Although the control was credible, it did not mimic the process of needling. A nonintervention group was not present to control for regression to the mean. CONCLUSIONS: Acupuncture reduced neck pain and produced a statistically, but not clinically, significant effect compared with placebo. The beneficial effects of acupuncture for pain may be due to both nonspecific and specific effects.

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