Which modality is commonly used for edema control in the ankle after an ankle sprain?

• A. Cryotherapy alone
• B. Compression only
• C. Heat therapy only
• D. Cryotherapy combined with compression; IPC if indicated

Answer: (D)

Controlling edema after an ankle sprain hinges on both reducing fluid buildup and helping the body move that fluid out of the injured area. Cryotherapy lowers blood flow and tissue metabolism, which slows the inflammatory swelling, while compression provides external pressure that limits fluid leakage from vessels and enhances venous return as you move or elevate the leg. When used together, these effects work synergistically to reduce swelling more effectively than either modality alone.

Intermittent pneumatic compression can be added if edema is substantial or resistant to initial measures, further promoting lymphatic and venous drainage through rhythmic, controlled compression. Heat would worsen edema, and using cryotherapy or compression alone misses the combined advantage of both reducing inflammation and actively moving fluid out of the area, which is why the combination with IPC when indicated is the preferred approach.