Microwave therapy is classified as high frequency therapy. The varying frequencies of the high frequency therapy have in common that warm tissue is created under their influence.
Microwaves are applied via the so-called radiation field method. This way (depending on the usage of emitters of varying shapes and sizes) beams of electromagnetic waves are applied to the tissue. The energy from these waves will be directly absorbed in the tissue and will make it warm.
The penetration of the microwaves is inferior in comparison to shortwave. Microwave therapy is a practical preference if a local heat for musculature or linking tissue structures (like ribbons, sinews, capsules etc. ) is wanted.