What is the characteristic of interferential currents (IFC)?

Interferential currents (IFC) are characterized by emitting currents at two slightly different frequencies. This specific feature allows the two electrical currents to intersect, creating an interference pattern that produces a therapeutic effect within the tissue. The application of these two frequencies results in a continual modulation of the overall current amplitude, which can penetrate deeper into the tissues compared to other forms of electrical stimulation. This dual-frequency approach enhances the treatment's effectiveness in managing pain and facilitating muscle stimulation.

While a single electrical generator is typically not used in IFC since it requires two separate frequencies, low frequencies below 10 pulses per second (pps) are not representative of IFC as it usually operates at higher frequency ranges. Moreover, interferential current therapy is versatile and can be utilized for various therapeutic goals, not solely for pain management. This multifaceted application capabilities enhance its prevalence in clinical settings, making the characteristic of utilizing two slightly different frequencies the defining aspect of interferential currents.