For plantar fasciitis, which type of ultrasound intensity is typically used according to clinical guidelines?

For plantar fasciitis, which type of ultrasound intensity is typically used according to clinical guidelines?

• A. Pulsed ultrasound
• B. Thermal ultrasound
• C. Non-thermal ultrasound
• D. Continuous ultrasound

Answer: (C)

Non-thermal ultrasound is used for plantar fasciitis because its benefits come from mechanical and cellular effects rather than heating tissue. When ultrasound is delivered in a pulsed mode with a low duty cycle, it produces non-thermal mechanisms such as cavitation and microstreaming that can enhance cell membrane permeability, promote collagen synthesis, and accelerate tissue healing while keeping tissue temperature from rising. This helps reduce inflammation and support repair in the inflamed plantar fascia without the discomfort or risk of overheating that can come with continuous (thermal) ultrasound. In contrast, continuous ultrasound increases tissue temperature and is less likely to be the preferred approach for acute plantar fasciitis, where non-thermal effects are more beneficial.

Non-thermal ultrasound is used for plantar fasciitis because its benefits come from mechanical and cellular effects rather than heating tissue. When ultrasound is delivered in a pulsed mode with a low duty cycle, it produces non-thermal mechanisms such as cavitation and microstreaming that can enhance cell membrane permeability, promote collagen synthesis, and accelerate tissue healing while keeping tissue temperature from rising. This helps reduce inflammation and support repair in the inflamed plantar fascia without the discomfort or risk of overheating that can come with continuous (thermal) ultrasound. In contrast, continuous ultrasound increases tissue temperature and is less likely to be the preferred approach for acute plantar fasciitis, where non-thermal effects are more beneficial.