How Does Interferential Therapy Differ From the other Electromedical Devices?
The interferential stimulator minimizes impedance levels in the body by delivering medium frequency current of 4000Hz to 4150Hz. This current has the force to pass through the peripheral layer with very little stimulation of the sensory or motor nerves. This current can penetrate deep within the tissue creating physiological effects at the cellular level. The interferential unit operates on an ionization theory, capable of changing the permeability of the plasma membrane through graded potentials. These graded potentials change the electric potential difference of intracellular fluid enough to allow sodium ions (Na+) to cross the plasma membrane and active transport by activation the Na/K+ pump. The pump will begin to control the concentration gradients of sodium (NA+) and potassium (K+) ions within the interstitial fluid. This activity will directly affect the cell content and force the displaced water to exit the swollen cell which will eliminate edema. Inflammation will also be redu
