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Traditional Interferential Current (IFC) or Premodulated (PREMOD) IFC for Pain Relief


IFC has been shown to be effective for treating multiple types of pain in locations throughout the body. 1,2   Both traditional IFC and PREMOD IFC can be done at sensory and motor levels. Sensory settings provide segmental pain relief that is fast-acting and lasts for several hours. Motor stimulation tends to be slower-acting, but may relieve pain for up to 8 hours via segmental and systemic pain modulation. Available options in the Omnistim® Pro and OmniVersa® electrical stimulation devices include:

  • Sensory - Indicated for acute pain or when the patient is taking opiod medications
  • Motor - Indicated for chronic pain
  • Sequential (Mixed) Pain Modulation - A combination of sensory and motor frequencies
    • Sensory Motor - Acute and Subacute pain, when motor is not well tolerated; sensory 10 min -> motor 20min
    • Motor Sensory - When weaning off pain medication, releases endorphins; 5 min twitch motor -> 15 min motor -> 10 min sensory
    • Sequential - Continually cycles through motor and sensory frequencies, every 15 seconds, reducing accomodation

     NOV TOTM 2017 - 1.PNG

      - Two channels are crossed and interference within the tissues creats a vector

      - The vector can be adjusted for degree of sweep (45oor 90o) and speed (fast = 10 seconds or 

        slow = 60 seconds)


NOV TOTM 2017 - 2.PNG

- Two medium frequencies are crossed with the machine

- A single channel with two electrodes (Image A)

- Two channels, not crossed, with four electrodes; no vector is created (Image B)

​Pain Target Area
​Large area, poorly localized
​Smaller area, more localized, along pain distribution
​Electrode Set-Up
​Quadripolar, Crossed
​Bipolar or two bipolar
​OmniStim® 500 Pro, Omnistim® FX2 Pro
- Select Pain, IFC, Cross Channels, Adjust Vector
- From Manual Mode, select IFC-PREMOD, A+B, Cross    Channels, Adjust Vector
- From Manual Mode, select IFC-PREMOD, select A, B,    or A+B, DO NOT cross channels, leave vector off
​Vector Settings
​Slow 45°, Slow 90°, Fast 45°, Fast 90°
​No Vector


  1. Rajfur J, Pasternok M, Rajfur K, Fras B, Bolach B, Dymarek R, Rosinczuk J, Halski T, Taradaj J: Efficiancy of Selected electrical Therapies on Chronic Low Back Pain: A Comparitve Clinical Pilot Study. Med Sci Monit, 2017:23:85-100.
  2. Zeng C, LI H, Yang T, Deng ZH, ZHang Y, Lei GH: Electrical Stimulation for Pain Relief in Knee Osteoarthritis: Systematic Review and Network Meta-analysis. Osteoarthritis and Cartilage, 2015;23:189-202.

More information for each piece of equipment listed can be found here:  Omnistim® 500 ProOmnistim® FX2 Pro, and OmniVersa®