In capacitive field diathermy, how are the electrodes placed?

In capacitive field diathermy, how are the electrodes placed?

• A. Two plate electrodes on each side of body
• B. One plate electrode on the front
• C. Electrodes wrap around limbs
• D. Electrodes on the feet only

Answer: (A)

Capacitive field diathermy heats tissue by an electric field created between two insulated plates placed on opposite sides of the body part being treated. Placing one plate on the front and the other on the back (two plates on opposing sides) allows the field to pass through the tissue, producing dielectric heating throughout the treated area. The plates are insulated to prevent direct skin contact and burns, and treatment is focused where the field spans. This is why the correct description is two plate electrodes on opposite sides of the body. The other setups—one plate on the front, wrapping electrodes around limbs, or using electrodes on the feet only—do not create the necessary bidirectional field across the tissue for capacitive heating.

Capacitive field diathermy heats tissue by an electric field created between two insulated plates placed on opposite sides of the body part being treated. Placing one plate on the front and the other on the back (two plates on opposing sides) allows the field to pass through the tissue, producing dielectric heating throughout the treated area. The plates are insulated to prevent direct skin contact and burns, and treatment is focused where the field spans.

This is why the correct description is two plate electrodes on opposite sides of the body. The other setups—one plate on the front, wrapping electrodes around limbs, or using electrodes on the feet only—do not create the necessary bidirectional field across the tissue for capacitive heating.