The efficacy of interferential current treatment on knee osteoarthritis: A pilot randomized double-blind study comparing the effects of different carrier frequencies

Previous trials have found a significant reduction in knee pain levels and an increase in function with IFC treatment, although there is no consensus on which carrier frequencies and duration to choose for IFC treatment. In this study, we detected significant benefits for all the different carrier frequency groups but were not able to show any to be superior to the others.