Transcutaneous nerve stimulation in rheumatoid arthritis.
This study of the effects of transcutaneous nerve stimulation (TNS) on 20 wrists of 11 men with rheumatoid arthritis was designd to make an objective assessment of pain and also to evaluate placebo effects. Following determinations of the length of time each wrist could support a small weight before pain began or increased (loading time), a 3-part test was conducted using the same weight in each case. (1) Each wrist was treated by TNS for 15 minutes and then, with the stimulator still on, loading time was determined (TNS-1). (2) With the stimulator working on the same wrist as for TNS-1, the loading time of the opposite wrist was determined (TNS-2). (3) To study placebo effect, loading time was again determined with the same adjustment on the stimulator but with the battery removed (TNS-3). If the loading time doubled or more, the pain relief was considered to be 100%. From the results (70% of the TNS-1 wrists had 50 to 100% pain relief; 10% of the TNS-2 and 15% of the TNS-3 wrists had some improvement), TNS appears to reduce joint pain and to offer a supplement to antiinflammatory drugs.[1]References
- Transcutaneous nerve stimulation in rheumatoid arthritis. Kumar, V.N., Redford, J.B. Archives of physical medicine and rehabilitation. (1982) [Pubmed]
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