The Journal of Japan Society for Laser Surgery and Medicine

Show abstractHide abstract

Two types of low reactive level laser treatments (LLLT) have been used to treat patients with chronic rheumatoid arthritis (RA). Acute pain-relieving effective ratio of the low power and low power density laser treatment (10-100W, 1.923-9.615W/cm2, C. W.) was over 70% and that of the high power and low power density laser treatment (1000mW, 0.57W/cm2, C.W.) was about 30%. An inverse relationship was observed on RA patients treated by low power level lasers (10-60mW) between the laser power and the effective time of irradiation. Laser power plays an important role in determining the degree of the pain-relieving effects. However, the rates of effect were not significantly different between the 60mW treated groups and the 100mW treated group. An inverse relationship was not observed on the 1000mW treated group between the rates of effect and effective time of irradiation. Laser power density plays a more important role in determining the painrelieving offects than total laser power.

View full abstract

Download PDF (696K)

Register with J-STAGE for free!