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4-6 weeks: A very bad sprained finger can take up to 4-6 weeks to heal. If your finger still hurts a lot after 2 weeks, go see your doc to check for possible stress fracture. Each week you should feel better, be able to move your finger more. If your finger stops improving or gets worse, you should see your doc.
He or she may recommend a splint to protect the area while it heals. After about 24 to 48 hours, your doctor may recommend that you soak your finger daily in a solution of warm water and peroxide or betadine. After 48 hours, range-of-motion finger exercises may be started.Complete healing usually takes 3 to 5 weeks.Larger tissue injury.f the wound is left to heal itself, the new skin around the wound may not be strong enough. In these cases, surgery is often required to ensure healing. During surgery, a piece of skin (skin graft) is taken from another site, such as the palm of your hand, and used to cover the injury.