How to Reduce Swelling After a Sprained Ankle
May 30, 2022
Source: Cainiu Health
Dr. Xu Ge
Introduction
Ice application should be prioritized. Cold therapy offers two primary benefits: first, it helps reduce bleeding and alleviate swelling to some extent; second, the low temperature induces local numbness around the injured area, thereby providing analgesic effects. If available, a compression bandage can be applied in conjunction with icing—this serves both to control bleeding and to limit accumulation of interstitial fluid within tissue spaces, effectively preventing or minimizing swelling.
Cold therapy (ice application) is the first-line treatment. Cold application offers two primary benefits: first, it helps reduce bleeding and alleviate swelling to some extent; second, the low temperature induces local numbness around the injured area, thereby providing analgesic effects. Ice packs, crushed ice, frozen popsicles, or ice cubes may all be used for cold therapy. Apply for 15–20 minutes per session, every 2–3 hours—or even hourly—as needed. Take care to avoid frostbite.
Heat therapy is strictly contraindicated, as it causes vasodilation of small blood vessels at the injury site, exacerbating hemorrhage and increasing tissue fluid exudation—thereby worsening swelling.
Not only should heat therapy be avoided, but topical medications promoting blood circulation—such as safflower oil, Zhenggu Shui (orthopedic liniment), Huoluo Oil (circulation-enhancing oil), or Yunnan Baiyao—should also be avoided. The underlying principle is identical: following soft-tissue injury, the microvascular network is disrupted, resulting in bleeding and fluid exudation. Inflammatory mediators present in the blood further infiltrate surrounding tissues, triggering an inflammatory response and amplifying exudation—thus intensifying erythema, swelling, heat, and pain. Applying circulatory-stimulating agents at this stage would be akin to “pouring oil on the fire.”
If available, an elastic bandage may be applied to exert gentle compression over the injured area. This serves two purposes: controlling hemorrhage and limiting accumulation of excess interstitial fluid—both of which are highly effective in preventing or reducing swelling.
