A recent study suggests that pulsed electrical stimulation (PES) may not improve mild-to-moderate symptoms of knee arthritis. During PES, a low electrical pulse is applied to the affected joint.
In the study, 70 adults with mild-to-moderate knee arthritis were randomly assigned to either PES or placebo for 26 weeks. The researcher did not use Bionicare®, which is the PES device that has been approved for the treatment of knee osteoarthritis. Instead, a transcutaneous electrical nerve stimulation (TENS) device was altered to replicate a PES product.
The primary outcome measure was pain, which was rated using a visual analogue scale. The researcher also used the standardized Western Ontario and McMaster Universities (WOMAC) scale to assess joint pain, joint function, joint stiffness and quality of life. Other measurements included physical activity and perceived benefit.
By the end of the study, the researcher found that both groups experienced significant improvements in pain, but the improvements were similar between the groups.
The results are limited by the small sample size and the use of an altered TENS device. More research is needed.
For more information about arthritis, please visit Natural Standard's Medical Conditions database.
References
1.Fary RE. The effectiveness of pulsed electrical stimulation in the management of osteoarthritis of the knee: Results of a randomized controlled trial. Arthritis Rheum. 2011 Feb 10. doi: 10.1002/art.30258. View Abstract
2.Natural Standard: The Authority on Integrative Medicine. www.naturalstandard.com
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