When treating a scar that limits hand function, which is commonly cited benefit of ultrasound therapy?

• A. Loosen scar tissue
• B. Accelerates hematoma formation
• C. Decreases scar tissue formation
• D. Reduces wound healing

Answer: (A)

When treating a hand scar that limits function, the main idea is to improve tissue pliability so the scar moves more freely with the surrounding structures. Ultrasound therapy helps accomplish this by heating the tissue, which increases collagen fiber elasticity and tissue extensibility. That makes the scar less stiff and more compliant, allowing better glide between layers and easier stretching of the surrounding tissues. This improved pliability, often paired with scar massage and targeted ROM exercises, can translate into improved hand function. Non-thermal effects of ultrasound may also support tissue remodeling at the cellular level, aiding collagen realignment over time.

The other options don’t fit typical goals: accelerating hematoma formation would harm healing, and reducing wound healing or decreasing scar formation isn’t the purpose of ultrasound in this context. The aim is to soften and loosen the scar to improve function, not to impede healing.