Which statement best reflects the overall effect of diathermy and radiation described in the material?

• A. They promote wound healing via increased intracellular activity
• B. They decrease cellular metabolism
• C. They always cause cooling
• D. They only affect connective tissue

Answer: (A)

Diathermy and radiation are heating modalities. By raising tissue temperature, they boost cellular metabolic activity and improve blood flow, which enhances the delivery of oxygen and nutrients needed for repair. This increase in intracellular activity supports processes essential to wound healing, such as enzyme activity, protein synthesis, and collagen deposition. That’s why the statement describing promotion of wound healing through increased intracellular activity is the best fit. These modalities do not primarily cool tissue; they heat it, and their effects are not limited to connective tissue but can influence multiple tissue types depending on exposure and tissue properties.