Which method utilizes electromagnetic energy to produce therapeutic heating effects?

The method that utilizes electromagnetic energy to produce therapeutic heating effects is short wave diathermy. This technique employs high-frequency electromagnetic waves to create deep tissue heating, which can increase blood flow, relieve pain, and improve tissue elasticity. The energy produced penetrates the tissues and generates heat, making it particularly effective for treating inflammatory conditions and promoting healing processes.

In contrast, deep tissue massage primarily relies on physical manipulation of the muscles and soft tissues, not electromagnetic energy. Occupational therapy focuses on helping patients achieve independence in daily activities and does not directly involve heating methods. Ultrasound therapy uses sound waves rather than electromagnetic waves to provide deep tissue heating and therapeutic effects. While ultrasound therapy also generates heat and can be used for therapeutic purposes, it operates on a different principle involving acoustic energy. Thus, short wave diathermy is the correct answer as it specifically involves electromagnetic energy to achieve its therapeutic effects.