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| Define diathermy | A device which induces heat in subcutaneous tissue and muscle for medical purposes through the absorption of electromagnetic energy. |
| Describe how EME produces heat in human tissues | Current flows through the conductors, EME is absorbed by the atoms of the tissues setting the electrons into higher states of energy and motion, the motion produces a kinetic energy in the tissues, the kinetic energy results in a localized production of heat, absorbed in cutaneous, subcutaneous, and underlying muscle tissue. |
| What are the therapeutic effects of SWD | Increased collagen extensibility, decreased joint stiffness, decreased pain, decreased muscle spasm, increased local blood flow, assists in the resolution of inflammatory infiltrates, edema and exudates. |
| List the inductive characteristics of SWD | Magnetic field, induction coil as an applicator, highest temperature in high electrolyte content tissue |
| List the capacitive characteristics of SWD | Electrical field, client between two capacitive plates, highest temperature in fat and superficial musculature |
| List the conditions or indications for use of SWD | Inflammation, collagen contracture |
| List the contraindications | Metal objects in or near the area to be treated, anesthetic area, obtunded patient, decreased vascular supply, hemorrhage, malignancy, developing fetus, gonads, eyes, growth zones in children |
| List the precautions | Acute rheumatoid arthritis |
| List advantages of MWD | Recommended for smaller areas, absorbed in greater quantities, heat at subcutaneius fat and bone/muscle interfaces |
| List the disadvantages of MWD | Minimal penetration, potential for increased radiation of superficial tissues, based on properties of light |
