Lasers in Medical Science

, Volume 4, Issue 3, pp 193–196 | Cite as

Low-power laser therapy in rheumatoid arthritis

  • Nina Palmgren
  • Grethe F. Jensen
  • Kamma Kaae
  • Marianne Windelin
  • Hans C. Colov


Thirty-five patients suffering from rheumatoid arthritis were allocated at random to treatment with either a low-power laser (3.58 J cm−2, continuous wave 820 nm) or a placebo in a 4-week, double-blind study. Eight finger joints (2nd–5th metacarpo- and proximal interphalangeal joints) of the most affected hand were treated. In the laser group the grip strength and finger flexibility improved, the swelling of the joints declined, the morning stiffness and pain decreased. The sedimentation rate and the number of leukocytes showed a fall with a significant trend. In the placebo group there were no changes in these parameters except for the registration of pain, where a significant, less than with the laser, effect was observed. Thus, low-power laser therapy, at the chosen wavelength and energy dose, appears to be effective against the classical complaints from rheumatoid arthritis.

Key words

Low-power laser Rheumatoid arthritis 


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Copyright information

© Baillière Tindall 1989

Authors and Affiliations

  • Nina Palmgren
    • 1
  • Grethe F. Jensen
    • 1
  • Kamma Kaae
    • 1
  • Marianne Windelin
    • 1
  • Hans C. Colov
    • 1
  1. 1.Departments of Rheumatology, Rehabilitation, and Gynaecology, Copenhagen County Hospital GentofteUniversity of CopenhagenDenmark

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