HF Diathermy


High-frequency heat therapy permits surface warming as well as the precise warming of in-depth tissue regions. This physio-therapeutic method is particularly suitable for the treatment of subacute and chronic rheumatoid diseases of the joints and muscles, circulatory diseases and for the treatment of numerous unspecific, subacute and chronic disease processes of internal organs as well as in deseases where heat therapy is indicated.

Acute inflammatory processes should either not be treated at all (i.e. acute rheumatoid arthritis) or only with very low dosages. The use of impulse mode is useful since they have the advantage of being able to considerably lower the heat irritation in the tissue. Therefore, an extension of the indication to include acute disease processes seems reasonable.


  1. The dipole molecules are initially randomly organized in the body.
  2. Under the influence of an electric field, they turn according to their electrical charge in the direction of the field lines. The positively charged particles of the dipole turn toward the (respective) negative pole and the negatively charged particles arrange themselves towards the (respective) positive pole. Since the electrical field changes its polarity, the molecules are constantly in motion causing micro-heating.

Relative Heating:

Comparison of characteristic temperature curves of various
HF-heat therapy techniques after a short application in continuous mode.

Heat distribution during shortwave and microwave therapy:

1. Ultratherm®

Shortwave condenser field. The body part between the two plate electrodes
is completely permeated. In-depthe effect with heating of fatty tissue.

2. Ultratherm®

Shortwave coil field
(MINODE®, MONODE®, and DIPLODE®). Depth of penetration and heat
distribution are limited to fluid-rich tissue regions close to the body.
More superficial heating effect with sparing of fatty tissue.

3. Radiotherm®

Microwaves. Heat distribution is iemited to fluid-rich tissue close to the body surface. Superficial heating effect with sparing of the fatty tissue.

The effects of high-frequency heat therapy:


  • Increased cell metabolism
  • Acceleration of chemical reactions
  • Analgesia
  • Changes in cell membrane potentials
  • Spasmolysis
  • Increase in leucocytes
  • Increased phagocytosis
  • Decrease in bacterial virulence
  • Improved metabolism of drugs
  • Activation of endocrine glands
  • Normalization of vegetative dysregulations


The new standard in short-wave therapy.

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Radiotherm® 1006

The microwave device for radiation thermotherapy.

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