The therapeutic use of heat produced in tissues by electromagnetic radiation is called shortwave diathermy (the best method applied to large areas) which causes a temperature rise from the conversion of energy into heat as it penetrates the tissues.

How does Shortwave Diathermy work?

Shortwave diathermy heats the tissue by causing oscillations of electromagnetic energy of high frequencies. The physiologic effects of temperature occur at the site of the application and in distant tissue.

The local effects occur due to the elevated local temperature which is associated with increased local blood flow, capillary dilatation and capillary permeability. It results in higher level tissue metabolism and more rapid transfer of nutritional ingredients to the end organs and tissues. It promotes faster healing. Short wave heat increases connective tissue elasticity, reduces muscle spasm, and sedates the nerve endings to change the pain threshold.

Distant changes from the heated target location include reflex vasodilatation and reduction of muscle spasm, increase in body temperature, respiratory and pulse rates and decreased blood pressure.

Diathermy increases white blood cell concentration in the area of chronic inflammation (possibly via increased vascular supply).

Shortwave Diathermy Benefits

The use of short wave diathermy might be beneficial in such musculoskeletal conditions (in subacute or chronic state) such as arthritis and bursitis, musculoskeletal pain/spasm, sprains/strains and tendonitis.

Shortwave Diathermy Contraindications

1. Metal implants
2. Pregnancy
3. Malignancy
4. Pacemaker
5. Ischemia or atherosclerosis
6. Active bleeding
7. Open wounds, skin lesions in treatment area
8. Acute infection/fever