For edema control after an ankle sprain, which approach is commonly used?

• A. Cryotherapy alone
• B. Cryotherapy with compression; IPC if indicated
• C. Elevation only
• D. Active warm exercises

Answer: (B)

Edema control after an ankle sprain hinges on limiting ongoing fluid leakage and promoting drainage away from the joint. Cryotherapy helps by cooling the tissue, reducing metabolic rate, and constricting blood vessels, which slows swelling and pain. But cooling alone isn’t enough to move the fluid out of the area. Adding compression increases external pressure, which raises interstitial pressure and reduces filtration while enhancing venous and lymphatic return to push edema out of the swollen region. If indicated, intermittent pneumatic compression can provide additional, rhythmic driving force to boost drainage, especially when swelling is pronounced or not responding to simple compression.

Elevation assists drainage by gravity, but it’s most effective when combined with cold and compression rather than used alone. Warmth or active exercise in the acute phase increases blood flow and can worsen swelling, though later in rehab gentle movement and heat may be beneficial once edema has subsided. Overall, the combination of cryotherapy with compression—and IPC if indicated—offers the most effective approach to edema control after an ankle sprain.