Figure 2.

Multiple sessions of 100 Hz TENS with twice-a-week schedule reduce joint swelling in the acute period of rat monoarthritis induced by intra-articular injection of CFA at the right ankle. TENS was administered with medium intensity of stimulation (1-2-3 mA), beginning at 24 h after the injection of CFA (shown by arrows on the horizontal bar). For control group, TENS skin electrodes were placed on the same regions of skin but no current was delivered. **P < 0.01 (two-way ANOVA between two curves from the first week to the fourth week).