Which of the following is a precaution/safety guideline for ultrasound therapy?

• A. Epiphyseal plates
• B. Acute inflammation
• C. Fractures
• D. Breast implants

Answer: (A)

Focusing ultrasound safety on growth plates in growing individuals is essential. Epiphyseal plates are areas of developing bone where cartilage is turning into bone as children grow. Exposing these plates to ultrasound energy can cause unwanted heating or mechanical effects that may disturb normal bone development, potentially leading to growth disturbances or deformities. Because this safety concern is specific to the biology of developing bones and has clear lifelong implications, it stands out as the primary precaution.

In contrast, while acute inflammation is a common consideration—often prompting avoidance or adjustment of treatment to prevent worsening symptoms—it is not as universally defining a safety rule as protecting growth plates. Fractures and breast implants require their own cautions in practice, but they do not represent the single, fundamental precaution that applies across pediatric patients in the same way as growth plates do.