Depth of penetration for cryotherapy is typically which range?

• A. 0.5-1 cm
• B. 2-3 cm
• C. 3-5 cm
• D. 5-6 cm

Answer: (A)

Cryotherapy mainly cools superficial tissues. The typical depth reached is relatively shallow—roughly half a centimeter to one centimeter beneath the skin. This happens because cooling from a cold source (like a cold pack or ice massage) conducts heat into the nearby tissues, but the gradient and tissue properties limit how far the cold travels before the deeper tissues stay warmer. Clinically, this makes cryotherapy effective for reducing inflammation, pain, and metabolic demand in superficial structures, such as skin and subcutaneous tissue, while deeper muscles and joints are not significantly affected unless much longer or more intense cooling is used, which increases risk of tissue injury.