Interferential therapy (IFT) uses two medium-frequency currents crossing in the tissues to produce a low-frequency therapeutic effect deep in soft tissues. It is widely used to reduce pain, decrease swelling and improve circulation. At Back To Life, IFT is applied by clinicians as part of a multimodal plan, with electrode placement and parameters individualised for each patient.
Two slightly different carrier frequencies (e.g., 4000 Hz and 4100 Hz) cross in tissues producing an amplitude-modulated beat frequency (e.g., 100 Hz). The deeper penetration and comfortable sensation make IFT useful for treating large or deep painful areas.
Acute and chronic musculoskeletal pain where analgesia is required to facilitate active rehab.
Post-injury or post-operative swelling control when combined with elevation and manual techniques.
Used selectively for muscle re-education and pain-relieved activation during rehab sessions.
Crossed-four pole technique commonly used for deeper penetration. Place electrodes around painful region avoiding bony prominences and scars. Clinician will mark and document placement for reproducibility.
IFT is generally safe when contraindications are respected. Avoid over pacemakers, implanted stimulators, over malignant tissue, across the chest in pregnancy, or over broken skin.
Clinical studies support IFT for symptomatic pain relief and edema reduction in selected conditions. It is best used as an adjunct to active rehabilitation and targeted interventions.