In hip osteoarthritis, ultrasound therapy is recommended with which dose and region coverage?

In hip osteoarthritis, ultrasound therapy is recommended with which dose and region coverage?

• A. 1 MHz at 1 W/cm2 for 5 minutes each to anterior, lateral, and posterior hip
• B. 3 MHz at 0.5 W/cm2 for 10 minutes to the hip joint
• C. 1 MHz at 2 W/cm2 for 3 minutes to medial hip
• D. 3 MHz at 1 W/cm2 for 10 minutes to entire hip region

Answer: (A)

For hip osteoarthritis, you want ultrasound that heats deeper tissues and covers the whole hip region. Using 1 MHz allows energy to reach the hip joint and surrounding capsule, which are relatively deep structures. A moderate intensity of about 1 W/cm2 provides enough heating to promote tissue extensibility and pain modulation without risking excessive heating on a large joint. Treating multiple regions—the anterior, lateral, and posterior aspects—ensures the entire hip area is covered, rather than focusing on a single spot, which helps address the joint and surrounding soft tissues comprehensively. A duration of around 5 minutes per region is typical for achieving therapeutic heating without overdoing it. The other options are less effective because 3 MHz delivers energy too shallow for the deep hip joint, 0.5 W/cm2 may be insufficient for meaningful heating in OA, targeting only the medial hip misses other important areas, and treating the entire hip with a shallow frequency still wouldn’t consistently reach the joint depth or energy distribution needed.

For hip osteoarthritis, you want ultrasound that heats deeper tissues and covers the whole hip region. Using 1 MHz allows energy to reach the hip joint and surrounding capsule, which are relatively deep structures. A moderate intensity of about 1 W/cm2 provides enough heating to promote tissue extensibility and pain modulation without risking excessive heating on a large joint. Treating multiple regions—the anterior, lateral, and posterior aspects—ensures the entire hip area is covered, rather than focusing on a single spot, which helps address the joint and surrounding soft tissues comprehensively. A duration of around 5 minutes per region is typical for achieving therapeutic heating without overdoing it.

The other options are less effective because 3 MHz delivers energy too shallow for the deep hip joint, 0.5 W/cm2 may be insufficient for meaningful heating in OA, targeting only the medial hip misses other important areas, and treating the entire hip with a shallow frequency still wouldn’t consistently reach the joint depth or energy distribution needed.