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Electrotherapy Electrophysical Agents

Interferential Therapy (IFT) Vector Sweep vs TENS Gate Control in Lumbar Radiculopathy

Topic Summary & Background: Differentiating 4-pole quadripolar vector sweep IFT (4000Hz carrier frequency) from High-Frequency TENS (100Hz, 50µs) for deep tissue segmental analgesia.

Key Discussion Questions:
  • Skin resistance reduction using 4000Hz carrier frequency vs 100Hz low frequency.
  • Beat frequency selection: 80-120Hz for acute pain vs 1-10Hz for endogenous opioid release.
  • Contraindications near cardiac pacemakers and metal implants.
Standard Clinical Consensus: Standard Electrotherapy Consensus: IFT utilizes kilohertz-range skin impedance reduction to deliver deeper penetration with comfortable sensory stimulation compared to surface TENS.
DN
Dr. Nidhi Saxena, MPT (Electro)
Electrotherapy Specialist • Just now
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