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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:
- Apply ice right away to reduce swelling. Wrap the ice in cloth. Do not place ice directly on the skin.
- Wrap a bandage around the affected area to limit movement. Wrap firmly, but not tightly. Use a splint if needed.
- Keep the swollen joint raised above your heart, even while sleeping.
- Rest the affected joint for several days.
- Avoid putting stress on the joint because it can make the injury worse. A sling for the arm, or crutches or a brace for the leg can protect the injury.
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.
When to Contact a Medical Professional
Go to the hospital right away or call 911 if:
- You think you have a broken bone.
- The joint appears out of position.
- You have a serious injury or severe pain.
- You hear a popping sound and have immediate problems using the joint.
Call your provider if:
- Swelling does not start to go away within 2 days.
- You have symptoms of infection, including red, warm, painful skin or a fever over 100°F (38°C).
- The pain does not go away after several weeks.
The following steps may lower your risk of a sprain:
- Wear protective footwear during activities that place stress on your ankle and other joints.
- Make sure that shoes fit your feet properly.
- Avoid high-heeled shoes.
- Always warm-up and stretch before doing exercise and sports.
- Avoid sports and activities for which you have not trained.
Biundo JJ. Bursitis, tendinitis, and other periarticular disorders and sports medicine. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 263.
Wang D, Eliasberg CD, Rodeo SA. Physiology and pathophysiology of musculoskeletal tissues. In: Miller MD, Thompson SR. eds. DeLee, Drez, & Miller's Orthopaedic Sports Medicine. 5th ed. Philadelphia, PA: Elsevier; 2020:chap 1.