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Interferential current (IFC)

Introduction - Interferential current (IFC) Therapy

Interferential differs from conventional Muscular stimulation and TENS in that it delivers concentrated stimulation deep into the affected tissue.  Interferential Unit Stimulators is a low frequency treatment that exploits the interference of two separately generated sinusoidal currents applied to the body simultaneously. It is a low frequency current treatment that uses two medium frequency currents which "interfere" with each other to produce a beat frequency that the body recognizes as a low frequency energy source. The range of this frequency is usually 1Hz - 250Hz. 

Interferential electrical stimulation's is a unique way of effectively delivering therapeutic frequencies to tissue. Interferential stimulators use a fixed carrier frequency of 4,000 Hz per interferential-therapy.jpgsecond and also a second adjustable frequency of 4,000-4,200 Hz per second. When the fixed and adjustable frequencies combine (heterodyne), they produce the desired signal frequency (Interference frequency). Interferential stimulation is concentrated at the point of intersection between the electrodes. This concentration occurs deep in the tissues as well as at the surface of the skin

Interferential current (low frequency) crosses the skin with greater ease and with less stimulation of cutaneous (affecting the skin) or nociceptors (a sensory receptor that responds to pain); allowing greater patient comfort during electrical stimulation. This explains why Interferential current may be most suitable for treating patients with deep pain, for promoting osteogenesis in delayed and nonunion fractures and in pseudothrosis, for stimulating deep skeletal muscle to augment the muscle pump mechanism in venous insufficiency, and for depressing the activity of certain cervical and lumbosacral sympathetic ganglia in patients with increased arterial constrictor tone.

Physiological Effects:Excitable tissues can be stimulated by low frequency alternating currents. Although to some extent, all tissues in this category will be affected by a broad range of stimulations, it is thought (Savage 1984) that different tissues will have an optimal stimulation band, which can be estimated by the conduction velocity of the tissue, its latency and refractory period.
These are detailed below:
- Sympathetic Nerve 1-5Hz
- Parasympathetic Nerve 10-150Hz
- Motor Nerve 10-50Hz
- Sensory Nerve 90-100Hz
- Nociceptive fibres 90-150Hz 
- Smooth Muscle 0-10Hz 
 Common Use and Clinical applications:
- Pain relief
- Muscle stimulation
- Increased blood flow
- Reduction of oedema
- Post-Orthopaedic surgery
- Joint injury syndrome
- Cumulative trauma disorders

Interferential 2-Pole Unit AD-7 (Code.: N01) Call us for more Info.  

 

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