A sprain is an injury to the ligaments around a joint. Ligaments are strong, flexible fibers that hold bones together. When a ligament is stretched too far or tears, the joint will become painful and swell.
Sprains are caused when a joint is forced to move into an unnatural position. For example, "twisting" one's ankle causes a sprain to the ligaments around the ankle.
Symptoms of a sprain include:
First aid steps include:
Aspirin, ibuprofen, or other pain relievers can help. DO NOT give aspirin to children.
Keep pressure off the injured area until the pain goes away. Most of the time, a mild sprain will heal in 7 to 10 days. It may take several weeks for pain to go away after a bad sprain. Your health care provider may recommend crutches. Physical therapy can help you regain motion and strength of the injured area.
Go to the hospital right away or call 911 if:
Call your provider if:
The following steps may lower your risk of a sprain:
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Nakamura N, Rodeo SA, Alini M, Maher S, et al. Physiology and pathophysiology of musculoskeletal tissues. In: Miller MD, Thompson SR, eds. DeLee and Drez's Orthopaedic Sports Medicine. 4th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 1.